Comparison: Historical Core Benchmarks

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Job	Source	Filter	Repetitions	Go	Worker	Job Info
be6941bd-9334-46ab-99e9-820afe9babb5	main https://github.com/nats-io/nats-server.git (db0a2c8ce3241df7dbc6cd730b989cfa05677068)	Benchmark.*	5 x 3s	go version go1.26.3 linux/amd64 (/usr/local/go1.26.3/bin/go)	dev (?) gauge-go-bench-away Linux_6.18.5+deb14-amd64-x86_64	Submitted by at 2026-08-07 04:42:06 +0000 UTC
7a9726ec-e390-4a1b-a287-c4c64642512b	main https://github.com/nats-io/nats-server.git (d9dd620b1af65e84efe439357f9cd3ae8e2ad84e)	Benchmark.*	5 x 3s	go version go1.26.3 linux/amd64 (/usr/local/go1.26.3/bin/go)	dev (?) gauge-go-bench-away Linux_6.18.5+deb14-amd64-x86_64	Submitted by at 2026-08-08 04:26:39 +0000 UTC

Publish throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*Pub.*Payload.*'

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	Previous	Latest	Δ%
______Pub0b_Payload-16	13.6M ± 0.0M	13.7M ± 0.0M	+0.5%
______Pub8b_Payload-16	13.5M ± 0.1M	13.4M ± 0.1M	Inconclusive
_____Pub32b_Payload-16	12.7M ± 0.1M	12.8M ± 0.1M	+1.0%
____Pub128B_Payload-16	11.1M ± 0.3M	11.3M ± 0.2M	Inconclusive
____Pub256B_Payload-16	10.4M ± 0.1M	10.4M ± 0.0M	+0.6%
______Pub1K_Payload-16	6.80M ± 0.46M	7.22M ± 0.20M	+6.1%
______Pub4K_Payload-16	1.62M ± 0.02M	1.60M ± 0.02M	-1.3%
______Pub8K_Payload-16	784k ± 2k	784k ± 5k	Inconclusive
_____Pub32K_Payload-16	182k ± 2k	183k ± 2k	Inconclusive
__AuthPub0b_Payload-16	10.4M ± 0.1M	10.6M ± 0.0M	+2.7%

Publish throughput (byte/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*Pub.*Payload.*'

Show results table

	Previous	Latest	Δ%
______Pub0b_Payload-16	150MB/s ± 0MB/s	150MB/s ± 0MB/s	+0.5%
______Pub8b_Payload-16	256MB/s ± 1MB/s	255MB/s ± 2MB/s	Inconclusive
_____Pub32b_Payload-16	557MB/s ± 4MB/s	563MB/s ± 3MB/s	+1.0%
____Pub128B_Payload-16	1.56GB/s ± 0.05GB/s	1.59GB/s ± 0.02GB/s	Inconclusive
____Pub256B_Payload-16	2.79GB/s ± 0.02GB/s	2.80GB/s ± 0.01GB/s	+0.6%
______Pub1K_Payload-16	7.06GB/s ± 0.48GB/s	7.50GB/s ± 0.21GB/s	+6.2%
______Pub4K_Payload-16	6.65GB/s ± 0.08GB/s	6.57GB/s ± 0.07GB/s	-1.3%
______Pub8K_Payload-16	6.44GB/s ± 0.01GB/s	6.44GB/s ± 0.04GB/s	Inconclusive
_____Pub32K_Payload-16	5.78GB/s ± 0.25GB/s	6.00GB/s ± 0.06GB/s	Inconclusive
__AuthPub0b_Payload-16	114MB/s ± 1MB/s	117MB/s ± 0MB/s	+2.7%

FanOut throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*[^R]FanOut.*'

