From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Duy Nguyen <pclouds@gmail.com>
Cc: "Junio C Hamano" <gitster@pobox.com>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Jeff King" <peff@peff.net>, "Stefan Beller" <sbeller@google.com>,
git <git@vger.kernel.org>, "Thomas Rast" <tr@thomasrast.ch>,
"Phil Haack" <haacked@gmail.com>, "Jason Frey" <jfrey@redhat.com>,
"Philip Oakley" <philipoakley@iee.org>
Subject: Re: [PATCH 1/9] git_config_set: fix off-by-two
Date: Tue, 3 Apr 2018 17:47:44 +0200 (DST) [thread overview]
Message-ID: <nycvar.QRO.7.76.6.1804031744220.5026@qfpub.tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <CACsJy8Bt3AEZmjudL+scXqOC_oW1WtU0_QZVD9PM+drGbEBeVw@mail.gmail.com>
Hi Duy,
On Tue, 3 Apr 2018, Duy Nguyen wrote:
> On Tue, Apr 3, 2018 at 11:31 AM, Johannes Schindelin
> <Johannes.Schindelin@gmx.de> wrote:
> > It is very frustrating to spend that much time with only little gains
> > here and there (and BusyBox-w32 is simply not robust enough yet, apart
> > from also not showing a significant improvement in performance).
>
> You still use busybox-w32?
Yes.
> It's amazing that people still use it after the linux subsystem comes.
I use WSL myself. But you need to realize that WSL is only available on
Windows 10 (many users still use Windows 7), and it is a little tricky to
get to work in Docker containers, I heard, so I did not even try.
Also, many Windows users are unfamiliar with Linux, and forcing them to
learn and install a Linux distribution on their machine when all they want
is to use Git is a bit... much.
> busybox has a lot of commands built in (i.e. no new processes) and
> unless rmyorston did something more, the "fork" in ash shell should be
> as cheap as it could be: it simply serializes data and sends to the new
> process.
Yes, I had the pleasure of reading that code.
It might surprise you, but I had to come up with quite a bit of patches to
make the test suite pass. And it does not really pass, as I randomly get
hangs...
> If performance does not improve, I guess the process creation cost
> dominates. There's not much we could do except moving away from the
> zillion processes test framework: either something C-based or another
> scripting language (ok I don't want to bring this up again)
There is no need to guess. I now have .pdb files, and once I have a good
example of a shell script construct that is particularly slow, and once I
find some time to work on it, I will dig into the bottlenecks.
Ciao,
Dscho
next prev parent reply other threads:[~2018-04-03 15:48 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-29 15:18 [PATCH 0/9] Assorted fixes for `git config` (including the "empty sections" bug) Johannes Schindelin
2018-03-29 15:18 ` [PATCH 1/9] git_config_set: fix off-by-two Johannes Schindelin
2018-03-29 18:15 ` Stefan Beller
2018-03-29 19:41 ` Jeff King
2018-03-30 12:32 ` Johannes Schindelin
2018-03-30 14:15 ` Ævar Arnfjörð Bjarmason
2018-03-30 16:24 ` Junio C Hamano
2018-03-30 18:44 ` Johannes Schindelin
2018-03-30 19:00 ` Junio C Hamano
2018-04-03 9:31 ` Johannes Schindelin
2018-04-03 15:29 ` Duy Nguyen
2018-04-03 15:47 ` Johannes Schindelin [this message]
2018-04-08 23:12 ` Junio C Hamano
2018-03-30 16:36 ` Duy Nguyen
2018-03-30 18:53 ` Johannes Schindelin
2018-03-30 19:16 ` Duy Nguyen
2018-03-30 18:45 ` A potential approach to making tests faster on Windows Ævar Arnfjörð Bjarmason
2018-03-30 18:58 ` Junio C Hamano
2018-03-30 19:16 ` Jeff King
2018-04-03 9:49 ` Johannes Schindelin
2018-04-03 11:28 ` Ævar Arnfjörð Bjarmason
2018-04-03 15:55 ` Johannes Schindelin
2018-04-03 21:36 ` Eric Sunshine
2018-04-03 11:43 ` Johannes Schindelin
2018-04-03 13:27 ` Jeff King
2018-04-03 16:00 ` Johannes Schindelin
2018-04-06 21:40 ` Jeff King
2018-04-06 21:57 ` Stefan Beller
2018-03-29 15:18 ` [PATCH 2/9] t1300: rename it to reflect that `repo-config` was deprecated Johannes Schindelin
2018-03-29 19:42 ` Jeff King
2018-03-30 12:37 ` Johannes Schindelin
2018-03-29 15:18 ` [PATCH 3/9] t1300: avoid relying on a bug Johannes Schindelin
2018-03-29 19:43 ` Jeff King
2018-03-30 12:38 ` Johannes Schindelin
2018-03-29 15:18 ` [PATCH 4/9] t1300: remove unreasonable expectation from TODO Johannes Schindelin
2018-03-29 19:52 ` Jeff King
2018-03-29 20:45 ` Junio C Hamano
2018-03-30 12:42 ` Johannes Schindelin
2018-03-29 15:18 ` [PATCH 5/9] t1300: `--unset-all` can leave an empty section behind (bug) Johannes Schindelin
2018-03-29 19:54 ` Jeff King
2018-03-29 15:18 ` [PATCH 6/9] git_config_set: simplify the way the section name is remembered Johannes Schindelin
2018-03-29 15:19 ` [PATCH 7/9] git config --unset: remove empty sections (in normal situations) Johannes Schindelin
