Snapshot of verae-nats-cluster from zapier monorepo (NATS cluster bench)

results/20260912T045131Z/BENCH.md

@@ -0,0 +1,49 @@
+# NATS cluster message speed
+
+Run **`20260912T045131Z`** (UTC). Client: LXC **510** `verae-px-worker` (`10.10.10.20`), not a nats-* server. Servers: `nats-a/b/c` on `10.10.10.21–23` (`vmbr1` only).
+
+Client URL:
+
+```text
+nats://10.10.10.21:4222,nats://10.10.10.22:4222,nats://10.10.10.23:4222
+```
+
+## Method
+
+- **Core NATS** is fire-and-forget pub/sub (`nats bench`). No disk, no replica ack.
+- **JetStream** uses **file** storage and **replicas=3** (same as product streams). The unique stream `benchstream` is deleted between JS loads.
+- Throughput is **msgs/sec** from nats CLI **0.1.6** (`--no-progress --csv`). Its min/avg/max are publisher **rate spread**, not delay.
+- **Ping** delay: one publisher, sequential publish-then-wait. This is one-message round-trip through the cluster.
+- **Flood** delay: N publishers dump the whole batch, then the subscriber drains. This is **queueing under burst**, not wire RTT.
+- Probe: `scripts/latency.mjs` (two connections, header timestamp).
+
+## 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 | 1,200,836 | 791,094 | 96.57 | 747,461 | 91.24 |
+| `core-4p4s-100k-128` | core pub/sub | 1,521,256 | 316,312 | 38.61 | 1,299,634 | 158.65 |
+| `core-4p4s-50k-1k` | core pub/sub | 630,460 | 247,747 | 241.94 | 510,216 | 498.26 |
+| `core-8p8s-200k-128` | core pub/sub | 2,007,937 | 333,957 | 40.77 | 1,790,736 | 218.60 |
+| `js-1p-20k-128-r3` | jetstream r=3 file | — | 16,155 | 1.97 | — | — |
+| `js-2p2s-20k-128-r3` | jetstream r=3 file | 21,861 | 10,965 | 1.34 | 10,942 | 1.34 |
+| `js-4p-20k-1k-r3` | jetstream r=3 file | — | 13,493 | 13.18 | — | — |
+| `js-4p-50k-128-r3` | jetstream r=3 file | — | 16,607 | 2.03 | — | — |
+
+## 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 | 0.254ms | 0.307ms | 0.286ms | 0.332ms | 0.734ms | 2.763ms |
+| `lat-1p-5k-128` | flood (burst queueing) | 5000 | 1 | 128 B | 149.279ms | 238.626ms | 248.752ms | 274.314ms | 279.398ms | 279.740ms |
+| `lat-4p-5k-1k` | flood (burst queueing) | 5000 | 4 | 1024 B | 155.101ms | 211.706ms | 217.579ms | 223.268ms | 227.798ms | 228.370ms |
+| `lat-4p-10k-128` | flood (burst queueing) | 10000 | 4 | 128 B | 174.174ms | 263.186ms | 266.672ms | 299.073ms | 304.233ms | 304.475ms |
+| `lat-8p-20k-128` | flood (burst queueing) | 20000 | 8 | 128 B | 304.586ms | 453.749ms | 466.296ms | 499.924ms | 505.112ms | 505.620ms |
+
+## What the numbers mean
+
+Product job/event/archive traffic is **JetStream r=3 file**. On this three-LXC stand that is about **16k durable 128 B pubs/s** (about **13k** at 1 KiB). Core NATS is an upper bound for non-durable fan-out: about **0.7–2.0M msgs/s** aggregate at 128 B, or **~630k msgs/s (~616 MB/s)** at 1 KiB with 4 publishers.
+
+A quiet request-reply is **~0.3 ms** average, **p99 < 1 ms**. Flood rows in the **150–500 ms** band are the subscriber catching up after a burst, which is what a job-events mailbox sees if publishers outrun consumers.
+
+Re-run on NS1: `bash scripts/bench.sh`. Raw logs/CSVs are under `results/<utc>/`.