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	Previous	Latest	Δ%
______FanOut_8x1x10-16	1.30M ± 0.01M	1.30M ± 0.01M	Inconclusive
_____FanOut_8x1x100-16	164k ± 0k	165k ± 1k	Inconclusive
____FanOut_8x10x100-16	13.4k ± 0.1k	13.4k ± 0.1k	Inconclusive
___FanOut_8x10x1000-16	1.68k ± 0.01k	1.68k ± 0.01k	Inconclusive
___FanOut_8x100x100-16	1.42k ± 0.00k	1.42k ± 0.00k	Inconclusive
__FanOut_8x100x1000-16	164 ± 1	162 ± 1	-0.9%
__FanOut_8x10x10000-16	148 ± 2	149 ± 2	Inconclusive
___FanOut_8x500x100-16	266 ± 1	266 ± 1	Inconclusive
___FanOut_128x1x100-16	105k ± 0k	105k ± 0k	Inconclusive
__FanOut_128x10x100-16	9.06k ± 0.03k	9.03k ± 0.05k	Inconclusive
_FanOut_128x10x1000-16	1.15k ± 0.00k	1.14k ± 0.01k	-0.8%
_FanOut_128x100x100-16	989 ± 4	992 ± 3	+0.3%
_FanOut_512x100x100-16	545 ± 3	544 ± 1	Inconclusive
__FanOut_512x100x1k-16	59.9 ± 0.3	59.9 ± 0.4	Inconclusive
____FanOut_1kx10x1k-16	876 ± 12	871 ± 7	Inconclusive
__FanOut_1kx100x100-16	799 ± 4	797 ± 2	Inconclusive

FanOut throughput (byte/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*[^R]FanOut.*'

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	Previous	Latest	Δ%
______FanOut_8x1x10-16	323MB/s ± 1MB/s	324MB/s ± 2MB/s	Inconclusive
_____FanOut_8x1x100-16	381MB/s ± 1MB/s	382MB/s ± 2MB/s	Inconclusive
____FanOut_8x10x100-16	308MB/s ± 1MB/s	309MB/s ± 2MB/s	Inconclusive
___FanOut_8x10x1000-16	403MB/s ± 1MB/s	402MB/s ± 3MB/s	Inconclusive
___FanOut_8x100x100-16	326MB/s ± 0MB/s	326MB/s ± 1MB/s	Inconclusive
__FanOut_8x100x1000-16	393MB/s ± 2MB/s	389MB/s ± 2MB/s	-0.9%
__FanOut_8x10x10000-16	371MB/s ± 6MB/s	373MB/s ± 4MB/s	Inconclusive
___FanOut_8x500x100-16	306MB/s ± 1MB/s	305MB/s ± 1MB/s	Inconclusive
___FanOut_128x1x100-16	1.54GB/s ± 0.01GB/s	1.54GB/s ± 0.01GB/s	Inconclusive
__FanOut_128x10x100-16	1.32GB/s ± 0.00GB/s	1.31GB/s ± 0.01GB/s	Inconclusive
_FanOut_128x10x1000-16	1.68GB/s ± 0.01GB/s	1.66GB/s ± 0.01GB/s	-0.8%
_FanOut_128x100x100-16	1.43GB/s ± 0.01GB/s	1.44GB/s ± 0.00GB/s	+0.3%
_FanOut_512x100x100-16	2.88GB/s ± 0.01GB/s	2.88GB/s ± 0.01GB/s	Inconclusive
__FanOut_512x100x1k-16	3.18GB/s ± 0.02GB/s	3.17GB/s ± 0.02GB/s	Inconclusive
____FanOut_1kx10x1k-16	9.14GB/s ± 0.13GB/s	9.08GB/s ± 0.07GB/s	Inconclusive
__FanOut_1kx100x100-16	8.33GB/s ± 0.04GB/s	8.30GB/s ± 0.02GB/s	Inconclusive

FanOut 2-nodes throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*RFanOut_8.*'

