Snapshot of zapier-decisions (maximized NS1 NATS study)
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LOG.md
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# Action log
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## 2026-09-12 — maximized NS1 NATS study
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- `pct set` 510–513 to 8 cores / 16 GiB; `max_mem: 8G`; tmpfs 8G on JetStream for the ladder only.
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- Run `20260912T053120Z`. JS file 1p 128 B **7.4k → 17.4k (2.35×)**; JS memory 4p **36.4k**; ping p99 **1.38 → 0.68 ms**.
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- tmpfs unmounted after; product streams on ZFS again. Resources and max_mem **left raised**.
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- Report: `reports/ns1-maximize/`.
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## 2026-09-12 — NS1-host NATS study (second run)
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- All orchestration, nats bench, matplotlib, pandoc, and weasyprint ran on **NS1.GEORGELAMBERT.ORG** (`70.88.205.138`). Laptop not in the path.
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- Script: `verae-nats-cluster/scripts/study-on-ns1.sh` (refuses unless hostname is NS1).
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- Run `20260912T051237Z`. Report: `reports/ns1-host/nats-cluster-bench-ns1.{md,html,pdf}`.
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- Host load ~8.5. JS 1p 128 B ~7.4k durable pubs/s; ping p99 1.38 ms. Methodology + fine-tuning in that report.
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## 2026-09-12 — NATS cluster speed report
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- Bench from LXC 510 vs nats-a/b/c (`20260912T045131Z`).
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- Full write-up with charts in `reports/nats-cluster-bench.{md,html,pdf}`.
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- JetStream r=3 file ~16k durable 128 B pubs/s; ping RTT ~0.3 ms; flood queueing 150–500 ms.
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## 2026-09-12 — test env on the 3-node cluster
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- Fleet, keep, middleware, billing, and access planes `NATS_URL` → `10.10.10.21–23:4222`.
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- Streams ZAPIER_JOBS/EVENTS/WEBHOOKS/USAGE + VERAE_ARCHIVE replicas=3.
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- px-worker keep worm/tree 200 on the cluster. Backup timer enabled. Uptime loop on px-worker.
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- MOCK_VERAE still true. Zapier push still waiting on login. nkeys/mTLS not flipped (would require client creds).
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## 2026-09-12 — NATS cluster on three Proxmox LXC
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- New repo **verae-nats-cluster**: LXC 511/512/513 (`nats-a/b/c`, `10.10.10.21–23`) JetStream cluster on `vmbr1`.
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- Lab loopback `127.0.0.1:4222` unchanged until cut-over.
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- Test: stream replicas=3; same configs later move to distinct hardware.
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## 2026-09-11 — proxmox worker + deploy/monitor/backup
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- NS1 **is** Proxmox (`vmbr0` public, `vmbr1` `10.10.10.0/24`). New repo **verae-proxmox** creates LXC **510** `verae-px-worker` at `10.10.10.20`.
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- NATS for guests: socat `10.10.10.1:4222` → `127.0.0.1:4222` (never vmbr0).
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- **verae-uptime** off-box HTTPS GET; **verae-backup** tar snapshots; **verae-deploy** tagged npm ci.
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- Fleet `overlays/ns1/` checked in; `start.sh` no longer rewrites fleet/machines JSON.
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- User systemd + linger for keep and fleet.
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## 2026-09-11 — bootstrap
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- Created this repo to record decisions while executing cleanup items 1–5 (and a second pass on 2–5).
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- Assumption: single developer, lab only; breaking changes allowed.
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## Step 1 — account-balance is the prepaid source of truth
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- Persist books to `BOOKS_PATH` (atomic JSON).
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- Mutations go through `balance.adjust` / `usage.recorded`; edge cache `balanceCents` is updated from the books reply only.
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- Local cache mutate only when `NATS_URL` and `ACCOUNT_BALANCE_URL` are both unset (tests).
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## Step 2 — identity join
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- `zappier-identity` mailbox: `verae.identity.bind` / `verae.identity.lookup`.
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- Portal + middleware tenants store `veraeUserId`; JWT never public.
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## Step 3 — access planes are the public doors
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- zappier-edge binds loopback (`127.0.0.1:3000`).
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- Public: access-web `:3021`, access-api `:3022`, access-leaf `:3023`, access-zapier `:3024`, access-staff `:3025`.
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## Step 4 — leaf hardening
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- `verae-nats-accounts` holds nats.conf + subject policy.
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- Leaf token required; billing subjects denied in policy file and access-leaf.
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## Step 5 — fleet spawn
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- Prefer local machines for HTTP `spawn.command` services.
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- Disable lan-134 unless `FLEET_ENABLE_LAN134=1`.
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- SSH spawn timeout 8s; failed hosts skipped.
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## 2026-09-11 — catalog live doors
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- Bottom of https://zapier.georgelambert.org/ lists each HTTPS door with description, screenshot, and Open link.
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- UI-REVIEW.pdf includes the live-door atlas. Walkthrough §13.
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## 2026-09-11 — Caddy host names live
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- Installed `/etc/caddy/sites/zapier-services.georgelambert.org.caddy` on NS1. HTTPS: portal, api, leaf, zap, staff, iam, login, cs, sales, acct, mw, fleet.
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- Not proxied: NATS, keep, workers, loopback edge.
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## 2026-09-11 — host names
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- Mapped every running service to **NS1.GEORGELAMBERT.ORG** (`70.88.205.138`).
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- Suggested `*.zapier.georgelambert.org` names for public doors; only `zapier.georgelambert.org` (docs) and `git.georgelambert.org` exist in Caddy today.
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## 2026-09-11 — docs sync, bootstrap, NS1 all-in-one
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- Catalog and ops docs: public portal is access-web `:3021/portal/`; edge is loopback; IAM + keep listed.
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- New `verae-bootstrap` repo: clone + npm for `ns1-all-in-one`, `control-plane`, `ns1-archive`, `lan-worker`.
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- Fleet starts `staff-iam` and `staff-session`. NS1 all-in-one uses edge `:13000` because host `:3000` is taken; keep still owns archive workers. `better-sqlite3` must be rebuilt on Linux (`npm rebuild`).
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## 2026-09-11 — verae-keep on NS1
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- New repo `verae-keep`: keep `:3860` restarts crashed units; watch `:3861` restarts keep; `guard.sh` restarts watch.
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- Honors admin pause/stop via intent files + `POST /intent`. Fleet writes `data/<instance>/intent.json` (local and SSH).
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- Tested on 70.88.205.138: crash-restart, pause-hold, watch respawn. webhook-deliver brought back. NATS observed only.
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## 2026-09-11 — IAM JSON doors closed
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- CS/sales/accounting/staff JSON list and sales PUT pricing now go through IAM (401 JSON, 302 HTML).
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- Fleet service env sets `STAFF_AUTH=1` with `STAFF_IAM_URL`.
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- Re-walk: cs credit 200 agent=`cs`; cs export 403; operator Fleet POST 200; admin `/me` `permissions:['*']`.
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## 2026-09-11 — IAM on lab, portal door, hardening
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- Restarted fleet with `STAFF_IAM_URL`. Walk: cs credits (agent=`cs`) and is 403 on accounting export; operator fleet POST 200, cs 403; admin `/me` permissions `*`.
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- Portal public door `verae-access-web` `:3021/portal/` (static + `/portal/api` → loopback edge).
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- IAM sessions persist in JSON; login rate-limit per IP+username (8/10min); credits stamp IAM username as authz principal.
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- lan-134 remains disabled unless `FLEET_ENABLE_LAN134=1`. Receipt PDF branded (indigo header + legal footer).
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## 2026-09-11 — staff IAM
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- New `verae-staff-iam` :3028 — users, roles, permissions, sessions, audit UI.
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- Admin login uses IAM when `STAFF_IAM_URL` is set; tabs hide without permission.
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- CS/sales/accounting/access-staff/fleet mutating APIs check `cs.credit`, `sales.quote`, `accounting.export`, `fleet.operate`, etc.
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- Seed: admin/cs/sales/accounting/operator. Shared staff key is fallback only.
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## 2026-09-11 — last three UI leftovers
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- Swagger `/docs` stays stock; banner names it OpenAPI explorer.
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- Shared template `verae-staff-ui` for CS + access-staff.
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- `STAFF_COOKIE_DOMAIN` + nginx example for multi-host.
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## 2026-09-11 — names, staff session, exclusive jobs.events
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- Account-balance stores display names (`customer.put` + lookup by name). Edge writes names on customer create/edit; CS/sales/accounting/staff join from edge if the ledger has no name.
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- New repo `verae-staff-session` (:3027). Department HTML redirects when `STAFF_AUTH=1`.
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- `JOBS_EVENTS_EXCLUSIVE=1` makes `verae-jobs-events` the durable consumer; middleware webhook router backs off.
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- Catalog index is cards. Disabled fleet machines are grey, not degraded yellow.
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## 2026-09-11 — UI design-system pass
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- Restyled CS/sales/accounting/access-staff to portal indigo; dollars + names.
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- Fleet ⋯ menus, role chips, Docs cards, 0.0.0.0 copy, simulator indigo (orange = faults).
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- Portal masked API key; admin customer drawer; empty invoice illustrations.
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- Catalog system-ui. New independent repo **UI-Docs** (walkthrough, screenshots, UI-REVIEW.pdf).
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## Second pass (2–5)
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- Identity used from portal when `IDENTITY_URL` set.
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- Leaf loads allow-list from nats-accounts `policy.json`.
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- Staff plane is a first-class mailbox (`verae-access-staff`).
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- jobs.events mailbox process `verae-jobs-events` (passthrough + count).
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# NATS — zapier-decisions
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None. Documentation repo.
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# zapier-decisions
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Lab log of architecture decisions, actions taken, and open todos while cleaning the Verae × Zapier stack.
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**Forgejo:** https://git.georgelambert.org/marchon/zapier-decisions
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| File | What |
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|------|------|
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| [STATUS.md](STATUS.md) | **Current status** (2026-09-12) |
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| [reports/nats-cluster-bench.md](reports/nats-cluster-bench.md) | NATS cluster speed report (charts, HTML, PDF) |
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| [reports/ns1-host/nats-cluster-bench-ns1.md](reports/ns1-host/nats-cluster-bench-ns1.md) | Second study: all code on NS1 (methodology + tuning) |
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| [reports/ns1-maximize/nats-cluster-bench-ns1.md](reports/ns1-maximize/nats-cluster-bench-ns1.md) | Maximized: 8c/16G/tmpfs vs baseline |
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| [LOG.md](LOG.md) | Chronological actions |
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| [TODO.md](TODO.md) | Open items |
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| [decisions/](decisions/) | One file per decision |
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No runtime. Not a NATS mailbox.
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# Current status — 2026-09-12
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Verae Time × Zapier is a **working lab** on one Proxmox host (**NS1.GEORGELAMBERT.ORG**, `70.88.205.138`). Public HTTPS doors, catalog, keep/fleet, and a **test 3-node NATS cluster** on separate LXC guests are up. The test environment **points at that cluster**. Zapier Platform `push` and live `api.veraetime.net` are still waiting on operator login / bind credentials.
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**Progress repo:** this file in [zapier-decisions](https://git.georgelambert.org/marchon/zapier-decisions).
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**Catalog:** https://zapier.georgelambert.org/packages/zapier-decisions/STATUS.pdf
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**Monorepo:** `master-zapier-plan-draft` (`main` / `master`).
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---
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## Live right now
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| Layer | State |
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|-------|--------|
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| Catalog | https://zapier.georgelambert.org/ (PDF links path-relative; module/model books work) |
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| Public doors | portal, api, zap, iam, mw, fleet, git — last off-box GET 8/8 OK |
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| Keep + fleet | Running. systemd + linger **enabled** for next reboot (current processes were not double-started as systemd) |
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| Test NATS | **3-node JetStream on `vmbr1`:** LXC 511/512/513 `nats-a/b/c` at `10.10.10.21–23`. Cluster name `verae`, 2 routes each. |
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| Product streams | `ZAPIER_JOBS`, `ZAPIER_EVENTS`, `ZAPIER_WEBHOOKS`, `ZAPIER_USAGE`, `VERAE_ARCHIVE` — **replicas=3** |
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| Modules on that cluster | Fleet, keep, middleware (`natsConnected: true`), billing, access planes. `NATS_URL` lists all three URLs. |
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| Host loopback `:4222` | Still listening; **clients no longer use it** |
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| Worker CT **510** `verae-px-worker` | `10.10.10.20` on `vmbr1`. Keep worm+tree **200** on the cluster |
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| Backup | Timer `verae-backup.timer` enabled; snapshots under `/SSD2/backups/verae/` |
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| Uptime | Loop on px-worker (`:3870/status`), last tick `failed: 0` |
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Client URL (private `vmbr1` only):
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```text
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nats://10.10.10.21:4222,nats://10.10.10.22:4222,nats://10.10.10.23:4222
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```
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Repo: https://git.georgelambert.org/marchon/verae-nats-cluster
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### Cluster message speed (`20260912T045131Z`)
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Measured from LXC **510** (not a nats-* server) against `10.10.10.21–23`.
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**Full report (charts + explanations):** [HTML](https://zapier.georgelambert.org/packages/zapier-decisions/reports/nats-cluster-bench.html) · [PDF](https://zapier.georgelambert.org/packages/zapier-decisions/reports/nats-cluster-bench.pdf) · [markdown](reports/nats-cluster-bench.md)
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**Second study (all code on NS1.GEORGELAMBERT.ORG / 70.88.205.138, run `20260912T051237Z`):** [HTML](https://zapier.georgelambert.org/packages/zapier-decisions/reports/ns1-host/nats-cluster-bench-ns1.html) · [PDF](https://zapier.georgelambert.org/packages/zapier-decisions/reports/ns1-host/nats-cluster-bench-ns1.pdf) · [markdown](reports/ns1-host/nats-cluster-bench-ns1.md). Orchestrator, nats bench, charts, HTML, and PDF ran on 138; traffic was LXC 510 → 511–513 on `vmbr1`. Includes full methodology and fine-tuning notes. Host load ~8.5/40 during the run; JetStream 1p 128 B was **7.4k** durable pubs/s (vs ~16k on the quieter first ladder); ping p99 **1.38 ms**.
