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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
commit | c8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch) | |
tree | 24e09d9f84dec336720cf393e156089ca2835791 /t/perf/p5326-multi-pack-bitmaps.sh | |
parent | Initial commit. (diff) | |
download | git-17a789943131483bc454986d1be6da6caaabce8c.tar.xz git-17a789943131483bc454986d1be6da6caaabce8c.zip |
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/perf/p5326-multi-pack-bitmaps.sh')
-rwxr-xr-x | t/perf/p5326-multi-pack-bitmaps.sh | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/t/perf/p5326-multi-pack-bitmaps.sh b/t/perf/p5326-multi-pack-bitmaps.sh new file mode 100755 index 0000000..d082e6c --- /dev/null +++ b/t/perf/p5326-multi-pack-bitmaps.sh @@ -0,0 +1,67 @@ +#!/bin/sh + +test_description='Tests performance using midx bitmaps' +. ./perf-lib.sh +. "${TEST_DIRECTORY}/perf/lib-bitmap.sh" + +test_bitmap () { + local enabled="$1" + + test_expect_success "remove existing repo (lookup=$enabled)" ' + rm -fr * .git + ' + + test_perf_large_repo + + # we need to create the tag up front such that it is covered by the repack and + # thus by generated bitmaps. + test_expect_success 'create tags' ' + git tag --message="tag pointing to HEAD" perf-tag HEAD + ' + + test_expect_success "use lookup table: $enabled" ' + git config pack.writeBitmapLookupTable '"$enabled"' + ' + + test_expect_success "start with bitmapped pack (lookup=$enabled)" ' + git repack -adb + ' + + test_perf "setup multi-pack index (lookup=$enabled)" ' + git multi-pack-index write --bitmap + ' + + test_expect_success "drop pack bitmap (lookup=$enabled)" ' + rm -f .git/objects/pack/pack-*.bitmap + ' + + test_full_bitmap + + test_expect_success "create partial bitmap state (lookup=$enabled)" ' + # pick a commit to represent the repo tip in the past + cutoff=$(git rev-list HEAD~100 -1) && + orig_tip=$(git rev-parse HEAD) && + + # now pretend we have just one tip + rm -rf .git/logs .git/refs/* .git/packed-refs && + git update-ref HEAD $cutoff && + + # and then repack, which will leave us with a nice + # big bitmap pack of the "old" history, and all of + # the new history will be loose, as if it had been pushed + # up incrementally and exploded via unpack-objects + git repack -Ad && + git multi-pack-index write --bitmap && + + # and now restore our original tip, as if the pushes + # had happened + git update-ref HEAD $orig_tip + ' + + test_partial_bitmap +} + +test_bitmap false +test_bitmap true + +test_done |