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

grit commit · small @synth-10k

Commit staged changes vs git commit

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/small@synth-10k2026-10-27 · grit 8dbc58e77 · git version 2.43.0

tool	median	min	max	runs	peak memory
git	26 ms	25 ms	28 ms	20	13 MB
grit	18 ms	17 ms	18 ms	20	25 MB

grit is 1.5× fastermemory: 1.9× more

every timed run (log scale)

git

grit

13 ms35 ms

How it's measured

before each run

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

git runs

$ set -eu
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 add -- > /dev/null 2>&1
fi
git commit -q -m bench

grit runs

$ grit commit bench

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

git · median run 26 ms

index: preload ×3

4.6 ms

index: do_write_index ×2

4.4 ms

run: git maintenance

1.5 ms

index: do_read_index ×2

1.2 ms

index: refresh

0.6 ms

dir: read_directory

0.4 ms

index: name-hash-init

0.3 ms

cache_tree: update ×2

0.2 ms

unpack_trees: unpack_trees

0.1 ms

unpack_trees: traverse_trees

0.1 ms

cache_tree: read ×2

0.1 ms

cache_tree: write ×2

0.0 ms

diff: setup

0.0 ms

diff: write

0.0 ms

grit · median run 18 ms

grit.index.write ×2

5.3 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	26 ms	18 ms	1.5× faster	25 MB
2026-10-26	c7cf2c443	38 ms	35 ms	1.1× faster	32 MB
2026-10-25	2824ad391	29 ms	21 ms	1.4× faster	23 MB
2026-10-24	157a05dde	27 ms	22 ms	1.2× faster	23 MB
2026-10-23	bddf92f86	28 ms	23 ms	1.2× faster	23 MB
2026-10-22	4c131b942	28 ms	26 ms	1.1× faster	22 MB
2026-10-21	d4844e92a	27 ms	33 ms	1.2× slower	21 MB
2026-10-20	4754ad0b9	30 ms	36 ms	1.2× slower	22 MB