INCREMENTAL-BENCHMARKS.md

Codegraph Incremental Build Benchmarks

Self-measured on every release by running codegraph on its own codebase. Build tiers: full (cold), no-op (nothing changed), 1-file (single file modified). Import resolution: native batch vs JS fallback throughput.

Version	Engine	Files	Full Build	No-op	1-File	Resolve (native)	Resolve (JS)
3.15.0	native	629	3.5s ↑17%	24ms ↓4%	117ms ↑8%	6ms ~	10ms ↓3%
3.15.0	wasm	629	12.2s ↓14%	23ms ↓4%	113ms ↑55%	6ms ~	10ms ↓3%
3.13.0	native	695	3.0s ↑7%	25ms ↑9%	108ms ↓6%	6ms ↑11%	10ms ↑16%
3.13.0	wasm	695	14.2s ↑23%	24ms ↑9%	73ms ↑7%	6ms ↑11%	10ms ↑16%
3.12.0	native	670	2.8s ↑26%	23ms ↑21%	115ms ↑39%	5ms ↓7%	9ms ↓17%
3.12.0	wasm	670	11.5s ↑22%	22ms ↑16%	68ms ↑15%	5ms ↓7%	9ms ↓17%
3.11.2	native	628	2.2s ~	19ms ↑6%	83ms ↑4%	6ms ↓3%	10ms ↑3%
3.11.2	wasm	628	9.4s ~	19ms ↑12%	59ms ↓5%	6ms ↓3%	10ms ↑3%
3.11.1	native	625	2.2s ~	18ms ↑20%	80ms ↑25%	6ms ↑43%	10ms ↑27%
3.11.1	wasm	625	9.4s ↑23%	17ms ↑13%	62ms ↑22%	6ms ↑43%	10ms ↑27%
3.11.0	native	623	2.3s ↑16%	15ms ~	64ms ↓3%	4ms ↓21%	8ms ↑22%
3.11.0	wasm	623	7.7s ↓9%	15ms ↑15%	51ms ~	4ms ↓21%	8ms ↑22%
3.10.0	native	745	2.0s ↓34%	15ms ↑50%	66ms ↑22%	5ms ↓18%	7ms ↓38%
3.10.0	wasm	745	8.4s ↓40%	13ms ↓90%	51ms ↓18%	5ms ↓18%	7ms ↓38%
3.9.6	native	744	3.0s ↑39%	10ms ↑11%	54ms ↓87%	7ms ~	11ms ↑7%
3.9.6	wasm	744	14.0s ↑86%	131ms ↑589%	62ms ~	7ms ~	11ms ↑7%
3.9.4	native	668	2.1s ↓4%	9ms ~	406ms ↑7%	6ms ↑7%	9ms ↓15%
3.9.4	wasm	668	7.6s ~	19ms ↑6%	61ms ↓90%	6ms ↑7%	9ms ↓15%
3.9.3	native	667	2.2s ↓76%	9ms ↑13%	380ms ↓32%	6ms ↓5%	11ms ↑6%
3.9.3	wasm	667	7.5s ↑3%	18ms ↑6%	635ms ↑6%	6ms ↓5%	11ms ↑6%
3.9.2	native	667	9.4s ↑81%	8ms ↓47%	555ms ↓27%	6ms ↓17%	11ms ↓14%
3.9.2	wasm	667	7.2s ↑4%	17ms ↑21%	598ms ~	6ms ↓17%	11ms ↓14%
3.9.1	native	570	5.2s ↓20%	15ms ↑150%	757ms ↑44%	7ms ↑37%	12ms ↑13%
3.9.1	wasm	570	6.9s ↑2%	14ms ↑17%	603ms ↑11%	7ms ↑37%	12ms ↑13%
3.9.0	native	567	6.5s ~	6ms ↓25%	527ms ↑1185%	5ms ↓18%	11ms ~
3.9.0	wasm	567	6.8s ↓3%	12ms ↓20%	541ms ↓10%	5ms ↓18%	11ms ~
3.8.1	native	565	6.6s ↑468%	8ms ↑14%	41ms ↑24%	6ms ↑51%	11ms ↓14%
3.8.1	wasm	565	7.0s ↑493%	15ms ↑88%	603ms ↑1727%	6ms ↑51%	11ms ↓14%
3.8.0	native	564	1.2s ↓50%	7ms ↓46%	33ms ↓90%	4ms ↑2%	12ms ↓19%
3.8.0	wasm	564	1.2s ↓82%	8ms ↓58%	33ms ↓94%	4ms ↑2%	12ms ↓19%
3.7.0	wasm	532	6.4s ↑5%	19ms ↑46%	558ms ↑2%	4ms ↑3%	15ms ↑31%
3.6.0	wasm	514	6.1s ↑20%	13ms ~	545ms ↑7%	4ms ↓3%	12ms ↑9%
3.4.1	native	473	2.4s ↑3%	13ms ↑8%	331ms ↓26%	4ms ~	13ms ↑8%
3.4.1	wasm	473	5.1s ~	13ms ↑8%	511ms ↓17%	4ms ~	13ms ↑8%
3.4.0	native	473	2.3s ↓4%	12ms ↑9%	448ms ↑29%	4ms ↓58%	12ms ↓54%
3.4.0	wasm	473	5.0s ↑15%	12ms ↑20%	617ms ↑21%	4ms ↓58%	12ms ↓54%
3.3.1	native	442	2.4s ↓22%	11ms ↑10%	346ms ↓17%	9ms ↓6%	26ms ~
3.3.1	wasm	442	4.4s ↑2%	10ms ↓9%	508ms ↑6%	9ms ↓6%	26ms ~
3.3.0	native	429	3.0s ↑141%	10ms ↑67%	417ms ↑74%	10ms ↑700%	26ms ↑888%
3.3.0	wasm	429	4.3s ↑29%	11ms ~	479ms ↑41%	10ms ↑700%	26ms ↑888%
3.1.4	native	398	1.3s ↑9%	6ms ~	240ms ↓11%	1ms ↓37%	3ms ↓45%
3.1.4	wasm	398	3.3s ↑10%	11ms ↑83%	340ms ↓28%	1ms ↓37%	3ms ↓45%
3.1.3	native	236	1.2s ~	6ms ↑20%	271ms ↑3%	2ms ↓5%	5ms ~
3.1.3	wasm	236	3.0s ↑3%	6ms ~	473ms ↓3%	2ms ↓5%	5ms ~
3.1.2	native	235	1.2s ↑6%	5ms ~	264ms ↓20%	2ms ↓9%	5ms ↑12%
3.1.2	wasm	235	2.9s ~	6ms ~	488ms ↓9%	2ms ↓9%	5ms ↑12%
3.1.0	native	180	1.1s ↑7%	5ms ↓98%	329ms ↓3%	2ms ↓39%	4ms ↑5%
3.1.0	wasm	180	2.9s ↑13%	6ms ↑20%	536ms ↓6%	2ms ↓39%	4ms ↑5%
3.0.4	native	177	1.0s ↓41%	319ms ↑7875%	338ms ↓2%	4ms ↑6%	4ms ~
3.0.4	wasm	177	2.5s ↑6%	5ms ~	568ms ↑12%	4ms ↑6%	4ms ~
3.0.3	native	172	1.8s ↓9%	4ms ↓20%	346ms ~	3ms ↓3%	4ms ↓7%
3.0.3	wasm	172	2.4s ↓6%	5ms ↓17%	505ms ~	3ms ↓3%	4ms ↓7%
3.0.2	native	172	1.9s ↓17%	5ms ↑25%	349ms ↓62%	4ms ↓3%	4ms ↑7%
3.0.2	wasm	172	2.5s ↓23%	6ms ~	515ms ↓50%	4ms ↓3%	4ms ↑7%
3.0.1	native	165	2.3s ↑223%	4ms ↓20%	928ms ↑186%	4ms ↑3%	4ms ↓7%
3.0.1	wasm	165	3.3s ↑62%	6ms ↑20%	1.0s ↓4%	4ms ↑3%	4ms ↓7%
3.0.0	native	164	721ms ↑152%	5ms ↑25%	325ms ↑141%	4ms ↑21%	4ms ↑30%
3.0.0	wasm	164	2.0s ↑128%	5ms ↑25%	1.1s ↑112%	4ms ↑21%	4ms ↑30%
2.6.0	native	146	286ms ↑3%	4ms ↓33%	135ms ↑5%	3ms ~	3ms ↓3%
2.6.0	wasm	146	899ms ~	4ms ↓20%	503ms ↑37%	3ms ~	3ms ↓3%
2.5.1	native	142	277ms	6ms	129ms	3ms	3ms
2.5.1	wasm	142	888ms	5ms	368ms	3ms	3ms

