[PATCH v4 12/13] core.fsyncmethod: performance tests for add and stash

From

NGNeeraj Singh via GitGitGadget <gitgitgadget@gmail.com>

Date

Mar 29, 2022, 00:42 UTC

Message-ID

<fdf90d45f52d72cf2ff7fe6b620853da9fafc1b3.1648514553.git.gitgitgadget@gmail.com>

In-Reply-To

<pull.1134.v4.git.1648514552.gitgitgadget@gmail.com>

From: Neeraj Singh <neerajsi@microsoft.com>

Signed-off-by: Neeraj Singh <neerajsi@microsoft.com>
---
 t/perf/p3700-add.sh | 59 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100755 t/perf/p3700-add.sh

diff --git a/t/perf/p3700-add.sh b/t/perf/p3700-add.sh
new file mode 100755
index 00000000000..ef6024f9897
--- /dev/null
+++ b/t/perf/p3700-add.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+#
+# This test measures the performance of adding new files to the object database
+# and index. The test was originally added to measure the effect of the
+# core.fsyncMethod=batch mode, which is why we are testing different values
+# of that setting explicitly and creating a lot of unique objects.
+
+test_description="Tests performance of adding things to the object database"
+
+# Fsync is normally turned off for the test suite.
+GIT_TEST_FSYNC=1
+export GIT_TEST_FSYNC
+
+. ./perf-lib.sh
+
+. $TEST_DIRECTORY/lib-unique-files.sh
+
+test_perf_fresh_repo
+test_checkout_worktree
+
+dir_count=10
+files_per_dir=50
+total_files=$((dir_count * files_per_dir))
+
+for mode in false true batch
+do
+	case $mode in
+	false)
+		FSYNC_CONFIG='-c core.fsync=-loose-object -c core.fsyncmethod=fsync'
+		;;
+	true)
+		FSYNC_CONFIG='-c core.fsync=loose-object -c core.fsyncmethod=fsync'
+		;;
+	batch)
+		FSYNC_CONFIG='-c core.fsync=loose-object -c core.fsyncmethod=batch'
+		;;
+	esac
+
+	test_perf "add $total_files files (object_fsyncing=$mode)" \
+		--setup "
+		(rm -rf .git || 1) &&
+		git init &&
+		test_create_unique_files $dir_count $files_per_dir files_$mode
+	" "
+		git $FSYNC_CONFIG add files_$mode
+	"
+
+	test_perf "stash $total_files files (object_fsyncing=$mode)" \
+		--setup "
+		(rm -rf .git || 1) &&
+		git init &&
+		test_commit first &&
+		test_create_unique_files $dir_count $files_per_dir stash_files_$mode
+	" "
+		git $FSYNC_CONFIG stash push -u -- stash_files_$mode
+	"
+done
+
+test_done

-- 
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