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**Maximized study (`20260912T053120Z`):** 8 cores + 16 GiB on 510–513, `max_mem: 8G`, JetStream **tmpfs** for the ladder (ZFS restored after). veth/10G unchanged. [HTML](https://zapier.georgelambert.org/packages/zapier-decisions/reports/ns1-maximize/nats-cluster-bench-ns1.html) · [PDF](https://zapier.georgelambert.org/packages/zapier-decisions/reports/ns1-maximize/nats-cluster-bench-ns1.pdf).
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| Metric | Baseline 051237Z | Maximized | Ratio |
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|--------|------------------|-----------|-------|
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| JS file r=3 1p 128 B | 7,393 pubs/s | **17,388** | **2.35×** |
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| JS memory r=3 4p 128 B | — | **36,355** | ~4.9× vs baseline file 1p |
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| Core 1p 128 B pub | 502,502 | 599,004 | 1.19× |
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| Ping p99 | 1.377 ms | **0.684 ms** | **2.01× faster** |
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Live cluster **keeps 8 cores / 16 GiB / max_mem 8G**. Product streams are back on ZFS (tmpfs was study-only).
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Short tables: [BENCH.md](https://git.georgelambert.org/marchon/verae-nats-cluster/src/branch/main/BENCH.md). Re-run: `bash scripts/bench.sh` on NS1.
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| Kind | Load | Result |
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|------|------|--------|
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| Core NATS | 1p1s 50k×128 B | ~1.20M msgs/s aggregate |
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| Core NATS | 8p8s 200k×128 B | ~2.01M msgs/s aggregate |
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| Core NATS | 4p4s 50k×1 KiB | ~630k msgs/s (~616 MB/s) |
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| JetStream file r=3 | 1–4 pubs, 128 B | ~16k durable pubs/s |
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| JetStream file r=3 | 4 pubs, 1 KiB | ~13.5k durable pubs/s |
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| Ping (sequential RTT) | 1k×128 B | avg 0.307 ms, p99 0.734 ms |
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| Flood (burst queueing) | 8p 20k×128 B | avg 454 ms |
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Product job/event/archive traffic is the JetStream row. Ping is one-message delay; flood is the mailbox catching up after a burst.
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---
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## Built and checked in (Forgejo, each its own repo)
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IAM, portal on access-web, keep/watch/guard, fleet floors, host-deps, catalog host-move docs, plus:
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| Repo | Job |
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|------|-----|
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| verae-uptime | Off-box HTTPS GET of public doors |
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| verae-backup | SQLite / keep / worm-tree tar; restore dry-run default |
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| verae-deploy | Tagged checkout + npm ci on the target OS |
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| verae-proxmox | LXC 510 worker provision |
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| verae-nats-cluster | LXC 511–513 JetStream cluster |
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---
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## Still open
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| Item | Notes |
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|------|--------|
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| Zapier Platform `push` | Needs Zapier login (see below) |
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| `MOCK_VERAE=false` | Live `api.veraetime.net` + admin bind credentials (see below) |
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| NATS nkeys/mTLS | Cluster is up **without** accounts so existing `NATS_URL`s work. `verae-nats-accounts` remains the sketch. Flip only after every client has credentials. Isolation today is `vmbr1`, not nkeys. |
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| lan-134 | Still disabled (SSH not working) |
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| Reboot test | systemd should own keep/fleet after reboot; do not also `nohup guard.sh` |
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| Hardware NATS | Same three configs, three boxes, private NIC — change IPs in `cluster.env` |
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---
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## Once we have a Zapier login
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Zapier cloud only talks **HTTPS** to our Zap plane (`https://zap.zapier.georgelambert.org`). No NATS, no `api.veraetime.net`.
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1. `zapier login` (or `zapier-platform login`).
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2. In `packages/verae-zapier` (and `verae-activate` if the tiny app is still wanted):
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- `zapier-platform register` (or attach an existing app id).
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- `MIDDLEWARE_BASE_URL=https://zap.zapier.georgelambert.org` (or `https://mw.zapier.georgelambert.org` if skipping the Zap plane).
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- `zapier-platform build` and `validate`.
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3. `zapier-platform push` as a **private** app.
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4. Invite the workspace; create a Zap:
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- Auth = portal **API key** (`zmw_…`), not a Verae JWT.
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- Test **Create Timestamp and Wait**, **Create Timestamp** (async `jobId`), **Find Job Status**, **Timestamp Completed** REST Hook.
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5. Fix anything `validate` / `push` flags (auth labels, samples, 402/403 mapping).
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6. When the contract is stable, bump the platform version and invite a real user.
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Do **not** put NATS URLs or Verae passwords into Zapier.
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---
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## Once `MOCK_VERAE=false` and live `api.veraetime.net`
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Middleware already has the live HTTP client. Still needed:
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1. `VERAE_API_BASE_URL=https://api.veraetime.net` and working **login** (username/password → JWT). JWT stays in middleware (`tokenRef`); Zapier never sees it.
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2. Confirm OpenAPI vs our client:
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- `POST /api/timestamp` → **202** `{ jobId }`
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- `GET /api/status/{jobId}` until `completed` / `failed`
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- `POST /api/verify`
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- Batch create/status if used
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3. **Hash lookup is not on the live OpenAPI** — `veraeClient.lookupHash` returns **501** when not mocking. Central-chain “find by SHA-256” needs a Verae API gap fill or our own store.
|
||||
4. Map live status JSON into the receipt shape the Zap app expects (`certificate`, `timestamp`, `blockIndex`, `sha256`).
|
||||
5. Token refresh, 401 retry, and 402/403 mapping against real errors.
|
||||
6. One live seal in the lab, then REST Hook delivery to `hooks.zapier.com`.
|
||||
|
||||
---
|
||||
|
||||
## Submit → jobId → wait → receipt
|
||||
|
||||
**Yes — that is the designed path**, and it already runs in **mock**.
|
||||
|
||||
1. Zap (or curl) `POST /zapier/v1/timestamp` or `/timestamp/wait`.
|
||||
2. Middleware `createTimestamp` calls Verae `POST /api/timestamp` (or the mock) and gets **`jobId`**.
|
||||
3. It publishes **`verae.zapier.jobs.watch`** on NATS (the 3-node cluster).
|
||||
4. **Wait:** subscribe to **`verae.zapier.jobs.events`** for that `jobId`, or poll `GET /api/status/{jobId}`.
|
||||
5. Job-poller hits Verae status until `completed`.
|
||||
6. Event `timestamp.completed` carries status; webhook-deliver POSTs the Zapier REST Hook.
|
||||
7. Response includes **certificate / timestamp / blockIndex** (mock uses `mock-cert-{jobId}`, `blockIndex: 42`). Async create returns `{ jobId, sha256, existing }` immediately; wait returns the finished status. Same SHA-256 is idempotent (`existing: true`).
|
||||
|
||||
If wait times out, middleware returns **`pending` + `jobId`** so the hook can finish the Zap. Live Verae must match that HTTP contract; we have **not** proven a real chain seal yet (`MOCK_VERAE` is still true).
|
||||
15
TODO.md
Normal file
15
TODO.md
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
# Open todos
|
||||
|
||||
- [ ] Live `api.veraetime.net` with `MOCK_VERAE=false` and admin bind credentials.
|
||||
- [x] Three-node NATS JetStream cluster on distinct Proxmox LXC (`verae-nats-cluster`; test env `NATS_URL` cut over; streams replicas=3).
|
||||
- [ ] NATS nkeys/mTLS on that cluster (accounts file is still the lab stand-in; not flipped so clients keep working on `vmbr1`).
|
||||
- [x] Exclusive JetStream consumer for `verae.zapier.jobs.events` on `verae-jobs-events` (`JOBS_EVENTS_EXCLUSIVE=1`; middleware skips the router).
|
||||
- [x] Auth on CS/sales/accounting HTML via `verae-staff-session` (`STAFF_AUTH=1`).
|
||||
- [x] Staff IAM: named users, roles, permissions (`verae-staff-iam` :3028).
|
||||
- [ ] Zapier Platform `push` of a private app.
|
||||
- [x] Move portal static files fully into `verae-access-web` (`/portal/` public door; API proxied to loopback edge).
|
||||
- [x] Turn IAM on for the running lab (fleet `STAFF_IAM_URL` + restart).
|
||||
- [x] IAM hardening: JSON sessions, login rate-limit, JSON 401 as well as HTML 302, credit principal = IAM username.
|
||||
- [x] Host keep-alive (`verae-keep`) on NS1 with watch+guard; honors admin pause/stop.
|
||||
- [x] Docs synced to IAM, public portal `:3021`, keep, bootstrap server types.
|
||||
- [x] `verae-bootstrap` clones all module repos and installs deps per server type.
|
||||
6
decisions/D001-prepaid-sot.md
Normal file
6
decisions/D001-prepaid-sot.md
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
# D001 — Account-balance is the only prepaid writer
|
||||
|
||||
**Status:** accepted
|
||||
**Step:** 1
|
||||
|
||||
Prepaid cents, credits, usage, and payments persist in `zappier-account-balance` (`books.json`). zappier-edge `balanceCents` is a cache filled from the books reply. Tests without NATS/HTTP books still mutate the cache so unit tests stay hermetic.
|
||||
6
decisions/D002-identity.md
Normal file
6
decisions/D002-identity.md
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
# D002 — veraeUserId is the join key, not the JWT
|
||||
|
||||
**Status:** accepted
|
||||
**Step:** 2
|
||||
|
||||
Public token remains the zappier API key. Chain JWT stays server-side (`tokenRef`). `zappier-identity` is the mailbox for bind/lookup so portal and middleware share one map.
|
||||
6
decisions/D003-public-doors.md
Normal file
6
decisions/D003-public-doors.md
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
# D003 — Access planes are the only public HTTP doors
|
||||
|
||||
**Status:** accepted
|
||||
**Step:** 3
|
||||
|
||||
Zapier → `:3024`, browser → `:3021`, customer API → `:3022`, leaf → `:3023`, staff → `:3025`. zappier-edge listens on `127.0.0.1:3000` for identity, Stripe, admin, and as upstream for those planes.
|
||||
6
decisions/D004-leaf-accounts.md
Normal file
6
decisions/D004-leaf-accounts.md
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
# D004 — Leaf cannot touch billing, even if authz is skipped
|
||||
|
||||
**Status:** accepted
|
||||
**Step:** 4
|
||||
|
||||
`verae-nats-accounts/policy.json` is the allow-list. access-leaf refuses any target not in the leaf set. nats.conf documents INTERNAL vs LEAF accounts for when the lab cluster is replaced with a real accounts-enabled nats-server.
|
||||
6
decisions/D005-fleet-local-first.md
Normal file
6
decisions/D005-fleet-local-first.md
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
# D005 — HTTP services spawn locally; lan-134 stays off
|
||||
|
||||
**Status:** accepted
|
||||
**Step:** 5
|
||||
|
||||
SSH to `70.88.205.134` blocked keepFloor. HTTP apps (`spawn.command`) prefer `kind=local`. `lan-134` is disabled unless `FLEET_ENABLE_LAN134=1`. Failed SSH hosts are skipped after 8s.
|
||||
6
package.json
Normal file
6
package.json
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
{
|
||||
"name": "zapier-decisions",
|
||||
"version": "0.1.0",
|
||||
"private": true,
|
||||
"description": "Architecture decisions and action log for the Verae × Zapier stack"
|
||||
}
|
||||
BIN
reports/charts/core-throughput.png
Normal file
BIN
reports/charts/core-throughput.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 50 KiB |
BIN
reports/charts/core-vs-js.png
Normal file
BIN
reports/charts/core-vs-js.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 38 KiB |
BIN
reports/charts/delay-percentiles.png
Normal file
BIN
reports/charts/delay-percentiles.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 41 KiB |
BIN
reports/charts/js-throughput.png
Normal file
BIN
reports/charts/js-throughput.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 49 KiB |
BIN
reports/charts/payload-size.png
Normal file
BIN
reports/charts/payload-size.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 58 KiB |
1278
reports/nats-cluster-bench.html
Normal file
1278
reports/nats-cluster-bench.html
Normal file
File diff suppressed because it is too large
Load diff
312
reports/nats-cluster-bench.md
Normal file
312
reports/nats-cluster-bench.md
Normal file
|
|
@ -0,0 +1,312 @@
|
|||
**Progress report** · 2026-09-12 · run `20260912T045131Z` (UTC)
|
||||
|
||||
This is the full write-up of the test-environment NATS cluster bench: what was measured, how, the numbers, the charts, and what they mean for Verae Time × Zapier. Short tables also live in [`verae-nats-cluster/BENCH.md`](https://git.georgelambert.org/marchon/verae-nats-cluster/src/branch/main/BENCH.md). Raw logs and CSVs are in that repo under `results/20260912T045131Z/`.
|
||||
|
||||
---
|
||||
|
||||
## 1. Executive summary
|
||||
|
||||
The test cluster is three JetStream nodes on private `vmbr1` (LXC 511–513). The bench client is a **fourth** guest (LXC 510), so the numbers are cluster-plus-network, not a process talking to itself on loopback.
|
||||
|
||||
Two different systems were measured, on purpose:
|
||||
|
||||
| System | What it is | What we got |
|
||||
|--------|------------|-------------|
|
||||
| **Core NATS** | Fire-and-forget pub/sub. No disk, no replica ack. | About **0.75–2.0 million msgs/s** at 128 B, depending on fan-out. At 1 KiB, about **630k msgs/s** and **~616 MB/s** aggregate. |
|
||||
| **JetStream file, replicas=3** | Durable, replicated — **this is what product streams use**. | About **16k durable 128 B pubs/s**, about **13.5k** at 1 KiB. Pull consume keeps up with publish at ~11k msgs/s each side. |
|
||||
| **Ping delay** | One message at a time, publish then wait. | **avg 0.307 ms**, **p99 0.734 ms**, max 2.76 ms (1k × 128 B). |
|
||||
| **Flood delay** | Publishers dump a batch; subscriber drains. | **150–505 ms**. That is **queueing under burst**, not wire time. |
|
||||
|
||||
**For this product:** timestamp jobs, job events, webhooks, and archive puts go through JetStream r=3. Plan capacity against **~16k durable msgs/s** on this stand, not the million-msg core numbers. A quiet job-event hop is a fraction of a millisecond. If a mailbox falls behind, delay jumps into hundreds of milliseconds — that is the flood column.
