We have a function to create a bunch of irrelevant packs to
measure the expense of reprepare_packed_git(). Let's make
that available to other perf scripts.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
t/perf/lib-pack.sh | 29 +++++++++++++++++++++++++++++
t/perf/p5550-fetch-tags.sh | 25 ++-----------------------
2 files changed, 31 insertions(+), 23 deletions(-)
create mode 100644 t/perf/lib-pack.sh
diff --git a/t/perf/lib-pack.sh b/t/perf/lib-pack.sh
new file mode 100644
index 0000000000..501bb7b272
--- /dev/null
+++ b/t/perf/lib-pack.sh
@@ -0,0 +1,29 @@
+# Helpers for dealing with large numbers of packs.
+
+# create $1 nonsense packs, each with a single blob
+create_packs () {
+ perl -le '
+ my ($n) = @ARGV;
+ for (1..$n) {
+ print "blob";
+ print "data <<EOF";
+ print "$_";
+ print "EOF";
+ }
+ ' "$@" |
+ git fast-import &&
+
+ git cat-file --batch-all-objects --batch-check='%(objectname)' |
+ while read sha1
+ do
+ echo $sha1 | git pack-objects .git/objects/pack/pack
+ done
+}
+
+# create a large number of packs, disabling any gc which might
+# cause us to repack them
+setup_many_packs () {
+ git config gc.auto 0 &&
+ git config gc.autopacklimit 0 &&
+ create_packs 500
+}
diff --git a/t/perf/p5550-fetch-tags.sh b/t/perf/p5550-fetch-tags.sh
index a5dc39f86a..d0e0e019ea 100755
--- a/t/perf/p5550-fetch-tags.sh
+++ b/t/perf/p5550-fetch-tags.sh
@@ -20,6 +20,7 @@ start to show a noticeable performance problem on my machine, but without
taking too long to set up and run the tests.
'
. ./perf-lib.sh
+. "$TEST_DIRECTORY/perf/lib-pack.sh"
# make a long nonsense history on branch $1, consisting of $2 commits, each
# with a unique file pointing to the blob at $2.
@@ -44,26 +45,6 @@ create_tags () {
git update-ref --stdin
}
-# create $1 nonsense packs, each with a single blob
-create_packs () {
- perl -le '
- my ($n) = @ARGV;
- for (1..$n) {
- print "blob";
- print "data <<EOF";
- print "$_";
- print "EOF";
- }
- ' "$@" |
- git fast-import &&
-
- git cat-file --batch-all-objects --batch-check='%(objectname)' |
- while read sha1
- do
- echo $sha1 | git pack-objects .git/objects/pack/pack
- done
-}
-
test_expect_success 'create parent and child' '
git init parent &&
git -C parent commit --allow-empty -m base &&
@@ -84,9 +65,7 @@ test_expect_success 'populate parent tags' '
test_expect_success 'create child packs' '
(
cd child &&
- git config gc.auto 0 &&
- git config gc.autopacklimit 0 &&
- create_packs 500
+ setup_many_packs
)
'
--
2.15.0.494.g79a8547723
