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perf: add benchmark infrastructure and performance documentation#177

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HugoRCD merged 9 commits intomainfrom
EVL-120
Mar 14, 2026
Merged

perf: add benchmark infrastructure and performance documentation#177
HugoRCD merged 9 commits intomainfrom
EVL-120

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@HugoRCD HugoRCD commented Mar 14, 2026 •
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This pull request introduces a comprehensive performance benchmarking and regression tracking system for the evlog package.
It adds automated CI workflows to benchmark both performance and bundle size on every pull request, provides a detailed markdown comparison report as a PR comment, and documents the benchmarking methodology and results.
Additionally, it introduces granular benchmark scripts for all core features and enrichers.

@HugoRCD HugoRCD self-assigned this Mar 14, 2026
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vercel bot commented Mar 14, 2026 •
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The latest updates on your projects. Learn more about Vercel for GitHub.

Project Deployment Actions Updated (UTC)
evlog-docs Ready Ready Preview, Comment, Open in v0 Mar 14, 2026 4:39pm

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github-actions bot commented Mar 14, 2026 •
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Thank you for following the naming conventions! 🙏

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pkg-pr-new bot commented Mar 14, 2026 •
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npm i https://pkg.pr.new/evlog@177

npm i https://pkg.pr.new/@evlog/nuxthub@177

commit: de6af3b

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Benchmark report

Performance (first run — no baseline to compare)

Benchmark ops/sec Mean p99
createUserAgentEnricher > Chrome desktop 908.7K 0.0011ms 0.0023ms
createUserAgentEnricher > Firefox Linux 1.44M 0.0007ms 0.0009ms
createUserAgentEnricher > Googlebot 1.58M 0.0006ms 0.0008ms
createUserAgentEnricher > no user-agent header 12.26M 0.0001ms 0.0001ms
createGeoEnricher > Vercel headers (full) 1.99M 0.0005ms 0.0006ms
createGeoEnricher > Cloudflare headers (country only) 458.0K 0.0022ms 0.0024ms
createGeoEnricher > no geo headers 1.21M 0.0008ms 0.0009ms
createRequestSizeEnricher > with content-length 9.08M 0.0001ms 0.0001ms
createRequestSizeEnricher > no content-length 8.21M 0.0001ms 0.0002ms
createTraceContextEnricher > with traceparent 1.92M 0.0005ms 0.0006ms
createTraceContextEnricher > with traceparent + tracestate 3.31M 0.0003ms 0.0004ms
createTraceContextEnricher > no trace headers 6.36M 0.0002ms 0.0002ms
full enricher pipeline > all enrichers (all headers present) 176.3K 0.0057ms 0.0117ms
full enricher pipeline > all enrichers (no headers) 927.3K 0.0011ms 0.0012ms
createError > string message 108.4K 0.0092ms 0.0179ms
createError > with status 106.6K 0.0094ms 0.0184ms
createError > full options 104.8K 0.0095ms 0.0189ms
createError > with cause 80.3K 0.0125ms 0.0218ms
parseError > parse EvlogError 5.55M 0.0002ms 0.0002ms
parseError > parse plain Error 14.54M 0.0001ms 0.0001ms
parseError > parse fetch-like error 14.36M 0.0001ms 0.0001ms
parseError > parse string 13.53M 0.0001ms 0.0001ms
createError + parseError round-trip > create + parse (simple) 108.2K 0.0092ms 0.0182ms
createError + parseError round-trip > create + parse (full) 78.4K 0.0128ms 0.0220ms
EvlogError serialization > toJSON() 4.22M 0.0002ms 0.0003ms
EvlogError serialization > toString() 1.37M 0.0007ms 0.0009ms
EvlogError serialization > JSON.stringify() 707.7K 0.0014ms 0.0016ms
JSON serialization (production mode) > emit + JSON.stringify 285.6K 0.0035ms 0.0068ms
pretty print (development mode) > emit + pretty print 294.9K 0.0034ms 0.0078ms
silent mode (no output) > emit silent (event build only) 289.6K 0.0035ms 0.0070ms
JSON.stringify baseline > raw JSON.stringify (same payload) 611.3K 0.0016ms 0.0025ms
createLogger > no initial context 7.58M 0.0001ms 0.0002ms
createLogger > with shallow context 7.61M 0.0001ms 0.0002ms
createLogger > with nested context 7.04M 0.0001ms 0.0002ms
createRequestLogger > with method + path 7.50M 0.0001ms 0.0002ms
createRequestLogger > with method + path + requestId 5.15M 0.0002ms 0.0002ms
log.set() > shallow merge (3 fields) 5.77M 0.0002ms 0.0002ms
log.set() > shallow merge (10 fields) 4.95M 0.0002ms 0.0003ms
log.set() > deep nested merge 2.02M 0.0005ms 0.0007ms
log.set() > multiple sequential sets 1.88M 0.0005ms 0.0007ms
log.emit() > emit minimal event 867.6K 0.0012ms 0.0015ms
log.emit() > emit with context 266.3K 0.0038ms 0.0063ms
log.emit() > emit with error 21.3K 0.0470ms 0.0989ms
log.emit() > full lifecycle (create + set + emit) 253.7K 0.0039ms 0.0082ms
log.set() payload sizes > small payload (2 fields) 643.6K 0.0016ms 0.0017ms
log.set() payload sizes > medium payload (50 fields) 54.2K 0.0184ms 0.0283ms
log.set() payload sizes > large payload (200 nested fields) 10.2K 0.0976ms 0.2038ms
head sampling > no sampling configured 156.8K 0.0064ms 0.0122ms
head sampling > with sampling rates 229.1K 0.0044ms 0.0081ms
tail sampling (shouldKeep) > no match (fast path) 14.35M 0.0001ms 0.0001ms
tail sampling (shouldKeep) > status match 14.41M 0.0001ms 0.0001ms
tail sampling (shouldKeep) > duration match 14.35M 0.0001ms 0.0001ms
tail sampling (shouldKeep) > path glob match 14.37M 0.0001ms 0.0001ms
head + tail sampling combined > full emit with sampling (likely sampled out) 848.0K 0.0012ms 0.0042ms
head + tail sampling combined > full emit with force-keep (tail sampling hit) 391.0K 0.0026ms 0.0057ms