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	Previous	Latest	Δ%
_____RFanOut_8x1x10-16	1.29M ± 0.01M	1.29M ± 0.01M	Inconclusive
____RFanOut_8x1x100-16	163k ± 2k	164k ± 2k	Inconclusive
___RFanOut_8x10x100-16	13.6k ± 0.0k	13.5k ± 0.1k	-0.4%
__RFanOut_8x10x1000-16	1.70k ± 0.01k	1.69k ± 0.01k	-0.5%
__RFanOut_8x100x100-16	1.44k ± 0.00k	1.43k ± 0.00k	-0.2%
_RFanOut_8x100x1000-16	166 ± 1	166 ± 0	Inconclusive
_RFanOut_8x10x10000-16	152 ± 1	153 ± 1	Inconclusive

FanOut 2-nodes throughput (byte/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*RFanOut_8.*'

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	Previous	Latest	Δ%
_____RFanOut_8x1x10-16	320MB/s ± 4MB/s	320MB/s ± 3MB/s	Inconclusive
____RFanOut_8x1x100-16	377MB/s ± 6MB/s	381MB/s ± 5MB/s	Inconclusive
___RFanOut_8x10x100-16	312MB/s ± 1MB/s	311MB/s ± 1MB/s	-0.4%
__RFanOut_8x10x1000-16	408MB/s ± 2MB/s	406MB/s ± 2MB/s	-0.5%
__RFanOut_8x100x100-16	330MB/s ± 1MB/s	330MB/s ± 1MB/s	-0.2%
_RFanOut_8x100x1000-16	399MB/s ± 2MB/s	399MB/s ± 1MB/s	Inconclusive
_RFanOut_8x10x10000-16	380MB/s ± 3MB/s	382MB/s ± 2MB/s	Inconclusive

FanIn throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*FanIn.*'

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	Previous	Latest	Δ%
_____FanIn_1kx100x1-16	1.98M ± 0.00M	1.98M ± 0.00M	+0.2%
_____FanIn_4kx100x1-16	732k ± 8k	740k ± 4k	+1.1%
_____FanIn_8kx100x1-16	471k ± 4k	473k ± 4k	Inconclusive
____FanIn_16kx100x1-16	240k ± 2k	241k ± 2k	Inconclusive
____FanIn_64kx100x1-16	50.4k ± 0.5k	50.1k ± 0.3k	-0.6%

FanIn throughput (byte/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*FanIn.*'

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	Previous	Latest	Δ%
_____FanIn_1kx100x1-16	4.11GB/s ± 0.01GB/s	4.12GB/s ± 0.01GB/s	+0.2%
_____FanIn_4kx100x1-16	6.02GB/s ± 0.07GB/s	6.09GB/s ± 0.04GB/s	+1.1%
_____FanIn_8kx100x1-16	7.72GB/s ± 0.07GB/s	7.76GB/s ± 0.06GB/s	Inconclusive
____FanIn_16kx100x1-16	7.88GB/s ± 0.07GB/s	7.92GB/s ± 0.06GB/s	Inconclusive
____FanIn_64kx100x1-16	6.61GB/s ± 0.06GB/s	6.56GB/s ± 0.04GB/s	-0.6%

Gateway throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*GWs.*'

