grit://cooking/bench/repack/full@git-git

grit repack · full @git-git

grit gc repack vs git repack -ad on git.git worktree

repo: Upstream git/git pinned at v2.47.0, full history · 4,525 files · 75,031 commits · 954 refs

$ grit-bench daily --only repack/full@git-git2026-10-27 · grit 8dbc58e77 · git version 2.43.0

tool	median	min	max	runs	peak memory
git	4.42 s	4.39 s	4.50 s	5	454 MB
grit	5.34 s	5.28 s	5.50 s	5	529 MB

grit is 1.2× slowermemory: 1.2× more

every timed run (log scale)

git

grit

3.49 s6.92 s

How it's measured

before each run

set -eu 'grit-bench' prepare-daily-reset --git git

git runs

$ git repack -ad

grit runs

$ grit gc repack

checked first

before timing, git and grit were each run once and their results compared

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

git · median run 4.42 s

run: git pack-objects

4.34 s

pack-objects: enumerate-objects

2.93 s

pack-objects: write-pack-file

1.23 s

pack-objects: prepare-pack

167 ms

index: do_read_index

0.4 ms

cache_tree: read

0.0 ms

grit · median run 5.34 s

grit.index.read

0.6 ms

grit.repository.open ×2

0.3 ms

grit.config.load ×3

0.1 ms

grit.pack.index.open ×2

0.0 ms

Every day8 days

date	grit commit	git	grit	grit vs git	grit peak
2026-10-27	8dbc58e77	4.42 s	5.34 s	1.2× slower	529 MB
2026-10-26	c7cf2c443	5.81 s	7.52 s	1.3× slower	532 MB
2026-10-25	2824ad391	4.59 s	6.10 s	1.3× slower	531 MB
2026-10-24	157a05dde	4.82 s	12.60 s	2.6× slower	1012 MB
2026-10-23	bddf92f86	—	fail	—	—
2026-10-22	4c131b942	—	fail	—	—
2026-10-21	d4844e92a	—	fail	—	—
2026-10-20	4754ad0b9	—	fail	—	—