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authorPatrick Steinhardt <ps@pks.im>2020-11-13 08:12:41 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-11-16 21:44:01 (GMT)
commit21020430a4a08d2e31c1c6825e53f194569c706c (patch)
treec15a1981749ca350be5099938a935adb2063d924 /t/perf/p1400-update-ref.sh
parent262a4d28feb26aff89705b3254cdfc015eaa3ef9 (diff)
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p1400: use `git-update-ref --stdin` to test multiple transactions
In commit 0a0fbbe3ff (refs: remove lookup cache for reference-transaction hook, 2020-08-25), a new benchmark was added to p1400 which has the intention to exercise creation of multiple transactions in a single process. As git-update-ref wasn't yet able to create multiple transactions with a single run we instead used git-push. As its non-atomic version creates a transaction per reference update, this was the best approximation we could make at that point in time. Now that `git-update-ref --stdin` supports creation of multiple transactions, let's convert the benchmark to use that instead. It has less overhead and it's also a lot clearer what the actual intention is. Signed-off-by: Patrick Steinhardt <ps@pks.im> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/perf/p1400-update-ref.sh')
-rwxr-xr-xt/perf/p1400-update-ref.sh20
1 files changed, 7 insertions, 13 deletions
diff --git a/t/perf/p1400-update-ref.sh b/t/perf/p1400-update-ref.sh
index ce5ac3e..dda8a74 100755
--- a/t/perf/p1400-update-ref.sh
+++ b/t/perf/p1400-update-ref.sh
@@ -7,13 +7,14 @@ test_description="Tests performance of update-ref"
test_perf_fresh_repo
test_expect_success "setup" '
- git init --bare target-repo.git &&
test_commit PRE &&
test_commit POST &&
- printf "create refs/heads/%d PRE\n" $(test_seq 1000) >create &&
- printf "update refs/heads/%d POST PRE\n" $(test_seq 1000) >update &&
- printf "delete refs/heads/%d POST\n" $(test_seq 1000) >delete &&
- git update-ref --stdin <create
+ for i in $(test_seq 5000)
+ do
+ printf "start\ncreate refs/heads/%d PRE\ncommit\n" $i &&
+ printf "start\nupdate refs/heads/%d POST PRE\ncommit\n" $i &&
+ printf "start\ndelete refs/heads/%d POST\ncommit\n" $i
+ done >instructions
'
test_perf "update-ref" '
@@ -26,14 +27,7 @@ test_perf "update-ref" '
'
test_perf "update-ref --stdin" '
- git update-ref --stdin <update &&
- git update-ref --stdin <delete &&
- git update-ref --stdin <create
-'
-
-test_perf "nonatomic push" '
- git push ./target-repo.git $(test_seq 1000) &&
- git push --delete ./target-repo.git $(test_seq 1000)
+ git update-ref --stdin <instructions >/dev/null
'
test_done