grit://cooking/bench/gc/pack-refs@synth-10k
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grit gc · pack-refs @synth-10k

Pack loose tags via grit gc pack-refs vs git pack-refs

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 gc/pack-refs@synth-10k2026-10-27 · grit 8dbc58e77 · git version 2.43.0
toolmedianminmaxrunspeak memory
git1.6 ms1.4 ms2.0 ms206.7 MB
grit3.4 ms3.0 ms3.7 ms2015 MB
grit is 2.1× slowermemory: 2.3× more
every timed run (log scale)
git
grit
1.1 ms4.7 ms
How it's measured
before each run
set -eu 'grit-bench' prepare-daily-reset --git git 'grit-bench' prepare-daily-gc-seed --git git
git runs
$ git pack-refs
grit runs
$ grit gc pack-refs
Where the time goesone extra traced run per tool, outside the timed runs
git
— not traced
grit · median run 3.4 ms
grit.repository.open
0.3 ms
grit.config.load ×2
0.1 ms
Every day8 days
dategrit commitgitgritgrit vs gitgrit peak
2026-10-278dbc58e771.6 ms3.4 ms2.1× slower15 MB
2026-10-26c7cf2c4432.7 ms4.9 ms1.8× slower17 MB
2026-10-252824ad3911.6 ms3.8 ms2.4× slower15 MB
2026-10-24157a05dde2.2 ms4.5 ms2.0× slower14 MB
2026-10-23bddf92f862.2 ms4.4 ms2.0× slower15 MB
2026-10-224c131b9422.2 ms4.4 ms2.0× slower14 MB
2026-10-21d4844e92a2.2 ms4.4 ms2.0× slower14 MB
2026-10-204754ad0b92.6 ms4.7 ms1.8× slower13 MB