From: "René Scharfe" <l.s.r@web.de>
To: Git List <git@vger.kernel.org>
Cc: Junio C Hamano <gitster@pobox.com>
Subject: [PATCH 0/9] mergesort: improve tests and performance
Date: Fri, 1 Oct 2021 11:07:00 +0200 [thread overview]
Message-ID: <943b1e01-465e-5def-a766-0adf667690de@web.de> (raw)
Our mergesort for linked lists doesn't allocate temporary memory, which
is nice. It is traversing the list multiple times from start to finish,
though. This series teaches it to avoid that, which speeds it up
considerably. But first it improves the associated test helper to
exercise the code harder and to make the effect of the changes visible
in terms of saved operations.
test-mergesort: use strbuf_getline()
test-mergesort: add sort subcommand
test-mergesort: add test subcommand
test-mergesort: add generate subcommand
test-mergesort: add unriffle mode
test-mergesort: add unriffle_skewed mode
p0071: measure sorting of already sorted and reversed files
p0071: test performance of llist_mergesort()
mergesort: use ranks stack
mergesort.c | 121 +++++++------
t/helper/test-mergesort.c | 360 +++++++++++++++++++++++++++++++++++++-
t/perf/p0071-sort.sh | 40 ++++-
t/t0071-sort.sh | 11 ++
4 files changed, 465 insertions(+), 67 deletions(-)
create mode 100755 t/t0071-sort.sh
--
2.33.0
next reply other threads:[~2021-10-01 9:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-01 9:07 René Scharfe [this message]
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 ` [PATCH 7/9] p0071: measure sorting of already sorted and reversed files René Scharfe
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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