2018-03-29 21:32 ` Jeff King
2018-03-30 13:00 ` Johannes Schindelin
2018-03-30 13:09 ` Jeff King
2018-03-29 15:19 ` [PATCH 8/9] git_config_set: use do_config_from_file() directly Johannes Schindelin
2018-03-29 21:38 ` Jeff King
2018-03-30 13:02 ` Johannes Schindelin
2018-03-30 13:14 ` Jeff King
2018-03-30 14:01 ` Johannes Schindelin
2018-03-30 14:08 ` Jeff King
2018-03-30 19:04 ` Johannes Schindelin
2018-03-29 15:19 ` [PATCH 9/9] git_config_set: reuse empty sections Johannes Schindelin
2018-03-29 21:50 ` Jeff King
2018-03-30 13:15 ` Johannes Schindelin
2018-03-29 17:58 ` [PATCH 0/9] Assorted fixes for `git config` (including the "empty sections" bug) Stefan Beller
2018-03-30 12:14 ` Johannes Schindelin
2018-03-29 19:39 ` Jeff King
2018-03-30 12:35 ` Johannes Schindelin
2018-03-30 14:17 ` Ævar Arnfjörð Bjarmason
2018-03-30 18:46 ` Johannes Schindelin
2018-04-03 16:27 ` [PATCH v2 00/15] " Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 01/15] git_config_set: fix off-by-two Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 02/15] t1300: rename it to reflect that `repo-config` was deprecated Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 03/15] t1300: demonstrate that --replace-all can "invent" newlines Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 04/15] config --replace-all: avoid extra line breaks Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 05/15] t1300: avoid relying on a bug Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 06/15] t1300: remove unreasonable expectation from TODO Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 07/15] t1300: `--unset-all` can leave an empty section behind (bug) Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 08/15] config: introduce an optional event stream while parsing Johannes Schindelin
2018-04-06 21:22 ` Jeff King
2018-04-09 7:35 ` Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 09/15] config: avoid using the global variable `store` Johannes Schindelin
2018-04-06 21:23 ` Jeff King
2018-04-09 7:36 ` Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 10/15] config_set_store: rename some fields for consistency Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 11/15] git_config_set: do not use a state machine Johannes Schindelin
2018-04-06 21:28 ` Jeff King
2018-04-09 7:50 ` Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 12/15] git_config_set: make use of the config parser's event stream Johannes Schindelin
2018-04-03 16:28 ` [PATCH v2 13/15] git config --unset: remove empty sections (in the common case) Johannes Schindelin
2018-04-03 16:29 ` [PATCH v2 14/15] git_config_set: reuse empty sections Johannes Schindelin
2018-04-03 16:30 ` [PATCH v2 00/15] Assorted fixes for `git config` (including the "empty sections" bug) Johannes Schindelin
2018-04-06 21:33 ` Jeff King
2018-04-09 8:19 ` Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 " Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 01/15] git_config_set: fix off-by-two Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 02/15] t1300: rename it to reflect that `repo-config` was deprecated Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 03/15] t1300: demonstrate that --replace-all can "invent" newlines Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 04/15] config --replace-all: avoid extra line breaks Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 05/15] t1300: avoid relying on a bug Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 06/15] t1300: remove unreasonable expectation from TODO Johannes Schindelin
2018-04-09 8:31 ` [PATCH v3 07/15] t1300: add a few more hairy examples of sections becoming empty Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 08/15] t1300: `--unset-all` can leave an empty section behind (bug) Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 09/15] config: introduce an optional event stream while parsing Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 10/15] config: avoid using the global variable `store` Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 11/15] config_set_store: rename some fields for consistency Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 12/15] git_config_set: do not use a state machine Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 13/15] git_config_set: make use of the config parser's event stream Johannes Schindelin
2018-05-08 13:42 ` Jeff King
2018-05-08 14:00 ` Jeff King
2018-04-09 8:32 ` [PATCH v3 14/15] git config --unset: remove empty sections (in the common case) Johannes Schindelin
2018-04-09 8:32 ` [PATCH v3 15/15] git_config_set: reuse empty sections Johannes Schindelin
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