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| author | Victoria Dye <vdye@github.com> | 2022-11-10 19:06:03 +0000 |
|---|---|---|
| committer | Taylor Blau <me@ttaylorr.com> | 2022-11-10 21:49:34 -0500 |
| commit | 0e47bca0f7592f8053ffcc530d8afa1d2e364563 (patch) | |
| tree | 3b9f052368b9ec903211b02b0fb08fca58957497 /t/perf | |
| parent | 68fcd48bafa1ef51b1ba40a41cb0fcdbad7acce1 (diff) | |
| download | git-0e47bca0f7592f8053ffcc530d8afa1d2e364563.tar.gz | |
reset: use 'skip_cache_tree_update' option
Enable the 'skip_cache_tree_update' option in the variants that call
'prime_cache_tree()' after 'unpack_trees()' (specifically, 'git reset
--mixed' and 'git reset --hard'). This avoids redundantly rebuilding the
cache tree in both 'cache_tree_update()' at the end of 'unpack_trees()' and
in 'prime_cache_tree()', resulting in a small (but consistent) performance
improvement. From the newly-added 'p7102-reset.sh' test:
Test before after
--------------------------------------------------------------------
7102.1: reset --hard (...) 2.11(0.40+1.54) 1.97(0.38+1.47) -6.6%
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Diffstat (limited to 't/perf')
| -rwxr-xr-x | t/perf/p7102-reset.sh | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/t/perf/p7102-reset.sh b/t/perf/p7102-reset.sh new file mode 100755 index 0000000000..9b039e8691 --- /dev/null +++ b/t/perf/p7102-reset.sh @@ -0,0 +1,21 @@ +#!/bin/sh + +test_description='performance of reset' +. ./perf-lib.sh + +test_perf_default_repo +test_checkout_worktree + +test_perf 'reset --hard with change in tree' ' + base=$(git rev-parse HEAD) && + test_commit --no-tag A && + new=$(git rev-parse HEAD) && + + for i in $(test_seq 10) + do + git reset --hard $new && + git reset --hard $base || return $? + done +' + +test_done |