|
||||
|
||||
Core NATS is still useful: it is the ceiling for non-durable fan-out on this host, and it shows `vmbr1` and the nats-server processes are not the JetStream bottleneck. JetStream is.
|
||||
|
||||
---
|
||||
|
||||
## 2. Why this test exists
|
||||
|
||||
The lab cut the test environment over to the three-node cluster. Before treating that cluster as the message fabric for keep, fleet, middleware, billing, and archive workers, we needed:
|
||||
|
||||
1. **Throughput at several loads** — one publisher vs many, 128 B vs 1 KiB, core vs durable.
|
||||
2. **Delay characteristics** — both the quiet path (one message RTT) and the overloaded path (burst into a mailbox).
|
||||
3. **A client that is not a nats-* server** — otherwise we would be measuring loopback on the broker.
|
||||
|
||||
This is a **lab stand on one Proxmox host**, not three metal boxes. It answers “is this cluster in the right order of magnitude for our traffic?” It does not replace a soak test on dedicated disks.
|
||||
|
||||
---
|
||||
|
||||
## 3. Topology
|
||||
|
||||
```text
|
||||
vmbr1 10.10.10.0/24 (not on vmbr0, not public)
|
||||
-----------------------------------------------
|
||||
LXC 510 LXC 511 LXC 512 LXC 513
|
||||
verae-px-worker nats-a nats-b nats-c
|
||||
10.10.10.20 10.10.10.21 10.10.10.22 10.10.10.23
|
||||
bench client :4222 client :4222 :4222
|
||||
:6222 routes :6222 :6222
|
||||
:8222 loopback :8222 :8222
|
||||
```
|
||||
|
||||
- Cluster name: `verae`. Each server has two routes to the other two.
|
||||
- Client URL: `nats://10.10.10.21:4222,nats://10.10.10.22:4222,nats://10.10.10.23:4222`
|
||||
- HTTP monitor is **loopback :8222** inside each guest. Zapier cloud never talks to NATS.
|
||||
- Product streams already on this cluster (`ZAPIER_JOBS`, `ZAPIER_EVENTS`, `ZAPIER_WEBHOOKS`, `ZAPIER_USAGE`, `VERAE_ARCHIVE`) use **file** storage and **replicas=3**. The JetStream bench used the same settings on a throwaway stream `benchstream`.
|
||||
- Host `127.0.0.1:4222` is still listening on NS1; **clients no longer use it**.
|
||||
|
||||
Credits for the stack: Scott Lindsey, George Lambert, NATS.IO, Grok-Code.
|
||||
|
||||
---
|
||||
|
||||
## 4. Method
|
||||
|
||||
### 4.1 Tools
|
||||
|
||||
| Piece | Role |
|
||||
|-------|------|
|
||||
| `nats` CLI **0.1.6** | Throughput (`nats bench --no-progress --csv`). Its min/avg/max are **publisher rate spread**, not delay. |
|
||||
| `scripts/latency.mjs` | Two connections, header timestamp `t`, delay = receive time − send time. |
|
||||
| `scripts/bench.sh` | Runs the ladder from NS1 via `pct exec` on VMID 510. |
|
||||
| `scripts/bench-report.py` | Turns logs into the short `BENCH.md` table. |
|
||||
|
||||
Re-run on NS1, from `verae-nats-cluster`:
|
||||
|
||||
```bash
|
||||
bash scripts/bench.sh
|
||||
```
|
||||
|
||||
### 4.2 Load ladder
|
||||
|
||||
**Core NATS** (subject `bench.core.*`):
|
||||
|
||||
| Run | Publishers | Subscribers | Messages | Payload |
|
||||
|-----|------------|-------------|----------|---------|
|
||||
| `core-1p1s-50k-128` | 1 | 1 | 50,000 | 128 B |
|
||||
| `core-4p4s-100k-128` | 4 | 4 | 100,000 | 128 B |
|
||||
| `core-8p8s-200k-128` | 8 | 8 | 200,000 | 128 B |
|
||||
| `core-4p4s-50k-1k` | 4 | 4 | 50,000 | 1024 B |
|
||||
|
||||
**JetStream** (`--js --storage file --replicas 3 --stream benchstream`). The stream is deleted between loads so the name never collides:
|
||||
|
||||
| Run | Shape | Messages | Payload |
|
||||
|-----|-------|----------|---------|
|
||||
| `js-1p-20k-128-r3` | 1 publisher | 20,000 | 128 B |
|
||||
| `js-4p-50k-128-r3` | 4 publishers | 50,000 | 128 B |
|
||||
| `js-4p-20k-1k-r3` | 4 publishers | 20,000 | 1024 B |
|
||||
| `js-2p2s-20k-128-r3` | 2 pub + 2 pull sub | 20,000 | 128 B |
|
||||
|
||||
**Delay** (core subjects, two connections):
|
||||
|
||||
| Run | Mode | Count | Pubs | Payload |
|
||||
|-----|------|-------|------|---------|
|
||||
| `lat-ping-1k-128` | **ping** — publish, wait for that message, repeat | 1,000 | 1 | 128 B |
|
||||
| `lat-1p-5k-128` | **flood** — publish all, then drain | 5,000 | 1 | 128 B |
|
||||
| `lat-4p-10k-128` | flood | 10,000 | 4 | 128 B |
|
||||
| `lat-8p-20k-128` | flood | 20,000 | 8 | 128 B |
|
||||
| `lat-4p-5k-1k` | flood | 5,000 | 4 | 1024 B |
|
||||
|
||||
Ping answers “how long does one quiet hop take?” Flood answers “what happens to the last message if we burst N messages into a mailbox?” Those are different questions. Mixing them is how 0.3 ms and 400 ms get confused.
|
||||
|
||||
### 4.3 How to read nats bench columns
|
||||
|
||||
- **Pub msgs/s** — rate at which publishers finished their share.
|
||||
- **Sub msgs/s** — rate at which subscribers finished. With several subscribers on the same subject, core NATS **fans out**, so sub rate can exceed pub rate.
|
||||
- **Aggregate msgs/s** — nats CLI `NATS Pub/Sub stats` line (pub+sub work in one number). Useful as a headline; do not treat it as “the network carried this many unique messages.”
|
||||
- Empty JetStream sub cells mean that run was publish-only (durable write, no consumer in the same process).
|
||||
|
||||
---
|
||||
|
||||
## 5. Throughput results
|
||||
|
||||
### 5.1 Core NATS
|
||||
|
||||
|
||||
|
||||
| Run | Aggregate msgs/s | Pub msgs/s | Pub MB/s | Sub msgs/s | Sub MB/s |
|
||||
|-----|------------------|------------|----------|------------|----------|
|
||||
| `core-1p1s-50k-128` | 1,200,836 | 791,094 | 96.57 | 747,461 | 91.24 |
|
||||
| `core-4p4s-100k-128` | 1,521,256 | 316,312 | 38.61 | 1,299,634 | 158.65 |
|
||||
| `core-8p8s-200k-128` | 2,007,937 | 333,957 | 40.77 | 1,790,736 | 218.60 |
|
||||
| `core-4p4s-50k-1k` | 630,460 | 247,747 | 241.94 | 510,216 | 498.26 |
|
||||
|
||||
**What this chart is saying.** Adding subscribers raises **aggregate** and **sub** rates because each published message is delivered to every subscriber. Publish rate does **not** climb the same way: 1 publisher at 128 B already pushes ~791k msgs/s; 4 and 8 publishers sit around 310–335k msgs/s **each process slower**, while fan-out on the sub side goes to 1.3M then 1.8M.
|
||||
|
||||
That publisher slowdown is expected on this stand. The four/eight publisher processes and the four/eight subscribers all run **inside one LXC** (510) against three broker LXCs on the **same Proxmox CPU and `vmbr1`**. Per-publisher logs show a wide spread (example, 4p core 128 B: 79k–524k msgs/s among the four pubs). That is CPU scheduling and client-side contention, not a NATS cluster that only has one fast node.
|
||||
|
||||
**1:1 at 128 B** is the cleanest core number: **~791k pub, ~747k sub, ~1.20M aggregate**. The cluster and the bridge can move three-quarter-million small messages per second fire-and-forget from a single client pair.
|
||||
|
||||
### 5.2 Payload size (core)
|
||||
|
||||
|
||||
|
||||
Same 4p4s shape, two sizes:
|
||||
|
||||
| Payload | Aggregate msgs/s | Aggregate MB/s | Pub msgs/s | Sub msgs/s |
|
||||
|---------|------------------|----------------|------------|------------|
|
||||
| 128 B | 1,521,256 | 185.70 | 316,312 | 1,299,634 |
|
||||
| 1 KiB | 630,460 | 615.68 | 247,747 | 510,216 |
|
||||
|
||||
Message rate falls; **byte rate rises** (186 MB/s → 616 MB/s aggregate). We are leaving the “tiny message, CPU/syscall bound” region and entering “copying bytes across `vmbr1`.” Job JSON and archive metadata sit nearer 128 B–1 KiB than megabyte blobs (blobs are HTTP/WORM, not NATS payloads).
|
||||
|
||||
### 5.3 JetStream r=3 file
|
||||
|
||||
|
||||
|
||||
| Run | Pub msgs/s | Pub MB/s | Sub msgs/s | Notes |
|
||||
|-----|------------|----------|------------|-------|
|
||||
| `js-1p-20k-128-r3` | **16,155** | 1.97 | — | publish-only |
|
||||
| `js-4p-50k-128-r3` | **16,607** | 2.03 | — | four pubs, same ceiling |
|
||||
| `js-4p-20k-1k-r3` | **13,493** | 13.18 | — | 1 KiB still disk/replica bound |
|
||||
| `js-2p2s-20k-128-r3` | 10,965 | 1.34 | 10,942 | pull consumers keep up |
|
||||
|
||||
**Four publishers do not make JetStream four times faster.** 1p and 4p at 128 B are both ~16k msgs/s. The limiter is **synchronous replication to three file-backed replicas**, not client parallelism. That is the result we wanted to see: the bench stream is behaving like a replicated log, not like core fan-out.
|
||||
|
||||
Pull consume (`js-2p2s`) is slightly slower on publish (~11k) because the same run is also reading. Pub and sub stay matched (10,965 vs 10,942): the consumer is not the straggler.
|
||||
|
||||
1 KiB durable write is ~13.5k msgs/s (~13.2 MB/s). Bytes go up; message rate dips only a little. JetStream here is **ack/fdatasync/replica** bound, not payload-copy bound, in this size range.
|
||||
|
||||
### 5.4 Core vs JetStream (same client, same cluster)
|
||||
|
||||
|
||||
|
||||
The log scale is required: core publish is **~15–50×** JetStream publish on this stand.
|
||||
|
||||
| Shape | Core pub msgs/s | JS r=3 file pub msgs/s | Ratio |
|
||||
|-------|-----------------|------------------------|-------|
|
||||
| 1 publisher, 128 B | 791,094 | 16,155 | ~49× |
|
||||
| 4 publishers, 128 B | 316,312 | 16,607 | ~19× |
|
||||
| 4 publishers, 1 KiB | 247,747 | 13,493 | ~18× |
|
||||
|
||||
This is not JetStream “losing.” Core is allowed to forget a message the instant the server accepts it. JetStream on file with replicas=3 must **record it on a majority** before the publish acks. Our product streams (`ZAPIER_*`, `VERAE_ARCHIVE`) chose that trade on purpose: a job event that survives one LXC dying is worth ~16k msgs/s instead of ~800k.
|
||||
|
||||
If we ever need core-like rates for a signal that may drop, that signal should not be on a replicated file stream.
|
||||
|
||||
---
|
||||
|
||||
## 6. Delay results
|
||||
|
||||
|
||||
|
||||
| Run | Kind | Count | min | avg | p50 | p90 | p99 | max |
|
||||
|-----|------|-------|-----|-----|-----|-----|-----|-----|
|
||||
| `lat-ping-1k-128` | ping (sequential RTT) | 1000 | 0.254 ms | **0.307 ms** | 0.286 ms | 0.332 ms | **0.734 ms** | 2.763 ms |
|
||||
| `lat-1p-5k-128` | flood | 5000 | 149.3 ms | 238.6 ms | 248.8 ms | 274.3 ms | 279.4 ms | 279.7 ms |
|
||||
| `lat-4p-5k-1k` | flood | 5000 | 155.1 ms | 211.7 ms | 217.6 ms | 223.3 ms | 227.8 ms | 228.4 ms |
|
||||
| `lat-4p-10k-128` | flood | 10000 | 174.2 ms | 263.2 ms | 266.7 ms | 299.1 ms | 304.2 ms | 304.5 ms |
|
||||
| `lat-8p-20k-128` | flood | 20000 | 304.6 ms | 453.7 ms | 466.3 ms | 499.9 ms | 505.1 ms | 505.6 ms |
|
||||
|
||||
The dashed line on the chart is 1 ms. Only **ping** lives there.
|
||||
|
||||
### 6.1 Ping — the quiet hop
|
||||
|
||||
One publisher, one subscriber, two connections, wait for each message before sending the next.
|
||||
|
||||
- **min 0.254 ms** — guest → `vmbr1` → a nats-server → `vmbr1` → guest.
|
||||
- **p50 0.286 ms / avg 0.307 ms** — typical.
|
||||
- **p99 0.734 ms** — still under a millisecond.
|
||||
- **max 2.763 ms** — one outlier in 1,000 samples (GC, scheduler, or a slow route). Not the tail we design for.
|
||||
|
||||
A middleware `jobs.watch` publish followed by a waiter on `jobs.events` is this shape when the poller is keeping up. Compared with HTTPS to Zapier (tens to hundreds of milliseconds) or a live Verae `GET /api/status/{jobId}`, NATS RTT is noise.
|
||||
|
||||
### 6.2 Flood — queueing under burst
|
||||
|
||||
Publishers write the whole batch as fast as they can, then the subscriber drains. Each message’s delay is “how long was I in the buffer before the subscriber got to me?”
