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| author | Phillip Wood <phillip.wood@dunelm.org.uk> | 2025-07-28 22:05:19 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2025-07-28 12:33:54 -0700 |
| commit | 41d97837ab1e5a35fdcfd7f6af9b5d56af62e92a (patch) | |
| tree | 7b830b33cba98a8a7bf55c8e7de05a539cfe8287 /commit-graph.c | |
| parent | e813a0200a7121b97fec535f0d0b460b0a33356c (diff) | |
xdiff: refactor xdl_hash_record()
Inline the check for whitespace flags so that the compiler can hoist
it out of the loop in xdl_prepare_ctx(). This improves the performance
by 8%.
$ hyperfine --warmup=1 -L rev HEAD,HEAD^ --setup='git checkout {rev} -- :/ && make git' ': {rev}; GIT_CONFIG_GLOBAL=/dev/null ./git log --oneline --shortstat v2.0.0..v2.5.0'
Benchmark 1: : HEAD; GIT_CONFIG_GLOBAL=/dev/null ./git log --oneline --shortstat v2.0.0..v2.5.0
Time (mean ± σ): 1.670 s ± 0.044 s [User: 1.473 s, System: 0.196 s]
Range (min … max): 1.619 s … 1.754 s 10 runs
Benchmark 2: : HEAD^; GIT_CONFIG_GLOBAL=/dev/null ./git log --oneline --shortstat v2.0.0..v2.5.0
Time (mean ± σ): 1.801 s ± 0.021 s [User: 1.605 s, System: 0.192 s]
Range (min … max): 1.766 s … 1.831 s 10 runs
Summary
': HEAD^; GIT_CONFIG_GLOBAL=/dev/null ./git log --oneline --shortstat v2.0.0..v2.5.0' ran
1.08 ± 0.03 times faster than ': HEAD^^; GIT_CONFIG_GLOBAL=/dev/null ./git log --oneline --shortstat v2.0.0..v2.5.0'
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'commit-graph.c')
0 files changed, 0 insertions, 0 deletions