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	Previous	Latest	Δ%
____GWs_Opt_1kx01x0-16	3.63M ± 0.06M	3.63M ± 0.07M	Inconclusive
____GWs_Opt_2kx01x0-16	2.93M ± 0.10M	2.94M ± 0.09M	Inconclusive
____GWs_Opt_4kx01x0-16	1.61M ± 0.02M	1.59M ± 0.02M	-1.8%
____GWs_Opt_1kx10x0-16	8.70M ± 0.33M	8.86M ± 0.33M	Inconclusive
____GWs_Opt_2kx10x0-16	6.63M ± 0.55M	6.70M ± 0.19M	Inconclusive
____GWs_Opt_4kx10x0-16	3.30M ± 0.23M	3.29M ± 0.21M	Inconclusive
____GWs_Opt_1kx01x1-16	1.82M ± 0.01M	1.80M ± 0.02M	-1.2%
____GWs_Opt_2kx01x1-16	1.30M ± 0.01M	1.30M ± 0.00M	Inconclusive
____GWs_Opt_4kx01x1-16	713k ± 12k	714k ± 12k	Inconclusive
____GWs_Opt_1kx10x1-16	1.80M ± 0.04M	1.77M ± 0.03M	Inconclusive
____GWs_Opt_2kx10x1-16	1.18M ± 0.01M	1.17M ± 0.02M	Inconclusive
____GWs_Opt_4kx10x1-16	647k ± 6k	650k ± 14k	Inconclusive
____GWs_Int_1kx01x0-16	3.47M ± 0.07M	3.43M ± 0.10M	Inconclusive
____GWs_Int_2kx01x0-16	2.75M ± 0.04M	2.78M ± 0.04M	+1.2%
____GWs_Int_4kx01x0-16	1.57M ± 0.02M	1.50M ± 0.07M	-4.6%
____GWs_Int_1kx10x0-16	8.75M ± 0.38M	8.91M ± 0.33M	Inconclusive
____GWs_Int_2kx10x0-16	5.62M ± 1.49M	6.72M ± 0.38M	Inconclusive
____GWs_Int_4kx10x0-16	3.37M ± 0.21M	3.07M ± 0.37M	-9.3%
____GWs_Int_1kx01x1-16	1.79M ± 0.02M	1.77M ± 0.01M	-1.5%
____GWs_Int_2kx01x1-16	1.29M ± 0.02M	1.29M ± 0.01M	Inconclusive
____GWs_Int_4kx01x1-16	719k ± 12k	700k ± 26k	Inconclusive
____GWs_Int_1kx10x1-16	1.78M ± 0.01M	1.75M ± 0.04M	Inconclusive
____GWs_Int_2kx10x1-16	1.17M ± 0.03M	1.18M ± 0.02M	Inconclusive
____GWs_Int_4kx10x1-16	658k ± 35k	655k ± 31k	Inconclusive
__GWs_Reqs_1_SubAll-16	2.26M ± 0.02M	2.28M ± 0.02M	Inconclusive
__GWs_Reqs_1SubEach-16	191k ± 7k	191k ± 6k	Inconclusive

Gateway throughput (byte/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*GWs.*'

