From: Toon Claes <toon@iotcl.com>
Date: Tue, 5 Aug 2025 09:33:57 +0000 (+0200)
Subject: t/perf: add last-modified perf script
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=97d5301c54152d91a4e47449f759567f83140d4f;p=thirdparty%2Fgit.git

t/perf: add last-modified perf script

This just runs some simple last-modified commands. We already test
correctness in the regular suite, so this is just about finding
performance regressions from one version to another.

Based-on-patch-by: Jeff King <peff@peff.net>
Signed-off-by: Toon Claes <toon@iotcl.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/t/meson.build b/t/meson.build
index 904455e3ab..b74125b047 100644
--- a/t/meson.build
+++ b/t/meson.build
@@ -1155,6 +1155,7 @@ benchmarks = [
   'perf/p7820-grep-engines.sh',
   'perf/p7821-grep-engines-fixed.sh',
   'perf/p7822-grep-perl-character.sh',
+  'perf/p8020-last-modified.sh',
   'perf/p9210-scalar.sh',
   'perf/p9300-fast-import-export.sh',
 ]
diff --git a/t/perf/p8020-last-modified.sh b/t/perf/p8020-last-modified.sh
new file mode 100755
index 0000000000..cb1f98d3db
--- /dev/null
+++ b/t/perf/p8020-last-modified.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+test_description='last-modified perf tests'
+. ./perf-lib.sh
+
+test_perf_default_repo
+
+test_perf 'top-level last-modified' '
+	git last-modified HEAD
+'
+
+test_perf 'top-level recursive last-modified' '
+	git last-modified -r HEAD
+'
+
+test_perf 'subdir last-modified' '
+	git ls-tree -d HEAD >subtrees &&
+	path="$(head -n 1 subtrees | cut -f2)" &&
+	git last-modified -r HEAD -- "$path"
+'
+
+test_done