results/20260912T045131Z/core-1p1s-50k-128.csv

@@ -0,0 +1,3 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+8e1ExxrZ9OtHTkwXsOfzes,S0,50000,6400000,747461,95675134.125326,0.066893
+8e1ExxrZ9OtHTkwXsOfzes,P0,50000,6400000,791094,101260059.613379,0.063204

results/20260912T045131Z/core-1p1s-50k-128.txt

@@ -0,0 +1,7 @@
+=== core-1p1s-50k-128 ===
+
+NATS Pub/Sub stats: 1,200,836 msgs/sec ~ 146.59 MB/sec
+ Pub stats: 791,094 msgs/sec ~ 96.57 MB/sec
+ Sub stats: 747,461 msgs/sec ~ 91.24 MB/sec
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/core-4p4s-100k-128.csv

@@ -0,0 +1,9 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+d1csC8CbCBLYlUMAUVZxpb,S0,100000,12800000,377317,48296660.364795,0.265029
+d1csC8CbCBLYlUMAUVZxpb,S1,100000,12800000,351445,44985056.104940,0.284539
+d1csC8CbCBLYlUMAUVZxpb,S2,100000,12800000,372973,47740617.289389,0.268116
+d1csC8CbCBLYlUMAUVZxpb,S3,100000,12800000,324908,41588310.877432,0.307779
+d1csC8CbCBLYlUMAUVZxpb,P0,25000,3200000,524453,67129988.054428,0.047669
+d1csC8CbCBLYlUMAUVZxpb,P1,25000,3200000,324337,41515233.366208,0.077080
+d1csC8CbCBLYlUMAUVZxpb,P2,25000,3200000,103170,13205778.771206,0.242318
+d1csC8CbCBLYlUMAUVZxpb,P3,25000,3200000,79260,10145297.784464,0.315417

results/20260912T045131Z/core-4p4s-100k-128.txt

@@ -0,0 +1,17 @@
+=== core-4p4s-100k-128 ===
+
+NATS Pub/Sub stats: 1,521,256 msgs/sec ~ 185.70 MB/sec
+ Pub stats: 316,312 msgs/sec ~ 38.61 MB/sec
+  [1] 524,453 msgs/sec ~ 64.02 MB/sec (25000 msgs)
+  [2] 324,337 msgs/sec ~ 39.59 MB/sec (25000 msgs)
+  [3] 103,170 msgs/sec ~ 12.59 MB/sec (25000 msgs)
+  [4] 79,260 msgs/sec ~ 9.68 MB/sec (25000 msgs)
+  min 79,260 | avg 257,805 | max 524,453 | stddev 181,189 msgs
+ Sub stats: 1,299,634 msgs/sec ~ 158.65 MB/sec
+  [1] 377,317 msgs/sec ~ 46.06 MB/sec (100000 msgs)
+  [2] 351,445 msgs/sec ~ 42.90 MB/sec (100000 msgs)
+  [3] 372,973 msgs/sec ~ 45.53 MB/sec (100000 msgs)
+  [4] 324,908 msgs/sec ~ 39.66 MB/sec (100000 msgs)
+  min 324,908 | avg 356,660 | max 377,317 | stddev 20,785 msgs
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/core-4p4s-50k-1k.csv

@@ -0,0 +1,9 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+LXVQ7kvd26BIwiMRRfbr7Z,S0,50000,51200000,169213,173274762.582948,0.295484
+LXVQ7kvd26BIwiMRRfbr7Z,S1,50000,51200000,150273,153880103.181538,0.332727
+LXVQ7kvd26BIwiMRRfbr7Z,S2,50000,51200000,142138,145550108.197459,0.351769
+LXVQ7kvd26BIwiMRRfbr7Z,S3,50000,51200000,132134,135306220.651698,0.378401
+LXVQ7kvd26BIwiMRRfbr7Z,P0,12500,12800000,176262,180492467.210335,0.070917
+LXVQ7kvd26BIwiMRRfbr7Z,P1,12500,12800000,132211,135384883.941361,0.094545
+LXVQ7kvd26BIwiMRRfbr7Z,P2,12500,12800000,70678,72375041.084851,0.176857
+LXVQ7kvd26BIwiMRRfbr7Z,P3,12500,12800000,61936,63423297.033934,0.201819