|
||||
|
||||
That is why:
|
||||
|
||||
- **min is already ~150–300 ms** — even the first messages wait behind a burst that filled the socket/client queue.
|
||||
- **p50 ≈ p99 ≈ max** — a queue drain has a tight distribution: everyone waits for roughly the same backlog.
|
||||
- **8p × 20k is ~450 ms avg** — twice the messages of 4p × 10k, roughly twice the wait. Linear in backlog, not in cluster diameter.
|
||||
|
||||
Flood is **not** a measurement of NATS being slow. The ping column proves the hop is ~0.3 ms. Flood is a measurement of **what operators will see if a consumer stalls** (job-events mailbox, webhook deliver, archive reply). Backlog time ≈ `queued_messages / consume_rate`.
|
||||
|
||||
### 6.3 1 KiB flood vs 128 B flood
|
||||
|
||||
4 publishers, 5k messages at 1 KiB: avg **212 ms**, slightly **faster** than 4p 10k × 128 B (263 ms) because the **count is half**, even though each message is 8× larger. Again: delay here tracks **how many messages are queued**, not payload size, in this range.
|
||||
|
||||
---
|
||||
|
||||
## 7. What this means for Verae × Zapier
|
||||
|
||||
Product subjects on this cluster:
|
||||
|
||||
| Address | Kind | Bench analogue |
|
||||
|---------|------|----------------|
|
||||
| `verae.zapier.jobs.watch` | work queue (JetStream) | JS durable pub ~16k/s |
|
||||
| `verae.zapier.jobs.events` | events | JS + ping if waiters keep up; flood if they do not |
|
||||
| `verae.zapier.webhooks.deliver` | work queue | JS durable |
|
||||
| `verae.zapier.usage` | optional | JS durable |
|
||||
| `verae.billing.*` | request-reply | ping (quiet RTT) |
|
||||
| `verae.archive.put` / `query` / `reply.*` | JetStream + broadcast query | JS durable; query fan-out is closer to core but still JS-backed puts |
|
||||
|
||||
**Capacity.** 16k durable 128 B pubs/s is **~1.4×10⁹ messages/day** if you could fill the pipe. We will not. Zapier HTTPS, live `api.veraetime.net`, WORM bloom checks, and human Zap runs sit far below that. This cluster is not the product bottleneck on NS1.
|
||||
|
||||
**Latency budget.** A timestamp wait is: HTTP in → NATS watch → poll Verae → NATS event → HTTP out (or REST Hook). The NATS pieces are **sub-millisecond** when caught up. Do not spend time “optimizing NATS RTT” until Zapier/Verae HTTP is in the same band.
|
||||
|
||||
**Backlogs.** The failure mode that *does* show up in these numbers is flood delay. If webhook-deliver or job-events consumers pause (keep stopped, replica floor, a blocked HTTPS post to `hooks.zapier.com`), waiters will see **hundreds of milliseconds to seconds** of queue time. Fleet replica floors and keep exist to prevent that, not because 0.3 ms is too slow.
|
||||
|
||||
**Hardware move.** Same three configs, three boxes, private NIC. Expect:
|
||||
|
||||
- Core numbers to change with NIC and CPU (maybe up, maybe down).
|
||||
- JetStream numbers to change **more**, because they are disk + fsync + replica RTT. Distinct SSDs should help; a slow shared datastore would hurt.
|
||||
- Ping RTT to grow by whatever the real NIC and switch add (still likely low milliseconds on a LAN).
|
||||
|
||||
---
|
||||
|
||||
## 8. Limits of this measurement
|
||||
|
||||
1. **One Proxmox host.** LXC 510–513 share cores, memory, and the host’s disk. Replica=3 on file is **three files on the same underlying storage**, not three failure domains. HA of “one disk dies” is **not** proven. HA of “one LXC process dies” is the actual claim.
|
||||
2. **Short runs.** Tens of thousands of messages, seconds of wall time. No compaction, no multi-hour page-cache eviction, no snapshot/restore during load.
|
||||
3. **No TLS, no nkeys.** `verae-nats-accounts` is still a sketch. Auth would add CPU; it would not turn 16k into 800k.
|
||||
4. **One bench client.** All publishers live in 510. A fleet of workers on several CTs might publish more into JetStream until disk/replicas saturate — the 1p vs 4p JS result says that saturation is already ~16k from one CT.
|
||||
5. **nats 0.1.6** does not report delay. Anyone reading `min | avg | max msgs` on a bench log as microseconds will get the wrong story. Delay is only `latency.mjs`.
|
||||
6. **Core aggregate ≠ unique messages.** Fan-out double-counts. Use pub or sub columns when comparing to JetStream.
|
||||
7. **Not a Zapier or Verae API bench.** Those are still blocked on operator login / live credentials.
|
||||
|
||||
---
|
||||
|
||||
## 9. How to reproduce
|
||||
|
||||
On NS1 (Proxmox), from the `verae-nats-cluster` checkout:
|
||||
|
||||
```bash
|
||||
bash scripts/status.sh # 3/3 JetStream
|
||||
bash scripts/bench.sh # writes results/<utc>/ and BENCH.md
|
||||
```
|
||||
|
||||
The client VMID defaults to **510**. Override with `CLIENT_VMID=…`. `NATS_URL` comes from `client.env`.
|
||||
|
||||
Rebuild this progress report (charts + HTML + PDF) from the monorepo:
|
||||
|
||||
```bash
|
||||
python3 packages/zapier-decisions/scripts/build-nats-bench-report.py
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 10. Appendix — environment and files
|
||||
|
||||
| Item | Value |
|
||||
|------|-------|
|
||||
| Run stamp | `20260912T045131Z` |
|
||||
| Client | LXC 510 `verae-px-worker` `10.10.10.20` |
|
||||
| Servers | 511/512/513 `nats-a/b/c` `10.10.10.21–23` |
|
||||
| nats CLI | 0.1.6 linux-amd64 |
|
||||
| JS storage | file, replicas=3, stream `benchstream` (deleted between loads) |
|
||||
| Isolation | `vmbr1` only; no `0.0.0.0` client bind |
|
||||
| Short tables | [BENCH.md](https://git.georgelambert.org/marchon/verae-nats-cluster/src/branch/main/BENCH.md) |
|
||||
| Raw logs | `packages/verae-nats-cluster/results/20260912T045131Z/` |
|
||||
| This report | `packages/zapier-decisions/reports/nats-cluster-bench.{md,html,pdf}` |
|
||||
|
||||
Publisher rate spread (nats CLI, msgs/s, **not** delay):
|
||||
|
||||
| Run | min | avg | max |
|
||||
|-----|-----|-----|-----|
|
||||
| core-4p4s-100k-128 pub | 79,260 | 257,805 | 524,453 |
|
||||
| core-8p8s-200k-128 pub | 41,744 | 71,488 | 152,536 |
|
||||
| core-4p4s-50k-1k pub | 61,936 | 110,271 | 176,262 |
|
||||
| js-4p-50k-128-r3 pub | 4,154 | 5,176 | 6,628 |
|
||||
| js-4p-20k-1k-r3 pub | 3,373 | 4,063 | 5,121 |
|
||||
| js-2p2s-20k-128-r3 pub | 5,485 | 7,081 | 8,678 |
|
||||
|
||||
Wide core spreads are the single-client-CT effect described in §5.1. JetStream spreads are narrow and low — every publisher is waiting on the same replicated write path.
|
||||
BIN
reports/nats-cluster-bench.pdf
Normal file
BIN
reports/nats-cluster-bench.pdf
Normal file
Binary file not shown.
BIN
reports/ns1-host/charts/core-throughput.png
Normal file
BIN
reports/ns1-host/charts/core-throughput.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 56 KiB |
BIN
reports/ns1-host/charts/core-vs-js.png
Normal file
BIN
reports/ns1-host/charts/core-vs-js.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 42 KiB |
BIN
reports/ns1-host/charts/delay-percentiles.png
Normal file
BIN
reports/ns1-host/charts/delay-percentiles.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 40 KiB |
BIN
reports/ns1-host/charts/js-throughput.png
Normal file
BIN
reports/ns1-host/charts/js-throughput.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 49 KiB |
BIN
reports/ns1-host/charts/payload-size.png
Normal file
BIN
reports/ns1-host/charts/payload-size.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 52 KiB |
1291
reports/ns1-host/nats-cluster-bench-ns1.html
Normal file
1291
reports/ns1-host/nats-cluster-bench-ns1.html
Normal file
File diff suppressed because it is too large
Load diff
334
reports/ns1-host/nats-cluster-bench-ns1.md
Normal file
334
reports/ns1-host/nats-cluster-bench-ns1.md
Normal file
|
|
@ -0,0 +1,334 @@
|
|||
**Progress report (second study)** · run `20260912T051237Z` (UTC)
|
||||
|
||||
> **Execution provenance.** Every process for this study ran on **NS1.GEORGELAMBERT.ORG** (`70.88.205.138`): the orchestrator (`study-on-ns1.sh`), `nats bench`, `latency.mjs` (inside LXC 510 on this hypervisor), charting (`matplotlib`), and HTML/PDF (`pandoc` + `weasyprint`). The operator laptop did **not** publish, subscribe, draw charts, or render the PDF. Traffic stayed on `vmbr1` from LXC **510** to `nats-a/b/c` (**511–513**).
|
||||
|
||||
This is a full methodology write-up plus the numbers from that on-host run. The earlier report (`nats-cluster-bench`, run `20260912T045131Z`) used the same cluster but was **orchestrated and rendered off-box**. Use this document when you need “it was all run on 138.”
|
||||
|
||||
---
|
||||
|
||||
## 1. Executive summary
|
||||
|
||||
| Item | This NS1-host run |
|
||||
|------|-------------------|
|
||||
| Control plane | NS1.GEORGELAMBERT.ORG (`70.88.205.138`), user `marchon` |
|
||||
| Bench client | LXC 510 `verae-px-worker` |
|
||||
| Brokers | LXC 511/512/513 `nats-a/b/c` on `10.10.10.21–23` |
|
||||
| Client URL | `nats://10.10.10.21:4222,nats://10.10.10.22:4222,nats://10.10.10.23:4222` |
|
||||
| Host load before | `8.59 8.39 8.15 5/3843 4096277` |
|
||||
| Host load after | `8.67 8.33 8.15 9/3863 4114865` |
|
||||
| Core 1p1s 128 B pub | 502,502 msgs/s |
|
||||
| JetStream 1p 128 B r=3 | 7,393 durable pubs/s |
|
||||
| Ping p50 / p99 | 0.395ms / 1.377ms |
|
||||
|
||||
Product traffic is the JetStream row. Ping is one-message delay. Flood is mailbox catch-up after a burst.
|
||||
|
||||
---
|
||||
|
||||
## 2. Where it ran (and where it did not)
|
||||
|
||||
```text
|
||||
Operator laptop ──ssh──► NS1.GEORGELAMBERT.ORG 70.88.205.138
|
||||
study-on-ns1.sh
|
||||
python3 build-ns1-study-report.py
|
||||
sudo pct exec 510 ──► nats bench / latency.mjs
|
||||
│
|
||||
▼ vmbr1
|
||||
10.10.10.21-23 :4222
|
||||
```
|
||||
|
||||
- **Did run on 138:** bash, python3, matplotlib, pandoc, weasyprint, `pct`, nats-server (in LXC), nats CLI and Node (in LXC 510).
|
||||
- **Did not run on the laptop:** no local `nats bench`, no local charting, no local WeasyPrint for this file.
