[PATCH 6/6] bitmap-lookup-table: add performance tests
From: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
Add performance tests for bitmap lookup table extension.
Mentored-by: Taylor Blau <ttaylorr@github.com>
Co-mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
---
t/perf/p5310-pack-bitmaps.sh | 60 +++++++++++++++++++-----------
t/perf/p5326-multi-pack-bitmaps.sh | 55 +++++++++++++++++----------
2 files changed, 73 insertions(+), 42 deletions(-)
diff --git a/t/perf/p5310-pack-bitmaps.sh b/t/perf/p5310-pack-bitmaps.sh
index 7ad4f237bc3..a8d9414de92 100755
--- a/t/perf/p5310-pack-bitmaps.sh
+++ b/t/perf/p5310-pack-bitmaps.sh
@@ -10,10 +10,11 @@ test_perf_large_repo
# since we want to be able to compare bitmap-aware
# git versus non-bitmap git
#
-# We intentionally use the deprecated pack.writebitmaps
+# We intentionally use the deprecated pack.writeBitmaps
# config so that we can test against older versions of git.
test_expect_success 'setup bitmap config' '
- git config pack.writebitmaps true
+ git config pack.writeBitmaps true &&
+ git config pack.writeReverseIndex true
'
# we need to create the tag up front such that it is covered by the repack and
@@ -28,27 +29,42 @@ test_perf 'repack to disk' '
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_perf 'use lookup table' '
+ git config pack.writeBitmapLookupTable true
'
-test_partial_bitmap
+test_perf 'repack to disk (lookup table)' '
+ git repack -adb
+'
+
+test_full_bitmap
+
+for i in false true
+do
+ $i && lookup=" (lookup table)"
+ test_expect_success "create partial bitmap state$lookup" '
+ git config pack.writeBitmapLookupTable '"$i"' &&
+ # pick a commit to represent the repo tip in the past
+ cutoff=$(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 $orig_tip
+ '
+
+ test_partial_bitmap
+done
test_done
diff --git a/t/perf/p5326-multi-pack-bitmaps.sh b/t/perf/p5326-multi-pack-bitmaps.sh
index f2fa228f16a..9001eb4533e 100755
--- a/t/perf/p5326-multi-pack-bitmaps.sh
+++ b/t/perf/p5326-multi-pack-bitmaps.sh
@@ -26,27 +26,42 @@ test_expect_success 'drop pack bitmap' '
test_full_bitmap
-test_expect_success 'create partial bitmap state' '
- # pick a commit to represent the repo tip in the past
- cutoff=$(git rev-list HEAD~100 -1) &&
- orig_tip=$(git rev-parse HEAD) &&
-
- # now 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_expect_success 'use lookup table' '
+ git config pack.writeBitmapLookupTable true
'
-test_partial_bitmap
+test_perf 'setup multi-pack-index (lookup table)' '
+ git multi-pack-index write --bitmap
+'
+
+test_full_bitmap
+
+for i in false true
+do
+ $i && lookup=" (lookup table)"
+ test_expect_success "create partial bitmap state$lookup" '
+ git config pack.writeBitmapLookupTable '"$i"' &&
+ # pick a commit to represent the repo tip in the past
+ cutoff=$(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
+done
test_done
--
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Abhradeep Chakraborty via GitGitGadget <gitgitgadget@gmail.com>