results/20260912T045131Z/core-4p4s-50k-1k.txt

@@ -0,0 +1,17 @@
+=== core-4p4s-50k-1k ===
+
+NATS Pub/Sub stats: 630,460 msgs/sec ~ 615.68 MB/sec
+ Pub stats: 247,747 msgs/sec ~ 241.94 MB/sec
+  [1] 176,262 msgs/sec ~ 172.13 MB/sec (12500 msgs)
+  [2] 132,211 msgs/sec ~ 129.11 MB/sec (12500 msgs)
+  [3] 70,678 msgs/sec ~ 69.02 MB/sec (12500 msgs)
+  [4] 61,936 msgs/sec ~ 60.49 MB/sec (12500 msgs)
+  min 61,936 | avg 110,271 | max 176,262 | stddev 46,744 msgs
+ Sub stats: 510,216 msgs/sec ~ 498.26 MB/sec
+  [1] 169,213 msgs/sec ~ 165.25 MB/sec (50000 msgs)
+  [2] 150,273 msgs/sec ~ 146.75 MB/sec (50000 msgs)
+  [3] 142,138 msgs/sec ~ 138.81 MB/sec (50000 msgs)
+  [4] 132,134 msgs/sec ~ 129.04 MB/sec (50000 msgs)
+  min 132,134 | avg 148,439 | max 169,213 | stddev 13,605 msgs
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/core-8p8s-200k-128.csv

@@ -0,0 +1,17 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+HuvulruPjjaqnoHWeFCH2I,S0,200000,25600000,349350,44716843.071789,0.572491
+HuvulruPjjaqnoHWeFCH2I,S1,200000,25600000,248162,31764858.924451,0.805922
+HuvulruPjjaqnoHWeFCH2I,S2,200000,25600000,244206,31258460.045739,0.818978
+HuvulruPjjaqnoHWeFCH2I,S3,200000,25600000,243405,31155913.818220,0.821674
+HuvulruPjjaqnoHWeFCH2I,S4,200000,25600000,230550,29510438.641581,0.867490
+HuvulruPjjaqnoHWeFCH2I,S5,200000,25600000,231495,29631384.363172,0.863949
+HuvulruPjjaqnoHWeFCH2I,S6,200000,25600000,229528,29379679.692357,0.871351
+HuvulruPjjaqnoHWeFCH2I,S7,200000,25600000,223842,28651789.197519,0.893487
+HuvulruPjjaqnoHWeFCH2I,P0,25000,3200000,152536,19524693.902374,0.163895
+HuvulruPjjaqnoHWeFCH2I,P1,25000,3200000,84526,10819333.375159,0.295767
+HuvulruPjjaqnoHWeFCH2I,P2,25000,3200000,82017,10498223.303653,0.304813
+HuvulruPjjaqnoHWeFCH2I,P3,25000,3200000,57214,7323427.896669,0.436954
+HuvulruPjjaqnoHWeFCH2I,P4,25000,3200000,53879,6896566.453658,0.463999
+HuvulruPjjaqnoHWeFCH2I,P5,25000,3200000,51420,6581852.801766,0.486185
+HuvulruPjjaqnoHWeFCH2I,P6,25000,3200000,48572,6217303.262856,0.514693
+HuvulruPjjaqnoHWeFCH2I,P7,25000,3200000,41744,5343333.685114,0.598877

