summaryrefslogtreecommitdiffstats
path: root/t/perf/p5311-pack-bitmaps-fetch.sh
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:34:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:34:27 +0000
commit4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f (patch)
tree47c1d492e9c956c1cd2b74dbd3b9d8b0db44dc4e /t/perf/p5311-pack-bitmaps-fetch.sh
parentInitial commit. (diff)
downloadgit-4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f.tar.xz
git-4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f.zip
Adding upstream version 1:2.43.0.upstream/1%2.43.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/perf/p5311-pack-bitmaps-fetch.sh')
-rwxr-xr-xt/perf/p5311-pack-bitmaps-fetch.sh54
1 files changed, 54 insertions, 0 deletions
diff --git a/t/perf/p5311-pack-bitmaps-fetch.sh b/t/perf/p5311-pack-bitmaps-fetch.sh
new file mode 100755
index 0000000..426fab8
--- /dev/null
+++ b/t/perf/p5311-pack-bitmaps-fetch.sh
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+test_description='performance of fetches from bitmapped packs'
+. ./perf-lib.sh
+
+test_fetch_bitmaps () {
+ test_expect_success 'setup test directory' '
+ rm -fr * .git
+ '
+
+ test_perf_default_repo
+
+ test_expect_success 'create bitmapped server repo' '
+ git config pack.writebitmaps true &&
+ git config pack.writeBitmapLookupTable '"$1"' &&
+ git repack -ad
+ '
+
+ # simulate a fetch from a repository that last fetched N days ago, for
+ # various values of N. We do so by following the first-parent chain,
+ # and assume the first entry in the chain that is N days older than the current
+ # HEAD is where the HEAD would have been then.
+ for days in 1 2 4 8 16 32 64 128; do
+ title=$(printf '%10s' "($days days)")
+ test_expect_success "setup revs from $days days ago" '
+ now=$(git log -1 --format=%ct HEAD) &&
+ then=$(($now - ($days * 86400))) &&
+ tip=$(git rev-list -1 --first-parent --until=$then HEAD) &&
+ {
+ echo HEAD &&
+ echo ^$tip
+ } >revs
+ '
+
+ test_perf "server $title (lookup=$1)" '
+ git pack-objects --stdout --revs \
+ --thin --delta-base-offset \
+ <revs >tmp.pack
+ '
+
+ test_size "size $title" '
+ wc -c <tmp.pack
+ '
+
+ test_perf "client $title (lookup=$1)" '
+ git index-pack --stdin --fix-thin <tmp.pack
+ '
+ done
+}
+
+test_fetch_bitmaps true
+test_fetch_bitmaps false
+
+test_done