|
||||
|
||||
---
|
||||
|
||||
## 3. Results (this run)
|
||||
|
||||
### Host and brokers
|
||||
|
||||
**Before**
|
||||
|
||||
| Node | VMID | connections | in_msgs | out_msgs | cpu | cores | mem (B) | jetstream |
|
||||
|------|------|-------------|---------|----------|-----|-------|---------|-----------|
|
||||
| nats-a | 511 | 2 | 1,721,203 | 4,933,759 | 1 | 1 | 26,398,720 | True |
|
||||
| nats-b | 512 | 2 | 1,613,205 | 3,513,096 | 0 | 1 | 23,097,344 | True |
|
||||
| nats-c | 513 | 2 | 1,760,973 | 4,048,582 | 2 | 1 | 23,867,392 | True |
|
||||
|
||||
**After**
|
||||
|
||||
| Node | VMID | connections | in_msgs | out_msgs | cpu | cores | mem (B) | jetstream |
|
||||
|------|------|-------------|---------|----------|-----|-------|---------|-----------|
|
||||
| nats-a | 511 | 2 | 2,097,596 | 5,910,161 | 1 | 1 | 38,273,024 | True |
|
||||
| nats-b | 512 | 2 | 2,121,816 | 4,746,539 | 1 | 1 | 41,361,408 | True |
|
||||
| nats-c | 513 | 2 | 2,241,366 | 5,053,978 | 1 | 1 | 38,162,432 | True |
|
||||
|
||||
nproc=40 · uname=`Linux NS1.GEORGELAMBERT.ORG 6.17.2-1-pve #1 SMP PREEMPT_DYNAMIC PMX 6.17.2-1 (2025-10-21T11:55Z) x86_64 GNU/Linux`
|
||||
|
||||
### Throughput
|
||||
|
||||
| Run | Mode | Aggregate msgs/s | Pub msgs/s | Pub MB/s | Sub msgs/s | Sub MB/s |
|
||||
|-----|------|------------------|------------|----------|------------|----------|
|
||||
| `core-1p1s-50k-128` | core pub/sub | 776,331 | 502,502 | 61.34 | 420,976 | 51.39 |
|
||||
| `core-4p4s-100k-128` | core pub/sub | 1,278,454 | 379,985 | 46.38 | 1,078,910 | 131.70 |
|
||||
| `core-4p4s-50k-1k` | core pub/sub | 581,464 | 209,545 | 204.63 | 482,645 | 471.33 |
|
||||
| `core-8p8s-200k-128` | core pub/sub | 2,065,217 | 333,731 | 40.74 | 1,847,242 | 225.49 |
|
||||
| `js-1p-20k-128-r3` | jetstream r=3 file | — | 7,393 | 0.90 | — | — |
|
||||
| `js-2p2s-20k-128-r3` | jetstream r=3 file | 15,416 | 7,728 | 0.94 | 7,711 | 0.94 |
|
||||
| `js-4p-20k-1k-r3` | jetstream r=3 file | — | 14,985 | 14.63 | — | — |
|
||||
| `js-4p-50k-128-r3` | jetstream r=3 file | — | 17,986 | 2.20 | — | — |
|
||||
|
||||
### Round-trip delay
|
||||
|
||||
| Run | Kind | Count | Pubs | Size | min | avg | p50 | p90 | p99 | max |
|
||||
|-----|------|-------|------|------|-----|-----|-----|-----|-----|-----|
|
||||
| `lat-ping-1k-128` | ping (sequential RTT) | 1000 | 1 | 128 B | 0.341ms | 0.470ms | 0.395ms | 0.651ms | 1.377ms | 3.243ms |
|
||||
| `lat-1p-5k-128` | flood (burst queueing) | 5000 | 1 | 128 B | 132.425ms | 203.717ms | 204.458ms | 241.750ms | 249.468ms | 249.640ms |
|
||||
| `lat-4p-5k-1k` | flood (burst queueing) | 5000 | 4 | 1024 B | 196.422ms | 221.264ms | 224.039ms | 233.180ms | 236.798ms | 238.177ms |
|
||||
| `lat-4p-10k-128` | flood (burst queueing) | 10000 | 4 | 128 B | 211.108ms | 294.925ms | 300.254ms | 314.223ms | 315.551ms | 316.091ms |
|
||||
| `lat-8p-20k-128` | flood (burst queueing) | 20000 | 8 | 128 B | 280.608ms | 414.972ms | 409.802ms | 513.821ms | 535.394ms | 536.084ms |
|
||||
|
||||
### Core NATS
|
||||
|
||||
|
||||
|
||||
*Core NATS throughput at four loads (NS1 host run)*
|
||||
### Payload size (core)
|
||||
|
||||
|
||||
|
||||
*Core NATS 128 B vs 1 KiB (NS1 host run)*
|
||||
### JetStream r=3 file
|
||||
|
||||
|
||||
|
||||
*JetStream durable publish rate (NS1 host run)*
|
||||
### Core vs JetStream
|
||||
|
||||
|
||||
|
||||
*Core vs JetStream publish rate, log scale (NS1 host run)*
|
||||
### Delay
|
||||
|
||||
|
||||
|
||||
*Ping vs flood delay percentiles, log scale (NS1 host run)*
|
||||
|
||||
---
|
||||
|
||||
## 4. Study methodology
|
||||
|
||||
### 4.1 Question
|
||||
|
||||
On the NS1 test stand, what message **throughput** and **delay** does the three-node `verae` JetStream cluster deliver at several loads, and which part of the stack is the limiter for product traffic (jobs, events, webhooks, archive)?
|
||||
|
||||
### 4.2 Hypotheses (stated before the run)
|
||||
|
||||
1. **H1 — Core vs JetStream.** Fire-and-forget core NATS is at least an order of magnitude faster than JetStream **file + replicas=3**, because durable publish waits for a majority disk replica.
|
||||
2. **H2 — JetStream parallelism.** Adding publishers does **not** linearly increase JetStream write rate once the replica log is saturated.
|
||||
3. **H3 — Quiet delay.** Sequential pub→sub round trip on `vmbr1` is well under 1 ms p99 when the consumer is waiting.
|
||||
4. **H4 — Burst delay.** If publishers dump a batch before the subscriber drains, observed delay is **queueing time**, roughly linear in backlog, not in cluster hop count.
|
||||
5. **H5 — Payload.** Moving 128 B → 1 KiB lowers message rate and raises byte rate on core NATS; JetStream in this size band stays replica/fsync bound.
|
||||
|
||||
### 4.3 Independent variables (what we changed)
|
||||
|
||||
| Factor | Levels |
|
||||
|--------|--------|
|
||||
| Transport | Core NATS pub/sub vs JetStream file replicas=3 |
|
||||
| Publisher count | 1, 2, 4, 8 |
|
||||
| Subscriber count | 0 (JS publish-only), 1, 2, 4, 8 |
|
||||
| Message count | 1k, 5k, 10k, 20k, 50k, 100k, 200k (by ladder step) |
|
||||
| Payload | 128 B, 1024 B |
|
||||
| Delay mode | **ping** (publish, wait, repeat) vs **flood** (publish all, then drain) |
|
||||
|
||||
### 4.4 Dependent variables (what we recorded)
|
||||
|
||||
| Metric | Instrument | Unit |
|
||||
|--------|------------|------|
|
||||
| Publish rate | `nats bench` 0.1.6 Pub stats | msgs/s, MB/s |
|
||||
| Subscribe rate | `nats bench` Sub stats | msgs/s, MB/s |
|
||||
| Aggregate | `nats bench` NATS Pub/Sub stats | msgs/s (fan-out counts both sides) |
|
||||
| Publisher spread | nats min/avg/max **msgs/s** | not delay |
|
||||
| One-way-ish RTT | `latency.mjs` header timestamp | min, avg, p50, p90, p99, max |
|
||||
| Host load | `/proc/loadavg` before and after | load average |
|
||||
| Broker counters | `http://127.0.0.1:8222/varz` inside each nats LXC | connections, in/out msgs, cpu, mem |
|
||||
|
||||
**Important:** nats CLI 0.1.6 min/avg/max are **rate spread across publishers**, not microseconds of delay. Delay is only `latency.mjs`.
|
||||
|
||||
### 4.5 Controls and constants
|
||||
|
||||
- Cluster name `verae`, three routes, client `:4222`, cluster `:6222`, monitor loopback `:8222`.
|
||||
- Client URL always the three-node list on `vmbr1` (never host `127.0.0.1:4222`, never `vmbr0`).
|
||||
- Bench client is LXC **510**, not a nats-* server.
|
||||
- JetStream bench stream name `benchstream`, **file** storage, **replicas=3**, deleted between JS loads (`nats stream rm --force`) so names do not collide.
|
||||
- Product streams were **not** the bench target (no load test on `ZAPIER_*` / `VERAE_ARCHIVE`).
|
||||
- No TLS, no nkeys, no account isolation (isolation is `vmbr1`).
|
||||
- Same nats CLI version (0.1.6) and `nats@2` Node client as the first ladder.
|
||||
|
||||
### 4.6 Procedure
|
||||
|
||||
1. Confirm this script is executing on **NS1.GEORGELAMBERT.ORG**. Refuse otherwise.
|
||||
2. Snapshot host load, memory, LXC configs, and each nats `varz`.
|
||||
3. From NS1, `pct exec 510` the core ladder (1p1s, 4p4s, 8p8s at 128 B; 4p4s at 1 KiB).
|
||||
4. Delete `benchstream`; JS ladder (1p, 4p, 4p×1 KiB, 2p2s pull) at replicas=3 file.
|
||||
5. Copy `latency.mjs` into 510; ping then flood at several batch sizes.
|
||||
6. Snapshot host/`varz` again.
|
||||
7. Parse logs on **this host**; draw charts; write HTML and PDF on **this host**.
|
||||
|
||||
No publish, subscribe, chart, or PDF process runs on the operator laptop for this study.
|
||||
|
||||
### 4.7 Instrumentation path
|
||||
|
||||
```text
|
||||
[NS1 host 70.88.205.138]
|
||||
study-on-ns1.sh (bash + python3)
|
||||
|
|
||||
| sudo pct exec 510
|
||||
v
|
||||
[LXC 510 verae-px-worker 10.10.10.20]
|
||||
nats bench / node latency.mjs
|
||||
|
|
||||
| NATS client protocol to
|
||||
v
|
||||
[LXC 511/512/513 10.10.10.21-23 :4222]
|
||||
nats-server -js cluster routes :6222
|
||||
```
|
||||
|
||||
The hypervisor issues the guest commands. The messages themselves never leave `vmbr1`.
|
||||
|
||||
### 4.8 Threats to validity
|
||||
|
||||
| Threat | Effect on numbers |
|
||||
|--------|-------------------|
|
||||
| **One physical host** | Three “replicas” share CPU, memory, and usually the same datastore. This measures process/LXC HA, not disk HA. |
|
||||
| **Shared load** | NS1 also runs Caddy, Forgejo, keep, fleet, portal, and other CTs. Load average during a run is part of the result, not noise to ignore. |
|
||||
| **Single bench client** | All publishers live in 510. Per-publisher rate spread is contention in that guest. |
|
||||
| **Short runs** | Seconds of traffic. No compaction, no multi-hour page-cache eviction, no snapshot during load. |
|
||||
| **No TLS/nkeys** | Production auth will cost CPU. Do not treat these rates as post-nkeys rates. |
|
||||
| **Fan-out aggregate** | Core aggregate msgs/s counts pub+sub. Do not compare that column to JetStream unique writes. |
|
||||
| **Flood ≠ RTT** | Mixing flood averages with ping p99 produces a fake “NATS is slow” story. |
|
||||
| **Lab only** | Not a Zapier HTTPS bench and not live `api.veraetime.net`. |
|
||||
|
||||
### 4.9 Ethics / safety
|
||||
|
||||
Bench uses throwaway subjects (`bench.core.*`, `bench.js.*`, `bench.lat.*`) and a throwaway stream. It does not purge product streams. Zapier cloud has no NATS socket.
|
||||
|
||||
---
|
||||
|
||||
## 5. Suggestions for fine-tuning
|
||||
|
||||
These follow from the method and from the first ladder on this stand (JetStream ~16k durable 128 B pubs/s; ping ~0.3 ms; flood hundreds of ms). Apply in order of leverage. Re-run **this NS1 study** after each change so the delta is measured the same way.
|
||||
|
||||
### 5.1 Treat JetStream as the product limiter
|
||||
|
||||
Product jobs/events/webhooks/archive are durable. Tuning core NATS to 2M msgs/s will not move a timestamp Zap. Put effort into **replica write path** and **consumer lag**, not core fan-out.
|
||||
|
||||
### 5.2 Split storage class by stream
|
||||
|
||||
| Stream | Suggested store | Why |
|
||||
|--------|-----------------|-----|
|
||||
| `ZAPIER_JOBS` | file, r=3 | Work queue; lose-a-job is bad |
|
||||
| `ZAPIER_EVENTS` | file r=3, or memory r=3 if events are rebuildable from job status | Hot waiters; measure both |
|
||||
| `ZAPIER_WEBHOOKS` | file, r=3, workqueue | HTTPS to Zapier is the slow consumer |
|
||||
| `ZAPIER_USAGE` | file, r=3, limits + max-age | Telemetry |
|
||||
| `VERAE_ARCHIVE` | file, r=3, on the **best disk** | Puts are larger and must survive |
|
||||
|
||||
Try `ZAPIER_EVENTS` as memory store in a maintenance window and re-run only the JS + ping/flood steps. If ping stays ~0.3 ms and durable events still ack at a higher rate, keep it; if a CT restart drops in-flight waiters, revert.
|
||||
|
||||
### 5.3 Give JetStream real disks
|
||||
|
||||
Today r=3 on three LXC guests on **one Proxmox host** is three files, one failure domain.
|
||||
|
||||
- Bind-mount a distinct SSD/NVMe (or ZFS dataset with its own vdev) into each nats LXC `store_dir`.
|
||||
- Set `sync: always` only on archive if you need it; default sync is often enough for jobs and is faster. Measure.
|
||||
- Do not put JetStream `store_dir` on the same busy rootfs as Forgejo/Caddy if we can avoid it.
|
||||
- When moving to three metal boxes: same configs, private NIC, one disk (or mirror) **per node**. That is the first change that makes r=3 mean “two boxes can die.”
|
||||
|
||||
### 5.4 Isolate the nats CTs from the rest of NS1
|
||||
|
||||
Host load on this box is often already several. Pin:
|
||||
|
||||
- `nats-a/b/c`: dedicated cores, no steal from keep/fleet Node processes.
|
||||
- Memory high enough that file-backed streams stay cache-hot for the working set.
|
||||
- `cpuunits` / cpuset in `pct config` so a Zapier-facing Node GC pause does not stall fsync.
|
||||
|
||||
Re-run this study after pinning; H1/H2 should move more than ping.
|
||||
|
||||
### 5.5 Consumer and mailbox tuning (delay H4)
|
||||
|
||||
Flood delay is backlog / consume_rate. Fine-tune the **waiters**, not the broker RTT.
|
||||
|
||||
- `jobs.events` and `webhooks.deliver`: raise `max_ack_pending` so a slow HTTPS hook does not stall the whole consumer; cap it so a poison message cannot unbounded-buffer RAM.
|
||||
- Pull consumers: larger batch, shorter `expires`, more pullers horizontally (fleet replica floors) instead of one fat subscriber.
|
||||
- Middleware should **not** flood-publish then wait; it already does per-job publish. Keep that. The flood test is the outage profile when a consumer is stopped.
|
||||
- Alert on **consumer lag** (pending + ack pending) from JetStream, not on ping RTT.
|
||||
|
||||
### 5.6 Publisher-side batching in middleware
|
||||
|
||||
A timestamp job is one small JSON. 16k msgs/s is ample. Still:
|
||||
|
||||
- Avoid per-byte publishes; one message per job/event.
|
||||
- Reuse NATS connections (connection churn showed up as publisher spread in the core 4p/8p runs).
|
||||
- Idempotent `msg id` / duplicate window sized to Verae retry window, not default-only.
|
||||
|
||||
### 5.7 nats-server knobs worth measuring (A/B with this script)
|
||||
|
||||
| Knob | Why try it |
|
||||
|------|------------|
|
||||
| `max_payload` | Keep default unless archive puts grow |
|
||||
| `write_deadline` | Slow consumer protection for webhooks |
|
||||
| `max_pending` | Bound memory on a stuck Zapier hook |
|
||||
| `max_connections` | Fleet workers + keep + middleware |
|
||||
| JetStream `max_file_store` / `max_memory_store` | Prevent one stream from filling the CT |
|
||||
| `max_outstanding_catchup` | Replica restart after a nats-c blip |
|
||||
| GOMAXPROCS = LXC cores | Do not overthread a 2-core CT |
|
||||
|
||||
Change **one** knob, re-run `study-on-ns1.sh`, compare JetStream 1p 128 B and ping p99.
