summaryrefslogtreecommitdiffstats
path: root/t/perf/lib-bitmap.sh
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:47:53 +0000
commitc8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch)
tree24e09d9f84dec336720cf393e156089ca2835791 /t/perf/lib-bitmap.sh
parentInitial commit. (diff)
downloadgit-c8bae7493d2f2910b57f13ded012e86bdcfb0532.tar.xz
git-c8bae7493d2f2910b57f13ded012e86bdcfb0532.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/lib-bitmap.sh')
-rw-r--r--t/perf/lib-bitmap.sh100
1 files changed, 100 insertions, 0 deletions
diff --git a/t/perf/lib-bitmap.sh b/t/perf/lib-bitmap.sh
new file mode 100644
index 0000000..55a8feb
--- /dev/null
+++ b/t/perf/lib-bitmap.sh
@@ -0,0 +1,100 @@
+# Helper functions for testing bitmap performance; see p5310.
+
+test_full_bitmap () {
+ test_perf 'simulated clone' '
+ git pack-objects --stdout --all </dev/null >/dev/null
+ '
+
+ test_perf 'simulated fetch' '
+ have=$(git rev-list HEAD~100 -1) &&
+ {
+ echo HEAD &&
+ echo ^$have
+ } | git pack-objects --revs --stdout >/dev/null
+ '
+
+ test_perf 'pack to file (bitmap)' '
+ git pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null
+ '
+
+ test_perf 'rev-list (commits)' '
+ git rev-list --all --use-bitmap-index >/dev/null
+ '
+
+ test_perf 'rev-list (objects)' '
+ git rev-list --all --use-bitmap-index --objects >/dev/null
+ '
+
+ test_perf 'rev-list with tag negated via --not --all (objects)' '
+ git rev-list perf-tag --not --all --use-bitmap-index --objects >/dev/null
+ '
+
+ test_perf 'rev-list with negative tag (objects)' '
+ git rev-list HEAD --not perf-tag --use-bitmap-index --objects >/dev/null
+ '
+
+ test_perf 'rev-list count with blob:none' '
+ git rev-list --use-bitmap-index --count --objects --all \
+ --filter=blob:none >/dev/null
+ '
+
+ test_perf 'rev-list count with blob:limit=1k' '
+ git rev-list --use-bitmap-index --count --objects --all \
+ --filter=blob:limit=1k >/dev/null
+ '
+
+ test_perf 'rev-list count with tree:0' '
+ git rev-list --use-bitmap-index --count --objects --all \
+ --filter=tree:0 >/dev/null
+ '
+
+ test_perf 'simulated partial clone' '
+ git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null
+ '
+}
+
+test_partial_bitmap () {
+ test_perf 'clone (partial bitmap)' '
+ git pack-objects --stdout --all </dev/null >/dev/null
+ '
+
+ test_perf 'pack to file (partial bitmap)' '
+ git pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null
+ '
+
+ test_perf 'rev-list with tree filter (partial bitmap)' '
+ git rev-list --use-bitmap-index --count --objects --all \
+ --filter=tree:0 >/dev/null
+ '
+}
+
+test_pack_bitmap () {
+ test_perf "repack to disk" '
+ git repack -ad
+ '
+
+ test_full_bitmap
+
+ test_expect_success "create partial bitmap state" '
+ # 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 kill off all of the refs and pretend we had
+ # just the 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 &&
+
+ # and now restore our original tip, as if the pushes
+ # had happened
+ git update-ref HEAD $orig_tip
+ '
+
+ test_partial_bitmap
+}