From: Eli Zaretskii <eliz@gnu.org>
To: "Peter Münster" <pmlists@free.fr>
Cc: larsi@gnus.org, 18522@debbugs.gnu.org
Subject: bug#18522: 24.4.50; mapcar is very slow
Date: Wed, 24 Feb 2016 20:23:40 +0200 [thread overview]
Message-ID: <83io1ege6r.fsf@gnu.org> (raw)
In-Reply-To: <87fuwikmzc.fsf@roche-blanche.net> (message from Peter Münster on Wed, 24 Feb 2016 19:00:07 +0100)
> From: Peter Münster <pmlists@free.fr>
> Cc: rudalics@gmx.at, larsi@gnus.org, 18522@debbugs.gnu.org
> Date: Wed, 24 Feb 2016 19:00:07 +0100
>
> perf report:
>
> 33.17% emacs emacs [.] Fset_default
>
> Uptime is only about 1 day now. Length of all_buffers is 207.
>
> perf annotate:
>
> --8<---------------cut here---------------start------------->8---
> │ Fset_default():
> │ set it in the buffers that don't nominally have a local value. */
> │ if (idx > 0)
> │ {
> │ struct buffer *b;
> │ int i = 0;
> │ FOR_EACH_BUFFER (b)
> 15.68 │101: mov 0x2d8(%rcx),%rcx
> 19.34 │ test %rcx,%rcx
> 5.39 │ ↑ jne f0
> │ {
> │ i++;
> │ if (!PER_BUFFER_VALUE_P (b, idx))
> │ set_per_buffer_value (b, offset, value);
> │ }
> │ fprintf(stderr, "XXXXX: %d\n", i);
> 0.07 │10d: mov stderr@@GLIBC_2.2.5,%rdi
> 2.49 │ mov $0x5e90e5,%esi
> │ xor %eax,%eax
> --8<---------------cut here---------------end--------------->8---
What is that "f0" there? Can you annotate it as well? Otherwise,
this makes no sense to me: the part that takes most of the time is 2
simple instructions. Sounds like we are looking at too small portion
of the code, so these are percents of a very small fraction of the
total running time.
next prev parent reply other threads:[~2016-02-24 18:23 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-22 10:37 bug#18522: 24.4.50; mapcar is very slow Peter Münster
2014-09-22 10:43 ` bug#18522: further information Peter Münster
2014-09-22 12:49 ` bug#18522: 24.4.50; mapcar is very slow Stefan Monnier
2014-09-22 13:47 ` Peter Münster
2014-09-25 21:36 ` Peter Münster
2014-09-26 6:57 ` Eli Zaretskii
2014-09-26 7:15 ` Peter Münster
2014-09-26 7:36 ` Eli Zaretskii
2014-10-01 19:55 ` Peter Münster
2014-10-01 19:58 ` Glenn Morris
2014-10-01 20:25 ` Peter Münster
2015-02-13 8:26 ` Lars Ingebrigtsen
2015-02-13 14:39 ` Peter Münster
2015-02-14 4:19 ` Lars Ingebrigtsen
2015-03-02 14:34 ` Peter Münster
2015-07-20 12:52 ` Peter Münster
2016-02-07 6:31 ` Lars Ingebrigtsen
2016-02-17 16:00 ` Peter Münster
2016-02-19 5:15 ` Lars Ingebrigtsen
2016-02-19 8:27 ` Peder O. Klingenberg
2016-02-19 8:38 ` Eli Zaretskii
2016-02-19 10:06 ` Nicolas Richard
2016-02-19 10:12 ` Peder O. Klingenberg
2016-02-19 22:46 ` Lars Ingebrigtsen
2016-02-20 8:14 ` Eli Zaretskii
2016-02-20 8:33 ` Peter Münster
2016-02-20 9:51 ` Eli Zaretskii
2016-02-21 11:00 ` Peter Münster
2016-02-21 11:08 ` Andreas Schwab
2016-02-21 11:09 ` martin rudalics
2016-02-21 11:30 ` Peter Münster
2016-02-21 13:41 ` Michael Heerdegen
2016-02-21 14:02 ` Peter Münster
2016-02-21 14:36 ` Peter Münster
2016-02-21 14:54 ` Peter Münster
2016-02-21 16:14 ` Eli Zaretskii
2016-02-21 18:03 ` Peter Münster
2016-02-21 20:45 ` Eli Zaretskii
2016-02-22 7:37 ` Peter Münster
2016-02-22 16:22 ` Eli Zaretskii
2016-02-22 20:41 ` Peter Münster
2016-02-22 20:56 ` Eli Zaretskii
2016-02-23 11:19 ` Peter Münster
2016-02-23 16:23 ` Eli Zaretskii
2016-02-23 16:35 ` Peter Münster
2016-02-23 16:48 ` Andreas Schwab
2016-02-24 10:22 ` Peter Münster
2016-02-23 17:47 ` Eli Zaretskii
2016-02-24 10:25 ` Peter Münster
2016-02-24 17:39 ` Eli Zaretskii
2016-02-24 18:00 ` Peter Münster
2016-02-24 18:23 ` Eli Zaretskii [this message]
2016-02-24 20:03 ` Peter Münster
2016-02-24 20:26 ` Eli Zaretskii
2016-02-25 8:06 ` Peter Münster
2016-02-24 23:53 ` Lars Ingebrigtsen
2016-02-25 8:08 ` Peter Münster
2016-02-25 15:59 ` Eli Zaretskii
2016-02-25 18:10 ` Peter Münster
2016-02-25 18:25 ` Eli Zaretskii
2016-02-26 11:05 ` Peter Münster
2016-02-26 11:13 ` Eli Zaretskii
2016-02-26 11:35 ` Peter Münster
2016-02-28 4:10 ` Lars Ingebrigtsen
2016-02-28 8:07 ` Peter Münster
2016-02-28 15:48 ` Eli Zaretskii
2016-02-29 2:21 ` Lars Ingebrigtsen
2016-02-29 10:33 ` bug#18522: killed buffers not GCed (was: bug#18522: 24.4.50; mapcar is very slow) Peter Münster
2016-02-28 5:12 ` bug#18522: 24.4.50; mapcar is very slow Lars Ingebrigtsen
2016-02-26 3:18 ` Lars Ingebrigtsen
2016-02-26 3:13 ` Lars Ingebrigtsen
2016-02-26 8:48 ` Eli Zaretskii
2016-02-28 4:02 ` Lars Ingebrigtsen
2016-02-26 9:28 ` Eli Zaretskii
2016-02-28 4:04 ` Lars Ingebrigtsen
2017-01-25 20:09 ` Lars Ingebrigtsen
2017-01-25 20:39 ` Peter Münster
2016-02-24 10:15 ` martin rudalics
2016-02-24 17:42 ` Eli Zaretskii
2016-02-24 18:16 ` martin rudalics
2016-02-24 18:49 ` martin rudalics
2016-02-24 20:27 ` Eli Zaretskii
2016-02-25 8:07 ` Peter Münster
2016-02-25 10:06 ` martin rudalics
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