Show results table

	Previous	Latest	Δ%
____GWs_Opt_1kx01x0-16	3.78GB/s ± 0.07GB/s	3.77GB/s ± 0.07GB/s	Inconclusive
____GWs_Opt_2kx01x0-16	6.05GB/s ± 0.21GB/s	6.07GB/s ± 0.18GB/s	Inconclusive
____GWs_Opt_4kx01x0-16	6.64GB/s ± 0.09GB/s	6.52GB/s ± 0.08GB/s	-1.7%
____GWs_Opt_1kx10x0-16	9.04GB/s ± 0.34GB/s	9.21GB/s ± 0.34GB/s	Inconclusive
____GWs_Opt_2kx10x0-16	11.6GB/s ± 3.2GB/s	13.8GB/s ± 0.4GB/s	Inconclusive
____GWs_Opt_4kx10x0-16	13.6GB/s ± 0.9GB/s	13.5GB/s ± 0.9GB/s	Inconclusive
____GWs_Opt_1kx01x1-16	5.69GB/s ± 0.04GB/s	5.62GB/s ± 0.06GB/s	-1.2%
____GWs_Opt_2kx01x1-16	8.04GB/s ± 0.08GB/s	8.04GB/s ± 0.02GB/s	Inconclusive
____GWs_Opt_4kx01x1-16	8.80GB/s ± 0.15GB/s	8.81GB/s ± 0.15GB/s	Inconclusive
____GWs_Opt_1kx10x1-16	5.63GB/s ± 0.13GB/s	5.53GB/s ± 0.10GB/s	Inconclusive
____GWs_Opt_2kx10x1-16	7.31GB/s ± 0.06GB/s	7.28GB/s ± 0.11GB/s	Inconclusive
____GWs_Opt_4kx10x1-16	7.99GB/s ± 0.07GB/s	8.02GB/s ± 0.17GB/s	Inconclusive
____GWs_Int_1kx01x0-16	3.61GB/s ± 0.07GB/s	3.57GB/s ± 0.10GB/s	Inconclusive
____GWs_Int_2kx01x0-16	5.67GB/s ± 0.08GB/s	5.74GB/s ± 0.08GB/s	+1.2%
____GWs_Int_4kx01x0-16	6.46GB/s ± 0.08GB/s	6.17GB/s ± 0.30GB/s	-4.5%
____GWs_Int_1kx10x0-16	9.10GB/s ± 0.39GB/s	9.27GB/s ± 0.34GB/s	Inconclusive
____GWs_Int_2kx10x0-16	11.6GB/s ± 3.1GB/s	13.9GB/s ± 0.8GB/s	Inconclusive
____GWs_Int_4kx10x0-16	13.9GB/s ± 0.9GB/s	12.6GB/s ± 1.5GB/s	-8.9%
____GWs_Int_1kx01x1-16	5.61GB/s ± 0.06GB/s	5.52GB/s ± 0.04GB/s	-1.5%
____GWs_Int_2kx01x1-16	7.99GB/s ± 0.15GB/s	7.98GB/s ± 0.07GB/s	Inconclusive
____GWs_Int_4kx01x1-16	8.88GB/s ± 0.15GB/s	8.64GB/s ± 0.32GB/s	Inconclusive
____GWs_Int_1kx10x1-16	5.57GB/s ± 0.03GB/s	5.48GB/s ± 0.13GB/s	Inconclusive
____GWs_Int_2kx10x1-16	7.24GB/s ± 0.16GB/s	7.32GB/s ± 0.14GB/s	Inconclusive
____GWs_Int_4kx10x1-16	8.12GB/s ± 0.43GB/s	8.09GB/s ± 0.38GB/s	Inconclusive
__GWs_Reqs_1_SubAll-16	231MB/s ± 2MB/s	232MB/s ± 2MB/s	Inconclusive
__GWs_Reqs_1SubEach-16	33.9MB/s ± 1.2MB/s	33.9MB/s ± 1.0MB/s	Inconclusive

Queue throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*Queue.*'

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	Previous	Latest	Δ%
_____PubTwoQueueSub-16	4.08M ± 0.01M	4.04M ± 0.01M	-1.0%
____PubFourQueueSub-16	4.08M ± 0.01M	4.03M ± 0.01M	-1.3%
___PubEightQueueSub-16	4.06M ± 0.00M	4.03M ± 0.01M	-0.8%
____Routed2QueueSub-16	3.08M ± 0.13M	3.12M ± 0.07M	Inconclusive
____Routed4QueueSub-16	3.07M ± 0.08M	3.09M ± 0.09M	Inconclusive
____Routed8QueueSub-16	3.00M ± 0.04M	3.02M ± 0.04M	Inconclusive
___Routed16QueueSub-16	2.88M ± 0.01M	2.86M ± 0.04M	-0.6%

Pub+Sub throughput (msg/s)

Error bars represent 90% confidence interval, benchmarks filter: '.*Pub.*Sub[^(5|_100K)].*'

Show results table

	Previous	Latest	Δ%
_____________PubSub-16	4.38M ± 0.02M	4.39M ± 0.01M	Inconclusive
_____PubSubTwoConns-16	4.42M ± 0.02M	4.41M ± 0.02M	Inconclusive
_____PubTwoQueueSub-16	4.08M ± 0.01M	4.04M ± 0.01M	-1.0%
____PubFourQueueSub-16	4.08M ± 0.01M	4.03M ± 0.01M	-1.3%
___PubEightQueueSub-16	4.06M ± 0.00M	4.03M ± 0.01M	-0.8%
__DenyMsgNoWCPubSub-16	4.36M ± 0.01M	4.35M ± 0.01M	-0.4%
_DenyMsgYesWCPubSub-16	4.35M ± 0.02M	4.34M ± 0.02M	Inconclusive