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From: git@jeffhostetler.com
To: git@vger.kernel.org
Cc: gitster@pobox.com, peff@peff.net,
	Jeff Hostetler <jeffhost@microsoft.com>
Subject: [PATCH v4 1/4] p0004-read-tree: perf test to time read-tree
Date: Tue,  4 Apr 2017 21:08:44 +0000	[thread overview]
Message-ID: <20170404210847.50860-2-git@jeffhostetler.com> (raw)
In-Reply-To: <20170404210847.50860-1-git@jeffhostetler.com>

From: Jeff Hostetler <jeffhost@microsoft.com>

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
---
 t/perf/p0004-read-tree.sh | 84 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100755 t/perf/p0004-read-tree.sh

diff --git a/t/perf/p0004-read-tree.sh b/t/perf/p0004-read-tree.sh
new file mode 100755
index 0000000..ffbbf8e
--- /dev/null
+++ b/t/perf/p0004-read-tree.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+
+test_description="Tests performance of read-tree"
+
+. ./perf-lib.sh
+
+test_perf_default_repo
+test_checkout_worktree
+
+## usage: dir depth width files
+make_paths () {
+	for f in $(seq $4)
+	do
+		echo $1/file$f
+	done;
+	if test $2 -gt 0;
+	then
+		for w in $(seq $3)
+		do
+			make_paths $1/dir$w $(($2 - 1)) $3 $4
+		done
+	fi
+	return 0
+}
+
+fill_index () {
+	make_paths $1 $2 $3 $4 |
+	sed "s/^/100644 $EMPTY_BLOB	/" |
+	git update-index --index-info
+	return 0
+}
+
+br_base=xxx_base_xxx
+br_work=xxx_work_xxx
+
+new_dir=xxx_dir_xxx
+
+## (5, 10, 9) will create 999,999 files.
+## (4, 10, 9) will create  99,999 files.
+depth=5
+width=10
+files=9
+
+export br_base
+export br_work
+export new_dir
+export depth
+export width
+export files
+
+## The number of files in the xxx_base_xxx branch.
+nr_base=$(git ls-files | wc -l)
+export nr_base
+
+## Inflate the index with thousands of empty files and commit it.
+## Turn on sparse-checkout so that we don't have to populate them
+## later when we start switching branches.
+test_expect_success 'inflate the index' '
+	git reset --hard &&
+	git branch $br_base &&
+	git branch $br_work &&
+	git checkout $br_work &&
+	fill_index $new_dir $depth $width $files &&
+	git commit -m $br_work &&
+	echo $new_dir/file1 >.git/info/sparse-checkout &&
+	git config --local core.sparsecheckout 1 &&
+	git reset --hard
+'
+
+## The number of files in the xxx_work_xxx branch.
+nr_work=$(git ls-files | wc -l)
+export nr_work
+
+test_perf "read-tree ($nr_work)" '
+	git read-tree -m $br_base $br_work -n
+'
+
+test_perf "switch branches ($nr_base $nr_work)" '
+	git checkout $br_base &&
+	git checkout $br_work
+'
+
+
+test_done
-- 
2.9.3


  reply	other threads:[~2017-04-04 21:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-04 21:08 [PATCH v4 0/4] read-cache: speed up add_index_entry git
2017-04-04 21:08 ` git [this message]
2017-04-04 21:08 ` [PATCH v4 2/4] read-cache: add strcmp_offset function git
2017-04-04 21:08 ` [PATCH v4 3/4] test-strcmp-offset: created test for strcmp_offset git
2017-04-04 21:08 ` [PATCH v4 4/4] read-cache: speed up add_index_entry during checkout git

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