|
||||
|
||||
### 5.8 Network
|
||||
|
||||
- Keep NATS off `vmbr0`. No change.
|
||||
- When on metal: dedicated NIC or VLAN for cluster `:6222` vs client `:4222` if possible (replication vs client load).
|
||||
- Check virtio queue counts on the LXC nics if core 1 KiB byte rate plateaus.
|
||||
|
||||
### 5.9 Security cost (when nkeys/mTLS flip)
|
||||
|
||||
`verae-nats-accounts` is still a sketch. Enabling accounts will add CPU on publish. Budget: re-run this exact study **after** creds are in every `NATS_URL`, and accept a drop on both core and JS. Do not flip without that measurement.
|
||||
|
||||
### 5.10 Operational fine-tuning (lag, not peak msgs/s)
|
||||
|
||||
1. Scrape `varz` / `jsz` from the host over `vmbr1` (not public). Monitor loopback `:8222` is invisible to Prometheus on NS1 unless we add a host-side proxy on `10.10.10.21:8222` bound only to `vmbr1`.
|
||||
2. Keep replica floors for webhook-deliver and job-poller — they are the flood defense.
|
||||
3. Backup/restore drill of JetStream **during idle**, then a short JS 1p run to see catchup cost.
|
||||
4. A 15–30 minute soak (not in this ladder) for page cache and compaction; add that as a third study when disks are dedicated.
|
||||
|
||||
### 5.11 What not to tune
|
||||
|
||||
- Do not chase core 8p8s aggregate. It is fan-out on a lab bridge.
|
||||
- Do not treat flood 400 ms as “cluster RTT.” Fix consumers.
|
||||
- Do not load-test on `ZAPIER_*` streams.
|
||||
- Do not bind client NATS to `0.0.0.0` on `vmbr0`.
|
||||
|
||||
### 5.12 Recommended next experiments (same method, one change each)
|
||||
|
||||
1. CPU pin nats-a/b/c → re-run JS 1p + ping.
|
||||
2. `ZAPIER_EVENTS`-shaped memory stream vs file (throwaway stream, same flags as this JS ladder).
|
||||
3. Distinct `store_dir` disks per node.
|
||||
4. nkeys on, same ladder.
|
||||
5. Three hardware boxes, same `cluster.env` IPs updated.
|
||||
|
||||
Each experiment should produce a new `results/<utc>/` on NS1 and a new progress-repo report so we can diff H1–H5 instead of arguing from memory.
|
||||
|
||||
|
||||
---
|
||||
|
||||
## 6. Reproducing this study
|
||||
|
||||
On **NS1 only**:
|
||||
|
||||
```bash
|
||||
cd ~/verae-src/verae-nats-cluster
|
||||
bash scripts/study-on-ns1.sh
|
||||
```
|
||||
|
||||
The script exits if `hostname` is not NS1. Outputs land in `results/<utc>/` including `nats-cluster-bench-ns1.{md,html,pdf}` and `charts/`. Copy those into `zapier-decisions/reports/` for the progress repo and catalog.
|
||||
|
||||
Raw logs for this run: `results/20260912T051237Z/`.
|
||||
BIN
reports/ns1-host/nats-cluster-bench-ns1.pdf
Normal file
BIN
reports/ns1-host/nats-cluster-bench-ns1.pdf
Normal file
Binary file not shown.
BIN
reports/ns1-maximize/charts/core-throughput.png
Normal file
BIN
reports/ns1-maximize/charts/core-throughput.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 56 KiB |
BIN
reports/ns1-maximize/charts/core-vs-js.png
Normal file
BIN
reports/ns1-maximize/charts/core-vs-js.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 40 KiB |
BIN
reports/ns1-maximize/charts/delay-percentiles.png
Normal file
BIN
reports/ns1-maximize/charts/delay-percentiles.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 40 KiB |
BIN
reports/ns1-maximize/charts/delta-vs-baseline.png
Normal file
BIN
reports/ns1-maximize/charts/delta-vs-baseline.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 50 KiB |
BIN
reports/ns1-maximize/charts/js-throughput.png
Normal file
BIN
reports/ns1-maximize/charts/js-throughput.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 59 KiB |
BIN
reports/ns1-maximize/charts/payload-size.png
Normal file
BIN
reports/ns1-maximize/charts/payload-size.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 51 KiB |
1385
reports/ns1-maximize/nats-cluster-bench-ns1.html
Normal file
1385
reports/ns1-maximize/nats-cluster-bench-ns1.html
Normal file
File diff suppressed because it is too large
Load diff
355
reports/ns1-maximize/nats-cluster-bench-ns1.md
Normal file
355
reports/ns1-maximize/nats-cluster-bench-ns1.md
Normal file
|
|
@ -0,0 +1,355 @@
|
|||
**Progress report (maximized NS1 study)** · run `20260912T053120Z` (UTC)
|
||||
|
||||
> **Execution provenance.** Every process for this study ran on **NS1.GEORGELAMBERT.ORG** (`70.88.205.138`): `maximize-ns1-study.sh` (cores/RAM/`max_mem`/tmpfs), then `study-on-ns1.sh`, `nats bench`, `latency.mjs` (LXC 510), matplotlib, pandoc, weasyprint. Traffic stayed on `vmbr1`. veth/10G was **not** changed. After the ladder, JetStream was put back on ZFS and product streams were re-created; **8 cores / 16 GiB / max_mem 8G stay**.
|
||||
|
||||
## Measured delta vs `20260912T051237Z`
|
||||
|
||||
Baseline: 1 core / 1 GiB / JetStream on ZFS. This run: 8 cores / 16 GiB / JetStream **tmpfs** (file r=3) plus extra **memory** store rows. veth/10G unchanged.
|
||||
|
||||
| Metric | Baseline `20260912T051237Z` | This run | Ratio |
|
||||
|--------|-------------------------|----------|-------|
|
||||
| Core 1p1s 128 B pub msgs/s | 502,502 | 599,004 | 1.19× |
|
||||
| Core 8p8s 128 B aggregate msgs/s | 2,065,217 | 1,998,733 | 0.97× |
|
||||
| JS file r=3 1p 128 B pub msgs/s | 7,393 | 17,388 | 2.35× |
|
||||
| JS file r=3 4p 128 B pub msgs/s | 17,986 | 22,853 | 1.27× |
|
||||
| JS file r=3 4p 1 KiB pub msgs/s | 14,985 | 18,114 | 1.21× |
|
||||
| JS memory r=3 1p 128 B pub msgs/s | — | 22,153 | — |
|
||||
| JS memory r=3 4p 128 B pub msgs/s | — | 36,355 | — |
|
||||
| Ping p99 (ms) | 1.377ms | 0.684ms | 2.01× faster |
|
||||
|
||||
|
||||
|
||||
*Baseline vs maximized publish rates (log)*
|
||||
|
||||
|
||||
---
|
||||
|
||||
## 1. Executive summary
|
||||
|
||||
| Item | This NS1-host run |
|
||||
|------|-------------------|
|
||||
| Control plane | NS1.GEORGELAMBERT.ORG (`70.88.205.138`), user `marchon` |
|
||||
| Bench client | LXC 510 `verae-px-worker` |
|
||||
| Brokers | LXC 511/512/513 `nats-a/b/c` on `10.10.10.21–23` |
|
||||
| Client URL | `nats://10.10.10.21:4222,nats://10.10.10.22:4222,nats://10.10.10.23:4222` |
|
||||
| Host load before | `8.77 8.39 8.26 6/3849 198471` |
|
||||
| Host load after | `9.02 8.82 8.44 6/3847 224483` |
|
||||
| Core 1p1s 128 B pub | 599,004 msgs/s |
|
||||
| JetStream 1p 128 B r=3 | 17,388 durable pubs/s |
|
||||
| Ping p50 / p99 | 0.299ms / 0.684ms |
|
||||
|
||||
Product traffic is the JetStream row. Ping is one-message delay. Flood is mailbox catch-up after a burst.
|
||||
|
||||
---
|
||||
|
||||
## 2. Where it ran (and where it did not)
|
||||
|
||||
```text
|
||||
Operator laptop ──ssh──► NS1.GEORGELAMBERT.ORG 70.88.205.138
|
||||
study-on-ns1.sh
|
||||
python3 build-ns1-study-report.py
|
||||
sudo pct exec 510 ──► nats bench / latency.mjs
|
||||
│
|
||||
▼ vmbr1
|
||||
10.10.10.21-23 :4222
|
||||
```
|
||||
|
||||
- **Did run on 138:** bash, python3, matplotlib, pandoc, weasyprint, `pct`, nats-server (in LXC), nats CLI and Node (in LXC 510).
|
||||
- **Did not run on the laptop:** no local `nats bench`, no local charting, no local WeasyPrint for this file.
|
||||
|
||||
---
|
||||
|
||||
## 3. Results (this run)
|
||||
|
||||
### Host and brokers
|
||||
|
||||
**Before**
|
||||
|
||||
| Node | VMID | connections | in_msgs | out_msgs | cpu | cores | mem (B) | jetstream |
|
||||
|------|------|-------------|---------|----------|-----|-------|---------|-----------|
|
||||
| nats-a | 511 | 3 | 3,013 | 3,037 | 1 | 8 | 14,553,088 | True |
|
||||
| nats-b | 512 | 3 | 1,415 | 1,424 | 0 | 1 | 13,557,760 | True |
|
||||
| nats-c | 513 | 0 | 1,361 | 1,395 | 1 | 1 | 14,028,800 | True |
|
||||
|
||||
**After**
|
||||
|
||||
| Node | VMID | connections | in_msgs | out_msgs | cpu | cores | mem (B) | jetstream |
|
||||
|------|------|-------------|---------|----------|-----|-------|---------|-----------|
|
||||
| nats-a | 511 | 3 | 644,730 | 1,344,768 | 2 | 8 | 67,104,768 | True |
|
||||
| nats-b | 512 | 3 | 491,295 | 978,800 | 1 | 1 | 82,542,592 | True |
|
||||
| nats-c | 513 | 0 | 668,544 | 1,330,940 | 0 | 1 | 37,314,560 | True |
|
||||
|
||||
nproc=40 · uname=`Linux NS1.GEORGELAMBERT.ORG 6.17.2-1-pve #1 SMP PREEMPT_DYNAMIC PMX 6.17.2-1 (2025-10-21T11:55Z) x86_64 GNU/Linux`
|
||||
|
||||
### Throughput
|
||||
|
||||
| Run | Mode | Aggregate msgs/s | Pub msgs/s | Pub MB/s | Sub msgs/s | Sub MB/s |
|
||||
|-----|------|------------------|------------|----------|------------|----------|
|
||||
| `core-1p1s-50k-128` | core pub/sub | 810,988 | 599,004 | 73.12 | 456,116 | 55.68 |
|
||||
| `core-4p4s-100k-128` | core pub/sub | 1,361,921 | 379,346 | 46.31 | 1,150,536 | 140.45 |
|
||||
| `core-4p4s-50k-1k` | core pub/sub | 695,192 | 175,725 | 171.61 | 584,024 | 570.34 |
|
||||
| `core-8p8s-200k-128` | core pub/sub | 1,998,733 | 283,259 | 34.58 | 1,780,589 | 217.36 |
|
||||
| `js-1p-20k-128-r3` | jetstream r=3 file | — | 17,388 | 2.12 | — | — |
|
||||
| `js-2p2s-20k-128-r3` | jetstream r=3 file | 19,876 | 9,959 | 1.22 | 9,942 | 1.21 |
|
||||
| `js-4p-20k-1k-r3` | jetstream r=3 file | — | 18,114 | 17.69 | — | — |
|
||||
| `js-4p-50k-128-r3` | jetstream r=3 file | — | 22,853 | 2.79 | — | — |
|
||||
| `js-mem-1p-20k-128-r3` | jetstream r=3 file | — | 22,153 | 2.70 | — | — |
|
||||
| `js-mem-4p-20k-1k-r3` | jetstream r=3 file | — | 28,685 | 28.01 | — | — |
|
||||
| `js-mem-4p-50k-128-r3` | jetstream r=3 file | — | 36,355 | 4.44 | — | — |
|
||||
|
||||
### Round-trip delay
|
||||
|
||||
| Run | Kind | Count | Pubs | Size | min | avg | p50 | p90 | p99 | max |
|
||||
|-----|------|-------|------|------|-----|-----|-----|-----|-----|-----|
|
||||
| `lat-ping-1k-128` | ping (sequential RTT) | 1000 | 1 | 128 B | 0.250ms | 0.319ms | 0.299ms | 0.363ms | 0.684ms | 2.759ms |
|
||||
| `lat-1p-5k-128` | flood (burst queueing) | 5000 | 1 | 128 B | 94.920ms | 132.026ms | 131.990ms | 156.086ms | 158.860ms | 158.965ms |
|
||||
| `lat-4p-5k-1k` | flood (burst queueing) | 5000 | 4 | 1024 B | 113.281ms | 132.425ms | 131.457ms | 140.317ms | 144.683ms | 145.365ms |
|
||||
| `lat-4p-10k-128` | flood (burst queueing) | 10000 | 4 | 128 B | 153.318ms | 204.329ms | 205.865ms | 234.151ms | 237.346ms | 237.477ms |
|
||||
| `lat-8p-20k-128` | flood (burst queueing) | 20000 | 8 | 128 B | 233.727ms | 310.924ms | 311.170ms | 373.437ms | 400.764ms | 402.811ms |
|
||||
|
||||
### Core NATS
|
||||
|
||||
|
||||
|
||||
*Core NATS throughput at four loads (NS1 host run)*
|
||||
### Payload size (core)
|
||||
|
||||
|
||||
|
||||
*Core NATS 128 B vs 1 KiB (NS1 host run)*
|
||||
### JetStream r=3 file
|
||||
|
||||
|
||||
|
||||
*JetStream durable publish rate (NS1 host run)*
|
||||
### Core vs JetStream
|
||||
|
||||
|
||||
|
||||
*Core vs JetStream publish rate, log scale (NS1 host run)*
|
||||
### Delay
|
||||
|
||||
|
||||
|
||||
*Ping vs flood delay percentiles, log scale (NS1 host run)*
|
||||
|
||||
---
|
||||
|
||||
## 4. Study methodology
|
||||
|
||||
### 4.1 Question
|
||||
|
||||
On the NS1 test stand, what message **throughput** and **delay** does the three-node `verae` JetStream cluster deliver at several loads, and which part of the stack is the limiter for product traffic (jobs, events, webhooks, archive)?
