grit://cooking/bench/clone/local@synth-10k

grit clone · local @synth-10k

Clone over smart HTTP from git http-backend vs git clone

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

tool	median	min	max	runs	peak memory
git	955 ms	949 ms	964 ms	5	35 MB
grit	929 ms	923 ms	935 ms	5	31 MB

grit is parmemory: 1.1× less

every timed run (log scale)

git

grit

733 ms1.21 s

How it's measured

setup

remote http://127.0.0.1:40091/remote.git served by git http-backend (git's own smart HTTP server)

before each run

grit-bench prepare-network-clone --git git --bare /tmp/grit-bench-scratch/daily-remote-synth-10k-clone/remote.git

git runs

$ rm -rf /tmp/grit-bench-scratch/daily-remote-synth-10k-clone/remote.git-campaign-clone && cd /tmp/grit-bench-scratch/daily-remote-synth-10k-clone && git clone -q http://127.0.0.1:40091/remote.git remote.git-campaign-clone

grit runs

$ rm -rf /tmp/grit-bench-scratch/daily-remote-synth-10k-clone/remote.git-campaign-clone && cd /tmp/grit-bench-scratch/daily-remote-synth-10k-clone && grit clone  http://127.0.0.1:40091/remote.git remote.git-campaign-clone

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 955 ms

run: git remote-http

823 ms

run: git-remote-http

821 ms

run: git fetch-pack

805 ms

run: git index-pack

355 ms

unpack_trees: unpack_trees

121 ms

unpack_trees: traverse_trees

3.4 ms

cache_tree: update

2.5 ms

index: do_write_index

2.3 ms

run: git rev-list

1.4 ms

fetch-pack: mark_common_remote_refs

0.6 ms

fetch-pack: parse_remote_refs_and_find_cutoff

0.5 ms

cache_tree: write

0.0 ms

fetch-pack: mark_complete_local_refs

0.0 ms

fetch-pack: negotiation_v0_v1

0.0 ms

grit · median run 929 ms

grit.pack.index

140 ms

grit.pack.delta.resolve

123 ms

grit.index.write

1.4 ms

grit.index.read ×2

0.7 ms

grit.repository.open ×3

0.4 ms

grit.config.load ×5

0.2 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	955 ms	929 ms	par	31 MB
2026-10-26	c7cf2c443	1.02 s	1.24 s	1.2× slower	31 MB
2026-10-25	2824ad391	1.10 s	1.13 s	par	28 MB
2026-10-24	157a05dde	1.02 s	1.14 s	1.1× slower	44 MB
2026-10-23	bddf92f86	950 ms	698 ms	1.4× faster	79 MB
2026-10-22	4c131b942	983 ms	676 ms	1.5× faster	65 MB
2026-10-21	d4844e92a	941 ms	695 ms	1.4× faster	65 MB
2026-10-20	4754ad0b9	1.02 s	7.35 s	7.2× slower	117 MB