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Merge branch 'ty/perf-3400-optim' into next

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Improve set-up time of a perf test.

* ty/perf-3400-optim:
  t/perf/p3400: speed up setup using fast-import
This commit is contained in:
Junio C Hamano
2026-02-01 18:15:50 -08:00
parent 54b18a3513 8466efa4bd
commit 6c019af192
1 changed files with 38 additions and 15 deletions
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53
t/perf/p3400-rebase.sh
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@@ -9,21 +9,44 @@ test_expect_success 'setup rebasing on top of a lot of changes' '
git checkout -f -B base &&
git checkout -B to-rebase &&
git checkout -B upstream &&
for i in $(test_seq 100)
do
# simulate huge diffs
echo change$i >unrelated-file$i &&
test_seq 1000 >>unrelated-file$i &&
git add unrelated-file$i &&
test_tick &&
git commit -m commit$i unrelated-file$i &&
echo change$i >unrelated-file$i &&
test_seq 1000 | sort -nr >>unrelated-file$i &&
git add unrelated-file$i &&
test_tick &&
git commit -m commit$i-reverse unrelated-file$i ||
return 1
done &&
test_seq 1000 >content_fwd &&
sort -nr content_fwd >content_rev &&
(
for i in $(test_seq 100)
do
test_tick &&
echo "commit refs/heads/upstream" &&
echo "committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE" &&
echo "data <<EOF" &&
echo "commit$i" &&
echo "EOF" &&
if test "$i" = 1; then
echo "from refs/heads/upstream^0"
fi &&
echo "M 100644 inline unrelated-file$i" &&
echo "data <<EOF" &&
echo "change$i" &&
cat content_fwd &&
echo "EOF" &&
echo "commit refs/heads/upstream" &&
echo "committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE" &&
echo "data <<EOF" &&
echo "commit$i-reverse" &&
echo "EOF" &&
echo "M 100644 inline unrelated-file$i" &&
echo "data <<EOF" &&
echo "change$i" &&
cat content_rev &&
echo "EOF" || exit 1
done
) >fast_import_stream &&
git fast-import <fast_import_stream &&
git repack -a -d &&
git checkout -f upstream &&
git checkout to-rebase &&
test_commit our-patch interesting-file
'