grit://cooking/bench/commit/paths@synth-10k

grit commit · paths @synth-10k

Partial commit of ~1% paths: grit commit -- paths vs git commit --only

repo: 10,000-file synthetic repository; canonical cached shape, scenario variants documented by the runner · 10,000 files · 1,000 commits · 800 refs

$ grit-bench daily --only commit/paths@synth-10k2026-10-27 · grit 8dbc58e77 · git version 2.43.0

tool	median	min	max	runs	peak memory
git	21 ms	20 ms	43 ms	20	16 MB
grit	23 ms	22 ms	67 ms	20	29 MB

grit is 1.1× slowermemory: 1.8× more

every timed run (log scale)

git

grit

16 ms84 ms

How it's measured

before each run

grit-bench prepare-worktree-commit --git git

git runs

$ set -eu
if [ -s /tmp/grit-bench-scratch/daily-synth-10k/.grit-bench-worktree-paths ]; then
  tr '\n' '\0' < /tmp/grit-bench-scratch/daily-synth-10k/.grit-bench-worktree-paths | xargs -0 git commit -q -m bench --only --
fi

grit runs

$ set -eu
if [ -s /tmp/grit-bench-scratch/daily-synth-10k/.grit-bench-worktree-paths ]; then
  tr '\n' '\0' < /tmp/grit-bench-scratch/daily-synth-10k/.grit-bench-worktree-paths | xargs -0 grit commit -m bench --
fi

Where the time goesone extra traced run per tool, outside the timed runs

git · median run 21 ms

index: preload ×3

4.7 ms

index: do_write_index ×2

4.5 ms

index: do_read_index ×3

1.6 ms

unpack_trees: unpack_trees ×2

1.4 ms

run: git maintenance

1.4 ms

unpack_trees: traverse_trees ×2

1.1 ms

cache_tree: update ×3

0.4 ms

index: refresh ×2

0.4 ms

index: name-hash-init ×2

0.4 ms

cache_tree: read ×3

0.1 ms

cache_tree: write ×2

0.0 ms

diff: setup

0.0 ms

diff: write

0.0 ms

grit · median run 23 ms

grit.index.write ×2

3.6 ms

grit.index.read

0.8 ms

grit.repository.open ×2

0.3 ms

grit.config.load ×4

0.1 ms

grit.diff.tree

0.1 ms

grit.pack.index.open

0.0 ms

Every day8 days

date	grit commit	git	grit	grit vs git	grit peak
2026-10-27	8dbc58e77	21 ms	23 ms	1.1× slower	29 MB
2026-10-26	c7cf2c443	39 ms	60 ms	1.5× slower	33 MB
2026-10-25	2824ad391	24 ms	27 ms	1.1× slower	25 MB
2026-10-24	157a05dde	22 ms	28 ms	1.3× slower	26 MB
2026-10-23	bddf92f86	23 ms	38 ms	1.6× slower	27 MB
2026-10-22	4c131b942	23 ms	543 ms	24× slower	28 MB
2026-10-21	d4844e92a	23 ms	519 ms	23× slower	27 MB
2026-10-20	4754ad0b9	—	not run	—	—