From: "René Scharfe" <l.s.r@web.de>
To: Git List <git@vger.kernel.org>
Cc: Junio C Hamano <gitster@pobox.com>
Subject: [PATCH 7/9] p0071: measure sorting of already sorted and reversed files
Date: Fri, 1 Oct 2021 11:19:04 +0200 [thread overview]
Message-ID: <3fa28f14-5e53-7367-b628-6eab2d5737be@web.de> (raw)
In-Reply-To: <943b1e01-465e-5def-a766-0adf667690de@web.de>
Check if sorting takes advantage of already sorted or reversed content,
or if that corner case actually decreases performance, like it would for
a simplistic quicksort implementation.
Signed-off-by: René Scharfe <l.s.r@web.de>
---
t/perf/p0071-sort.sh | 29 ++++++++++++++++++++++-------
1 file changed, 22 insertions(+), 7 deletions(-)
diff --git a/t/perf/p0071-sort.sh b/t/perf/p0071-sort.sh
index 6e924f5fa3..5b39b68f35 100755
--- a/t/perf/p0071-sort.sh
+++ b/t/perf/p0071-sort.sh
@@ -11,16 +11,31 @@ test_expect_success 'setup' '
git cat-file --batch >unsorted
'
-test_perf 'sort(1)' '
- sort <unsorted >expect
+test_perf 'sort(1) unsorted' '
+ sort <unsorted >sorted
'
-test_perf 'string_list_sort()' '
- test-tool string-list sort <unsorted >actual
+test_expect_success 'reverse' '
+ sort -r <unsorted >reversed
'
-test_expect_success 'string_list_sort() sorts like sort(1)' '
- test_cmp_bin expect actual
-'
+for file in sorted reversed
+do
+ test_perf "sort(1) $file" "
+ sort <$file >actual
+ "
+done
+
+for file in unsorted sorted reversed
+do
+
+ test_perf "string_list_sort() $file" "
+ test-tool string-list sort <$file >actual
+ "
+
+ test_expect_success "string_list_sort() $file sorts like sort(1)" "
+ test_cmp_bin sorted actual
+ "
+done
test_done
--
2.33.0
next prev parent reply other threads:[~2021-10-01 9:19 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 9:07 [PATCH 0/9] mergesort: improve tests and performance René Scharfe
2021-10-01 9:10 ` [PATCH 1/9] test-mergesort: use strbuf_getline() René Scharfe
2021-10-02 9:08 ` Ævar Arnfjörð Bjarmason
2021-10-02 16:56 ` René Scharfe
2021-10-01 9:11 ` [PATCH 2/9] test-mergesort: add sort subcommand René Scharfe
2021-10-01 20:26 ` Junio C Hamano
2021-10-01 9:12 ` [PATCH 3/9] test-mergesort: add test subcommand René Scharfe
2021-10-01 20:26 ` Junio C Hamano
2021-10-02 8:35 ` Ævar Arnfjörð Bjarmason
2021-10-03 10:15 ` René Scharfe
2021-10-03 17:33 ` Junio C Hamano
2021-10-07 20:00 ` René Scharfe
2021-10-08 4:04 ` [PATCH 10/9 v2] test-mergesort: use repeatable random numbers René Scharfe
2021-10-08 4:17 ` Jeff King
2021-10-08 7:23 ` Ævar Arnfjörð Bjarmason
2021-10-08 17:30 ` René Scharfe
2021-10-08 19:00 ` Ævar Arnfjörð Bjarmason
2021-10-03 10:15 ` [PATCH 3/9] test-mergesort: add test subcommand René Scharfe
2021-10-01 9:14 ` [PATCH 4/9] test-mergesort: add generate subcommand René Scharfe
2021-10-01 9:16 ` [PATCH 5/9] test-mergesort: add unriffle mode René Scharfe
2021-10-01 9:17 ` [PATCH 6/9] test-mergesort: add unriffle_skewed mode René Scharfe
2021-10-01 9:19 ` René Scharfe [this message]
2021-10-01 9:19 ` [PATCH 8/9] p0071: test performance of llist_mergesort() René Scharfe
2021-10-01 9:22 ` [PATCH 9/9] mergesort: use ranks stack René Scharfe
2022-01-17 17:43 ` Ævar Arnfjörð Bjarmason
2022-01-17 18:22 ` René Scharfe
2022-01-18 5:07 ` René Scharfe
2022-01-18 10:40 ` Ævar Arnfjörð Bjarmason
2022-01-18 12:27 ` René Scharfe
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