Bundle size (first run — no baseline to compare)

Entry Raw Gzip
framework/nitro 17.44 kB 6.85 kB
logger 11.88 kB 3.64 kB
framework/next 8.93 kB 3.02 kB
adapter/sentry 6.00 kB 2.33 kB
adapter/otlp 5.71 kB 2.09 kB
enrichers 6.15 kB 1.92 kB
framework/sveltekit 4.84 kB 1.54 kB
adapter/posthog 4.78 kB 1.48 kB
adapter/fs 3.38 kB 1.42 kB
pipeline 4.17 kB 1.35 kB
utils 3.20 kB 1.34 kB
adapter/axiom 3.24 kB 1.30 kB
browser 2.93 kB 1.21 kB
error 3.06 kB 1.21 kB
framework/nestjs 2.79 kB 1.20 kB
adapter/better-stack 2.62 kB 1.08 kB
framework/elysia 2.51 kB 1.06 kB
framework/fastify 2.29 kB 1010 B
workers 2.08 kB 960 B
framework/express 1.23 kB 660 B
framework/hono 1.07 kB 593 B
toolkit 486 B 243 B
core (index) 497 B 205 B
types 11 B 31 B
Total 101.25 kB 37.66 kB

@HugoRCD HugoRCD merged commit 1e78560 into main Mar 14, 2026
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@HugoRCD HugoRCD deleted the EVL-120 branch March 14, 2026 16:41
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