results/20260912T045131Z/core-8p8s-200k-128.txt

@@ -0,0 +1,25 @@
+=== core-8p8s-200k-128 ===
+
+NATS Pub/Sub stats: 2,007,937 msgs/sec ~ 245.11 MB/sec
+ Pub stats: 333,957 msgs/sec ~ 40.77 MB/sec
+  [1] 152,536 msgs/sec ~ 18.62 MB/sec (25000 msgs)
+  [2] 84,526 msgs/sec ~ 10.32 MB/sec (25000 msgs)
+  [3] 82,017 msgs/sec ~ 10.01 MB/sec (25000 msgs)
+  [4] 57,214 msgs/sec ~ 6.98 MB/sec (25000 msgs)
+  [5] 53,879 msgs/sec ~ 6.58 MB/sec (25000 msgs)
+  [6] 51,420 msgs/sec ~ 6.28 MB/sec (25000 msgs)
+  [7] 48,572 msgs/sec ~ 5.93 MB/sec (25000 msgs)
+  [8] 41,744 msgs/sec ~ 5.10 MB/sec (25000 msgs)
+  min 41,744 | avg 71,488 | max 152,536 | stddev 33,867 msgs
+ Sub stats: 1,790,736 msgs/sec ~ 218.60 MB/sec
+  [1] 349,350 msgs/sec ~ 42.65 MB/sec (200000 msgs)
+  [2] 248,162 msgs/sec ~ 30.29 MB/sec (200000 msgs)
+  [3] 244,206 msgs/sec ~ 29.81 MB/sec (200000 msgs)
+  [4] 243,405 msgs/sec ~ 29.71 MB/sec (200000 msgs)
+  [5] 230,550 msgs/sec ~ 28.14 MB/sec (200000 msgs)
+  [6] 231,495 msgs/sec ~ 28.26 MB/sec (200000 msgs)
+  [7] 229,528 msgs/sec ~ 28.02 MB/sec (200000 msgs)
+  [8] 223,842 msgs/sec ~ 27.32 MB/sec (200000 msgs)
+  min 223,842 | avg 250,067 | max 349,350 | stddev 38,364 msgs
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/js-1p-20k-128-r3.csv

@@ -0,0 +1,2 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+S0xQOJuOM4PlwAHoh5Bj7f,P0,40000,2560000,16155,2067883.858001,1.237981

results/20260912T045131Z/js-1p-20k-128-r3.txt

@@ -0,0 +1,5 @@
+=== js-1p-20k-128-r3 ===
+
+Pub stats: 16,155 msgs/sec ~ 1.97 MB/sec
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/js-2p2s-20k-128-r3.csv

@@ -0,0 +1,5 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+smN9zLbWAAZER4FjSmfwcO,S0,20126,1280000,5474,700679.773679,1.826797
+smN9zLbWAAZER4FjSmfwcO,S1,20130,1280000,5471,700313.845376,1.827752
+smN9zLbWAAZER4FjSmfwcO,P0,20000,1280000,8678,1110910.588857,1.152208
+smN9zLbWAAZER4FjSmfwcO,P1,20000,1280000,5485,702119.773868,1.823051

results/20260912T045131Z/js-2p2s-20k-128-r3.txt

@@ -0,0 +1,13 @@
+=== js-2p2s-20k-128-r3 ===
+
+NATS Pub/Sub stats: 21,861 msgs/sec ~ 2.67 MB/sec
+ Pub stats: 10,965 msgs/sec ~ 1.34 MB/sec
+  [1] 8,678 msgs/sec ~ 1.06 MB/sec (10000 msgs)
+  [2] 5,485 msgs/sec ~ 685.66 KB/sec (10000 msgs)
+  min 5,485 | avg 7,081 | max 8,678 | stddev 1,596 msgs
+ Sub stats: 10,942 msgs/sec ~ 1.34 MB/sec
+  [1] 5,474 msgs/sec ~ 684.26 KB/sec (10000 msgs)
+  [2] 5,471 msgs/sec ~ 683.90 KB/sec (10000 msgs)
+  min 5,471 | avg 5,472 | max 5,474 | stddev 1 msgs
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/js-4p-20k-1k-r3.csv

@@ -0,0 +1,5 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+zOcPILhowCWfp2PGmHUgqx,P0,10000,5120000,5121,5244574.853257,0.976247
+zOcPILhowCWfp2PGmHUgqx,P1,10000,5120000,4281,4383926.080211,1.167903
+zOcPILhowCWfp2PGmHUgqx,P2,10000,5120000,3480,3564282.061583,1.436474
+zOcPILhowCWfp2PGmHUgqx,P3,10000,5120000,3373,3454449.904903,1.482146

results/20260912T045131Z/js-4p-20k-1k-r3.txt

@@ -0,0 +1,10 @@
+=== js-4p-20k-1k-r3 ===
+
+Pub stats: 13,493 msgs/sec ~ 13.18 MB/sec
+ [1] 5,121 msgs/sec ~ 5.00 MB/sec (5000 msgs)
+ [2] 4,281 msgs/sec ~ 4.18 MB/sec (5000 msgs)
+ [3] 3,480 msgs/sec ~ 3.40 MB/sec (5000 msgs)
+ [4] 3,373 msgs/sec ~ 3.29 MB/sec (5000 msgs)
+ min 3,373 | avg 4,063 | max 5,121 | stddev 704 msgs
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/js-4p-50k-128-r3.csv