Latest results

Version: 3.15.0 | Files: 629 | Date: 2026-06-23

Native (Rust)

Metric	Value
Full build	3.5s
No-op rebuild	24ms
1-file rebuild	117ms

1-file rebuild phase breakdown (native)

Phase	Time
setup	5ms
collect	7ms
detect	3ms
parse	0ms
insert	0ms
resolve	0ms
edges	5ms
structure	4ms
roles	18ms
gap detect + backfill	39ms
CHA expansion	4ms
this/super dispatch	2ms
role reclassify	0ms
technique backfill	1ms
ast	0ms
complexity	0ms
cfg	0ms
dataflow	0ms
finalize	0ms

WASM

Metric	Value
Full build	12.2s
No-op rebuild	23ms
1-file rebuild	113ms

1-file rebuild phase breakdown (wasm)

Phase	Time
setup	5ms
collect	16ms
detect	56ms
parse	2ms
insert	0ms
resolve	1ms
edges	7ms
structure	3ms
roles	16ms
ast	1ms
complexity	1ms
cfg	0ms
dataflow	1ms
finalize	0ms

Import Resolution

Metric	Value
Import pairs	1059
Native batch	6ms
JS fallback	10ms
Per-import (native)	0ms
Per-import (JS)	0ms
Speedup ratio	1.6x

Note (3.9.5): No build/rebuild metrics for this release (both engines null) — only import resolution data was collected. Both the WASM and native workers reached the 1-file rebuild phase and then hung past the benchmark's 10-minute per-engine timeout (see scripts/lib/fork-engine.ts), so each was killed (SIGKILL) before returning results. Import resolution is unaffected because it runs in the parent process and doesn't depend on the full build. 3.9.5 is consequently absent from the top-level version-history comparison table since there are no build-time figures to compare against prior releases. The workflow run is here; the root cause will be investigated and the numbers backfilled in a follow-up if possible.