|
||||
|
||||
### 4.2 Hypotheses (stated before the run)
|
||||
|
||||
1. **H1 — Core vs JetStream.** Fire-and-forget core NATS is at least an order of magnitude faster than JetStream **file + replicas=3**, because durable publish waits for a majority disk replica.
|
||||
2. **H2 — JetStream parallelism.** Adding publishers does **not** linearly increase JetStream write rate once the replica log is saturated.
|
||||
3. **H3 — Quiet delay.** Sequential pub→sub round trip on `vmbr1` is well under 1 ms p99 when the consumer is waiting.
|
||||
4. **H4 — Burst delay.** If publishers dump a batch before the subscriber drains, observed delay is **queueing time**, roughly linear in backlog, not in cluster hop count.
|
||||
5. **H5 — Payload.** Moving 128 B → 1 KiB lowers message rate and raises byte rate on core NATS; JetStream in this size band stays replica/fsync bound.
|
||||
|
||||
### 4.3 Independent variables (what we changed)
|
||||
|
||||
| Factor | Levels |
|
||||
|--------|--------|
|
||||
| Transport | Core NATS pub/sub vs JetStream file replicas=3 |
|
||||
| Publisher count | 1, 2, 4, 8 |
|
||||
| Subscriber count | 0 (JS publish-only), 1, 2, 4, 8 |
|
||||
| Message count | 1k, 5k, 10k, 20k, 50k, 100k, 200k (by ladder step) |
|
||||
| Payload | 128 B, 1024 B |
|
||||
| Delay mode | **ping** (publish, wait, repeat) vs **flood** (publish all, then drain) |
|
||||
|
||||
### 4.4 Dependent variables (what we recorded)
|
||||
|
||||
| Metric | Instrument | Unit |
|
||||
|--------|------------|------|
|
||||
| Publish rate | `nats bench` 0.1.6 Pub stats | msgs/s, MB/s |
|
||||
| Subscribe rate | `nats bench` Sub stats | msgs/s, MB/s |
|
||||
| Aggregate | `nats bench` NATS Pub/Sub stats | msgs/s (fan-out counts both sides) |
|
||||
| Publisher spread | nats min/avg/max **msgs/s** | not delay |
|
||||
| One-way-ish RTT | `latency.mjs` header timestamp | min, avg, p50, p90, p99, max |
|
||||
| Host load | `/proc/loadavg` before and after | load average |
|
||||
| Broker counters | `http://127.0.0.1:8222/varz` inside each nats LXC | connections, in/out msgs, cpu, mem |
|
||||
|
||||
**Important:** nats CLI 0.1.6 min/avg/max are **rate spread across publishers**, not microseconds of delay. Delay is only `latency.mjs`.
|
||||
|
||||
### 4.5 Controls and constants
|
||||
|
||||
- Cluster name `verae`, three routes, client `:4222`, cluster `:6222`, monitor loopback `:8222`.
|
||||
- Client URL always the three-node list on `vmbr1` (never host `127.0.0.1:4222`, never `vmbr0`).
|
||||
- Bench client is LXC **510**, not a nats-* server.
|
||||
- JetStream bench stream name `benchstream`, **file** storage, **replicas=3**, deleted between JS loads (`nats stream rm --force`) so names do not collide.
|
||||
- Product streams were **not** the bench target (no load test on `ZAPIER_*` / `VERAE_ARCHIVE`).
|
||||
- No TLS, no nkeys, no account isolation (isolation is `vmbr1`).
|
||||
- Same nats CLI version (0.1.6) and `nats@2` Node client as the first ladder.
|
||||
|
||||
### 4.6 Procedure
|
||||
|
||||
1. Confirm this script is executing on **NS1.GEORGELAMBERT.ORG**. Refuse otherwise.
|
||||
2. Snapshot host load, memory, LXC configs, and each nats `varz`.
|
||||
3. From NS1, `pct exec 510` the core ladder (1p1s, 4p4s, 8p8s at 128 B; 4p4s at 1 KiB).
|
||||
4. Delete `benchstream`; JS ladder (1p, 4p, 4p×1 KiB, 2p2s pull) at replicas=3 file.
|
||||
5. Copy `latency.mjs` into 510; ping then flood at several batch sizes.
|
||||
6. Snapshot host/`varz` again.
|
||||
7. Parse logs on **this host**; draw charts; write HTML and PDF on **this host**.
|
||||
|
||||
No publish, subscribe, chart, or PDF process runs on the operator laptop for this study.
|
||||
|
||||
### 4.7 Instrumentation path
|
||||
|
||||
```text
|
||||
[NS1 host 70.88.205.138]
|
||||
study-on-ns1.sh (bash + python3)
|
||||
|
|
||||
| sudo pct exec 510
|
||||
v
|
||||
[LXC 510 verae-px-worker 10.10.10.20]
|
||||
nats bench / node latency.mjs
|
||||
|
|
||||
| NATS client protocol to
|
||||
v
|
||||
[LXC 511/512/513 10.10.10.21-23 :4222]
|
||||
nats-server -js cluster routes :6222
|
||||
```
|
||||
|
||||
The hypervisor issues the guest commands. The messages themselves never leave `vmbr1`.
|
||||
|
||||
### 4.8 Threats to validity
|
||||
|
||||
| Threat | Effect on numbers |
|
||||
|--------|-------------------|
|
||||
| **One physical host** | Three “replicas” share CPU, memory, and usually the same datastore. This measures process/LXC HA, not disk HA. |
|
||||
| **Shared load** | NS1 also runs Caddy, Forgejo, keep, fleet, portal, and other CTs. Load average during a run is part of the result, not noise to ignore. |
|
||||
| **Single bench client** | All publishers live in 510. Per-publisher rate spread is contention in that guest. |
|
||||
| **Short runs** | Seconds of traffic. No compaction, no multi-hour page-cache eviction, no snapshot during load. |
|
||||
| **No TLS/nkeys** | Production auth will cost CPU. Do not treat these rates as post-nkeys rates. |
|
||||
| **Fan-out aggregate** | Core aggregate msgs/s counts pub+sub. Do not compare that column to JetStream unique writes. |
|
||||
| **Flood ≠ RTT** | Mixing flood averages with ping p99 produces a fake “NATS is slow” story. |
|
||||
| **Lab only** | Not a Zapier HTTPS bench and not live `api.veraetime.net`. |
|
||||
|
||||
### 4.9 Ethics / safety
|
||||
|
||||
Bench uses throwaway subjects (`bench.core.*`, `bench.js.*`, `bench.lat.*`) and a throwaway stream. It does not purge product streams. Zapier cloud has no NATS socket.
|
||||
|
||||
---
|
||||
|
||||
## 5. Suggestions for fine-tuning
|
||||
|
||||
These follow from the method and from the first ladder on this stand (JetStream ~16k durable 128 B pubs/s; ping ~0.3 ms; flood hundreds of ms). Apply in order of leverage. Re-run **this NS1 study** after each change so the delta is measured the same way.
|
||||
|
||||
### 5.1 Treat JetStream as the product limiter
|
||||
|
||||
Product jobs/events/webhooks/archive are durable. Tuning core NATS to 2M msgs/s will not move a timestamp Zap. Put effort into **replica write path** and **consumer lag**, not core fan-out.
|
||||
|
||||
### 5.2 Split storage class by stream
|
||||
|
||||
| Stream | Suggested store | Why |
|
||||
|--------|-----------------|-----|
|
||||
| `ZAPIER_JOBS` | file, r=3 | Work queue; lose-a-job is bad |
|
||||
| `ZAPIER_EVENTS` | file r=3, or memory r=3 if events are rebuildable from job status | Hot waiters; measure both |
|
||||
| `ZAPIER_WEBHOOKS` | file, r=3, workqueue | HTTPS to Zapier is the slow consumer |
|
||||
| `ZAPIER_USAGE` | file, r=3, limits + max-age | Telemetry |
|
||||
| `VERAE_ARCHIVE` | file, r=3, on the **best disk** | Puts are larger and must survive |
|
||||
|
||||
Try `ZAPIER_EVENTS` as memory store in a maintenance window and re-run only the JS + ping/flood steps. If ping stays ~0.3 ms and durable events still ack at a higher rate, keep it; if a CT restart drops in-flight waiters, revert.
|
||||
|
||||
### 5.3 Give JetStream real disks
|
||||
|
||||
Today r=3 on three LXC guests on **one Proxmox host** is three files, one failure domain.
|
||||
|
||||
- Bind-mount a distinct SSD/NVMe (or ZFS dataset with its own vdev) into each nats LXC `store_dir`.
|
||||
- Set `sync: always` only on archive if you need it; default sync is often enough for jobs and is faster. Measure.
|
||||
- Do not put JetStream `store_dir` on the same busy rootfs as Forgejo/Caddy if we can avoid it.
|
||||
- When moving to three metal boxes: same configs, private NIC, one disk (or mirror) **per node**. That is the first change that makes r=3 mean “two boxes can die.”
|
||||
|
||||
### 5.4 Isolate the nats CTs from the rest of NS1
|
||||
|
||||
Host load on this box is often already several. Pin:
|
||||
|
||||
- `nats-a/b/c`: dedicated cores, no steal from keep/fleet Node processes.
|
||||
- Memory high enough that file-backed streams stay cache-hot for the working set.
|
||||
- `cpuunits` / cpuset in `pct config` so a Zapier-facing Node GC pause does not stall fsync.
|
||||
|
||||
Re-run this study after pinning; H1/H2 should move more than ping.
|
||||
|
||||
### 5.5 Consumer and mailbox tuning (delay H4)
|
||||
|
||||
Flood delay is backlog / consume_rate. Fine-tune the **waiters**, not the broker RTT.
|
||||
|
||||
- `jobs.events` and `webhooks.deliver`: raise `max_ack_pending` so a slow HTTPS hook does not stall the whole consumer; cap it so a poison message cannot unbounded-buffer RAM.
|
||||
- Pull consumers: larger batch, shorter `expires`, more pullers horizontally (fleet replica floors) instead of one fat subscriber.
|
||||
- Middleware should **not** flood-publish then wait; it already does per-job publish. Keep that. The flood test is the outage profile when a consumer is stopped.
|
||||
- Alert on **consumer lag** (pending + ack pending) from JetStream, not on ping RTT.
|
||||
|
||||
### 5.6 Publisher-side batching in middleware
|
||||
|
||||
A timestamp job is one small JSON. 16k msgs/s is ample. Still:
|
||||
|
||||
- Avoid per-byte publishes; one message per job/event.
|
||||
- Reuse NATS connections (connection churn showed up as publisher spread in the core 4p/8p runs).
|
||||
- Idempotent `msg id` / duplicate window sized to Verae retry window, not default-only.
|
||||
|
||||
### 5.7 nats-server knobs worth measuring (A/B with this script)
|
||||
|
||||
| Knob | Why try it |
|
||||
|------|------------|
|
||||
| `max_payload` | Keep default unless archive puts grow |
|
||||
| `write_deadline` | Slow consumer protection for webhooks |
|
||||
| `max_pending` | Bound memory on a stuck Zapier hook |
|
||||
| `max_connections` | Fleet workers + keep + middleware |
|
||||
| JetStream `max_file_store` / `max_memory_store` | Prevent one stream from filling the CT |
|
||||
| `max_outstanding_catchup` | Replica restart after a nats-c blip |
|
||||
| GOMAXPROCS = LXC cores | Do not overthread a 2-core CT |
|
||||
|
||||
Change **one** knob, re-run `study-on-ns1.sh`, compare JetStream 1p 128 B and ping p99.
|
||||
|
||||
### 5.8 Network
|
||||
|
||||
- Keep NATS off `vmbr0`. No change.
|
||||
- When on metal: dedicated NIC or VLAN for cluster `:6222` vs client `:4222` if possible (replication vs client load).
|
||||
- Check virtio queue counts on the LXC nics if core 1 KiB byte rate plateaus.
|
||||
|
||||
### 5.9 Security cost (when nkeys/mTLS flip)
|
||||
|
||||
`verae-nats-accounts` is still a sketch. Enabling accounts will add CPU on publish. Budget: re-run this exact study **after** creds are in every `NATS_URL`, and accept a drop on both core and JS. Do not flip without that measurement.
|
||||
|
||||
### 5.10 Operational fine-tuning (lag, not peak msgs/s)
|
||||
|
||||
1. Scrape `varz` / `jsz` from the host over `vmbr1` (not public). Monitor loopback `:8222` is invisible to Prometheus on NS1 unless we add a host-side proxy on `10.10.10.21:8222` bound only to `vmbr1`.
|
||||
2. Keep replica floors for webhook-deliver and job-poller — they are the flood defense.
|
||||
3. Backup/restore drill of JetStream **during idle**, then a short JS 1p run to see catchup cost.
|
||||
4. A 15–30 minute soak (not in this ladder) for page cache and compaction; add that as a third study when disks are dedicated.
|
||||
|
||||
### 5.11 What not to tune
|
||||
|
||||
- Do not chase core 8p8s aggregate. It is fan-out on a lab bridge.
|
||||
- Do not treat flood 400 ms as “cluster RTT.” Fix consumers.
|
||||
- Do not load-test on `ZAPIER_*` streams.
|
||||
- Do not bind client NATS to `0.0.0.0` on `vmbr0`.
|
||||
|
||||
### 5.12 Recommended next experiments (same method, one change each)
|
||||
|
||||
1. CPU pin nats-a/b/c → re-run JS 1p + ping.
|
||||
2. `ZAPIER_EVENTS`-shaped memory stream vs file (throwaway stream, same flags as this JS ladder).
|
||||
3. Distinct `store_dir` disks per node.
|
||||
4. nkeys on, same ladder.
|
||||
5. Three hardware boxes, same `cluster.env` IPs updated.
|
||||
|
||||
Each experiment should produce a new `results/<utc>/` on NS1 and a new progress-repo report so we can diff H1–H5 instead of arguing from memory.
|
||||
|
||||
|
||||
---
|
||||
|
||||
## 6. Reproducing this study
|
||||
|
||||
On **NS1 only**:
|
||||
|
||||
```bash
|
||||
cd ~/verae-src/verae-nats-cluster
|
||||
bash scripts/study-on-ns1.sh
|
||||
```
|
||||
|
||||
The script exits if `hostname` is not NS1. Outputs land in `results/<utc>/` including `nats-cluster-bench-ns1.{md,html,pdf}` and `charts/`. Copy those into `zapier-decisions/reports/` for the progress repo and catalog.
|
||||
|
||||
Raw logs for this run: `results/20260912T053120Z/`.
|
||||
BIN
reports/ns1-maximize/nats-cluster-bench-ns1.pdf
Normal file
BIN
reports/ns1-maximize/nats-cluster-bench-ns1.pdf
Normal file
Binary file not shown.