@@ -0,0 +1,5 @@
+#RunID,ClientID,MsgCount,MsgBytes,MsgsPerSec,BytesPerSec,DurationSecs
+vZIFpR751J0vbDTJQDYGTN,P0,25000,1600000,6628,848387.283433,1.885931
+vZIFpR751J0vbDTJQDYGTN,P1,25000,1600000,5762,737571.570534,2.169281
+vZIFpR751J0vbDTJQDYGTN,P2,25000,1600000,4162,532825.280344,3.002861
+vZIFpR751J0vbDTJQDYGTN,P3,25000,1600000,4154,531740.716359,3.008985

results/20260912T045131Z/js-4p-50k-128-r3.txt

@@ -0,0 +1,10 @@
+=== js-4p-50k-128-r3 ===
+
+Pub stats: 16,607 msgs/sec ~ 2.03 MB/sec
+ [1] 6,628 msgs/sec ~ 828.50 KB/sec (12500 msgs)
+ [2] 5,762 msgs/sec ~ 720.28 KB/sec (12500 msgs)
+ [3] 4,162 msgs/sec ~ 520.34 KB/sec (12500 msgs)
+ [4] 4,154 msgs/sec ~ 519.28 KB/sec (12500 msgs)
+ min 4,154 | avg 5,176 | max 6,628 | stddev 1,063 msgs
+
+Saved metric data in csv file /tmp/bench.csv

results/20260912T045131Z/lat-1p-5k-128.txt

@@ -0,0 +1,2 @@
+=== lat-1p-5k-128 ===
+{"count":5000,"pubs":1,"size":128,"min_us":149279,"avg_us":238626,"p50_us":248752,"p90_us":274314,"p99_us":279398,"max_us":279740,"min":"149.279ms","avg":"238.626ms","p50":"248.752ms","p90":"274.314ms","p99":"279.398ms","max":"279.740ms"}

results/20260912T045131Z/lat-4p-10k-128.txt

@@ -0,0 +1,2 @@
+=== lat-4p-10k-128 ===
+{"count":10000,"pubs":4,"size":128,"min_us":174174,"avg_us":263186,"p50_us":266672,"p90_us":299073,"p99_us":304233,"max_us":304475,"min":"174.174ms","avg":"263.186ms","p50":"266.672ms","p90":"299.073ms","p99":"304.233ms","max":"304.475ms"}

results/20260912T045131Z/lat-4p-5k-1k.txt

@@ -0,0 +1,2 @@
+=== lat-4p-5k-1k ===
+{"count":5000,"pubs":4,"size":1024,"min_us":155101,"avg_us":211706,"p50_us":217579,"p90_us":223268,"p99_us":227798,"max_us":228370,"min":"155.101ms","avg":"211.706ms","p50":"217.579ms","p90":"223.268ms","p99":"227.798ms","max":"228.370ms"}

results/20260912T045131Z/lat-8p-20k-128.txt

@@ -0,0 +1,2 @@
+=== lat-8p-20k-128 ===
+{"count":20000,"pubs":8,"size":128,"min_us":304586,"avg_us":453749,"p50_us":466296,"p90_us":499924,"p99_us":505112,"max_us":505620,"min":"304.586ms","avg":"453.749ms","p50":"466.296ms","p90":"499.924ms","p99":"505.112ms","max":"505.620ms"}

results/20260912T045131Z/lat-ping-1k-128.txt

@@ -0,0 +1,2 @@
+=== lat-ping-1k-128 ===
+{"count":1000,"pubs":1,"size":128,"min_us":254,"avg_us":307,"p50_us":286,"p90_us":332,"p99_us":734,"max_us":2763,"min":"0.254ms","avg":"0.307ms","p50":"0.286ms","p90":"0.332ms","p99":"0.734ms","max":"2.763ms"}