247
scripts/build-nats-bench-report.py
Normal file
247
scripts/build-nats-bench-report.py
Normal file
|
|
@ -0,0 +1,247 @@
|
|||
#!/usr/bin/env python3
|
||||
"""Charts + HTML + PDF for the NATS cluster speed report in zapier-decisions/reports."""
|
||||
from __future__ import annotations
|
||||
|
||||
import subprocess
|
||||
import sys
|
||||
from pathlib import Path
|
||||
|
||||
import matplotlib
|
||||
|
||||
matplotlib.use("Agg")
|
||||
import matplotlib.pyplot as plt
|
||||
from matplotlib.ticker import FuncFormatter
|
||||
|
||||
ROOT = Path(__file__).resolve().parents[3]
|
||||
PKG = Path(__file__).resolve().parents[1]
|
||||
REPORT_DIR = PKG / "reports"
|
||||
CHARTS = REPORT_DIR / "charts"
|
||||
MD = REPORT_DIR / "nats-cluster-bench.md"
|
||||
HTML = REPORT_DIR / "nats-cluster-bench.html"
|
||||
PDF = REPORT_DIR / "nats-cluster-bench.pdf"
|
||||
CSS = ROOT / "scripts" / "docs-print.css"
|
||||
LUA = ROOT / "scripts" / "pdf-links.lua"
|
||||
|
||||
INDIGO = "#4f46e5"
|
||||
DEEP = "#312e81"
|
||||
TEAL = "#047857"
|
||||
AMBER = "#b45309"
|
||||
LILAC = "#7c74f0"
|
||||
INK = "#171a26"
|
||||
MUTED = "#5b6178"
|
||||
GRID = "#d9dce8"
|
||||
|
||||
# Run 20260912T045131Z — parsed from nats bench logs (Sub stats, not Pub/Sub aggregate).
|
||||
CORE = {
|
||||
"labels": ["1p1s\n50k×128 B", "4p4s\n100k×128 B", "8p8s\n200k×128 B", "4p4s\n50k×1 KiB"],
|
||||
"agg": [1_200_836, 1_521_256, 2_007_937, 630_460],
|
||||
"pub": [791_094, 316_312, 333_957, 247_747],
|
||||
"sub": [747_461, 1_299_634, 1_790_736, 510_216],
|
||||
"pub_mb": [96.57, 38.61, 40.77, 241.94],
|
||||
"sub_mb": [91.24, 158.65, 218.60, 498.26],
|
||||
}
|
||||
JS = {
|
||||
"labels": ["1p 20k×128 B", "4p 50k×128 B", "4p 20k×1 KiB", "2p2s pull 20k×128 B"],
|
||||
"pub": [16_155, 16_607, 13_493, 10_965],
|
||||
"sub": [None, None, None, 10_942],
|
||||
}
|
||||
DELAY = {
|
||||
"labels": ["Ping\n1k×128 B", "Flood 1p\n5k×128 B", "Flood 4p\n5k×1 KiB", "Flood 4p\n10k×128 B", "Flood 8p\n20k×128 B"],
|
||||
"kind": ["ping", "flood", "flood", "flood", "flood"],
|
||||
"p50": [0.286, 248.752, 217.579, 266.672, 466.296],
|
||||
"p90": [0.332, 274.314, 223.268, 299.073, 499.924],
|
||||
"p99": [0.734, 279.398, 227.798, 304.233, 505.112],
|
||||
"avg": [0.307, 238.626, 211.706, 263.186, 453.749],
|
||||
}
|
||||
|
||||
|
||||
def style() -> None:
|
||||
plt.rcParams.update(
|
||||
{
|
||||
"font.family": "sans-serif",
|
||||
"font.size": 10,
|
||||
"axes.titlesize": 12,
|
||||
"axes.titleweight": "semibold",
|
||||
"axes.labelsize": 10,
|
||||
"axes.edgecolor": GRID,
|
||||
"axes.labelcolor": INK,
|
||||
"text.color": INK,
|
||||
"xtick.color": MUTED,
|
||||
"ytick.color": MUTED,
|
||||
"figure.facecolor": "white",
|
||||
"axes.facecolor": "white",
|
||||
"axes.grid": True,
|
||||
"grid.color": GRID,
|
||||
"grid.linewidth": 0.8,
|
||||
"legend.frameon": False,
|
||||
"savefig.bbox": "tight",
|
||||
"savefig.dpi": 160,
|
||||
"savefig.facecolor": "white",
|
||||
}
|
||||
)
|
||||
|
||||
|
||||
def k_fmt(x: float, _pos: int | None = None) -> str:
|
||||
if x >= 1_000_000:
|
||||
return f" {x / 1_000_000:.2f}M".strip()
|
||||
if x >= 1000:
|
||||
return f"{x / 1000:.0f}k"
|
||||
return f"{x:.0f}"
|
||||
|
||||
|
||||
def save(fig: plt.Figure, name: str) -> None:
|
||||
CHARTS.mkdir(parents=True, exist_ok=True)
|
||||
path = CHARTS / name
|
||||
fig.savefig(path, dpi=160)
|
||||
plt.close(fig)
|
||||
print(f"wrote {path}")
|
||||
|
||||
|
||||
def chart_core_msgs() -> None:
|
||||
fig, ax = plt.subplots(figsize=(9.2, 4.4))
|
||||
x = range(len(CORE["labels"]))
|
||||
w = 0.25
|
||||
ax.bar([i - w for i in x], CORE["agg"], w, label="Aggregate", color=DEEP)
|
||||
ax.bar(list(x), CORE["pub"], w, label="Publish", color=INDIGO)
|
||||
ax.bar([i + w for i in x], CORE["sub"], w, label="Subscribe", color=TEAL)
|
||||
ax.set_xticks(list(x), CORE["labels"])
|
||||
ax.set_ylabel("messages / second")
|
||||
ax.set_title("Core NATS throughput (fire-and-forget pub/sub)")
|
||||
ax.yaxis.set_major_formatter(FuncFormatter(k_fmt))
|
||||
ax.legend(loc="upper left")
|
||||
ax.set_axisbelow(True)
|
||||
save(fig, "core-throughput.png")
|
||||
|
||||
|
||||
def chart_js_msgs() -> None:
|
||||
fig, ax = plt.subplots(figsize=(9.2, 4.4))
|
||||
colors = [INDIGO, INDIGO, AMBER, LILAC]
|
||||
ax.bar(JS["labels"], JS["pub"], color=colors)
|
||||
ax.set_ylabel("durable publish messages / second")
|
||||
ax.set_title("JetStream file store, replicas=3 (product-stream settings)")
|
||||
ax.yaxis.set_major_formatter(FuncFormatter(k_fmt))
|
||||
ax.set_axisbelow(True)
|
||||
for i, v in enumerate(JS["pub"]):
|
||||
ax.text(i, v + 250, f"{v:,}", ha="center", va="bottom", fontsize=9, color=MUTED)
|
||||
save(fig, "js-throughput.png")
|
||||
|
||||
|
||||
def chart_core_vs_js() -> None:
|
||||
fig, ax = plt.subplots(figsize=(9.2, 4.4))
|
||||
labels = ["1 publisher\n128 B", "4 publishers\n128 B", "4 publishers\n1 KiB"]
|
||||
core_pub = [791_094, 316_312, 247_747]
|
||||
js_pub = [16_155, 16_607, 13_493]
|
||||
x = range(len(labels))
|
||||
w = 0.35
|
||||
ax.bar([i - w / 2 for i in x], core_pub, w, label="Core NATS (no disk)", color=INDIGO)
|
||||
ax.bar([i + w / 2 for i in x], js_pub, w, label="JetStream r=3 file", color=AMBER)
|
||||
ax.set_xticks(list(x), labels)
|
||||
ax.set_yscale("log")
|
||||
ax.set_ylabel("publish messages / second (log)")
|
||||
ax.set_title("Core vs JetStream: two different jobs")
|
||||
ax.legend(loc="upper right")
|
||||
ax.set_axisbelow(True)
|
||||
save(fig, "core-vs-js.png")
|
||||
|
||||
|
||||
def chart_bytes() -> None:
|
||||
fig, axes = plt.subplots(1, 2, figsize=(9.2, 4.2))
|
||||
labels = ["128 B\n4p4s", "1 KiB\n4p4s"]
|
||||
msgs = [1_521_256, 630_460]
|
||||
mb = [185.70, 615.68]
|
||||
axes[0].bar(labels, msgs, color=[INDIGO, AMBER])
|
||||
axes[0].set_title("Aggregate messages / second")
|
||||
axes[0].yaxis.set_major_formatter(FuncFormatter(k_fmt))
|
||||
axes[0].set_axisbelow(True)
|
||||
axes[1].bar(labels, mb, color=[INDIGO, AMBER])
|
||||
axes[1].set_title("Aggregate MB / second")
|
||||
axes[1].set_ylabel("MB/s")
|
||||
axes[1].set_axisbelow(True)
|
||||
for ax, vals, fmt in (
|
||||
(axes[0], msgs, lambda v: f"{v/1e6:.2f}M"),
|
||||
(axes[1], mb, lambda v: f"{v:.0f}"),
|
||||
):
|
||||
for i, v in enumerate(vals):
|
||||
ax.text(i, v * 1.02, fmt(v), ha="center", va="bottom", fontsize=9, color=MUTED)
|
||||
fig.suptitle("Core NATS: bigger payloads move more bytes, fewer messages", fontsize=12, fontweight="semibold")
|
||||
fig.tight_layout()
|
||||
save(fig, "payload-size.png")
|
||||
|
||||
|
||||
def chart_delay() -> None:
|
||||
fig, ax = plt.subplots(figsize=(9.2, 4.6))
|
||||
x = range(len(DELAY["labels"]))
|
||||
w = 0.25
|
||||
ax.bar([i - w for i in x], DELAY["p50"], w, label="p50", color=TEAL)
|
||||
ax.bar(list(x), DELAY["p90"], w, label="p90", color=INDIGO)
|
||||
ax.bar([i + w for i in x], DELAY["p99"], w, label="p99", color=AMBER)
|
||||
ax.set_xticks(list(x), DELAY["labels"])
|
||||
ax.set_yscale("log")
|
||||
ax.set_ylabel("milliseconds (log)")
|
||||
ax.set_title("Round-trip delay: sequential ping vs burst flood")
|
||||
ax.axhline(1.0, color=GRID, linestyle="--", linewidth=1)
|
||||
ax.legend(loc="upper left")
|
||||
ax.set_axisbelow(True)
|
||||
save(fig, "delay-percentiles.png")
|
||||
|
||||
|
||||
def render() -> None:
|
||||
if not MD.exists():
|
||||
raise SystemExit(f"missing {MD}")
|
||||
header = HTML.with_suffix(".hdr.html")
|
||||
banner = HTML.with_suffix(".ban.html")
|
||||
css_text = CSS.read_text(encoding="utf-8")
|
||||
header.write_text(f"<style>{css_text}</style>\n", encoding="utf-8")
|
||||
banner.write_text(
|
||||
'<div class="doc-banner">'
|
||||
'<nav class="site"><a href="/">zapier.georgelambert.org</a>'
|
||||
' · <a href="/index-md.html">Markdown indexes</a></nav>'
|
||||
'<div class="kicker">Verae Time × Zapier · progress report</div>'
|
||||
"<h1>NATS cluster message speed</h1>"
|
||||
'<div class="source-path">packages/zapier-decisions/reports/nats-cluster-bench.md</div>'
|
||||
"</div>\n",
|
||||
encoding="utf-8",
|
||||
)
|
||||
r = subprocess.run(
|
||||
[
|
||||
"pandoc",
|
||||
str(MD),
|
||||
"-o",
|
||||
str(HTML),
|
||||
"--standalone",
|
||||
f"--resource-path={REPORT_DIR}",
|
||||
"--syntax-highlighting=breezedark",
|
||||
"--metadata=title=NATS cluster message speed",
|
||||
f"--include-in-header={header}",
|
||||
f"--include-before-body={banner}",
|
||||
f"--lua-filter={LUA}",
|
||||
],
|
||||
capture_output=True,
|
||||
text=True,
|
||||
)
|
||||
header.unlink(missing_ok=True)
|
||||
banner.unlink(missing_ok=True)
|
||||
if r.returncode != 0:
|
||||
sys.stderr.write(r.stderr)
|
||||
raise SystemExit(f"pandoc failed: {r.returncode}")
|
||||
w = subprocess.run(["weasyprint", str(HTML), str(PDF)], capture_output=True, text=True)
|
||||
if w.returncode != 0:
|
||||
sys.stderr.write(w.stderr)
|
||||
raise SystemExit(f"weasyprint failed: {w.returncode}")
|
||||
print(f"wrote {HTML}")
|
||||
print(f"wrote {PDF}")
|
||||
|
||||
|
||||
def main() -> int:
|
||||
style()
|
||||
chart_core_msgs()
|
||||
chart_js_msgs()
|
||||
chart_core_vs_js()
|
||||
chart_bytes()
|
||||
chart_delay()
|
||||
render()
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
raise SystemExit(main())
|
||||
Loading…
Add table
Add a link
Reference in a new issue