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From: Stephen Berman <stephen.berman@gmx.net>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: 17771@debbugs.gnu.org
Subject: bug#17771: 24.3.91; SIGSEGV in cleanup_vector
Date: Mon, 16 Jun 2014 23:33:35 +0200	[thread overview]
Message-ID: <87mwdcilow.fsf@rosalinde.fritz.box> (raw)
In-Reply-To: <539F154A.5000307@yandex.ru> (Dmitry Antipov's message of "Mon, 16 Jun 2014 20:03:22 +0400")

[-- Attachment #1: Type: text/plain, Size: 1483 bytes --]

On Mon, 16 Jun 2014 20:03:22 +0400 Dmitry Antipov <dmantipov@yandex.ru> wrote:

> On 06/16/2014 07:49 PM, Stephen Berman wrote:
>
>> cpu MHz : 1000.000
>> and 4 GiB RAM
>
> This should be pretty enough.
>
>> Mostly ~97%
>
> Then you should profile with perf.

I've now done that.  Here are the top five entries; the whole gzipped
output is attached.

# Samples: 26K of event 'cycles'
# Event count (approx.): 47032351373
#
# Overhead  Command  Shared Object                  Symbol
# ........  .......  .............................  ..............................
#
    36.00%    emacs  libfontconfig.so.1.8.0         [.] 0x000000000001f643           
    31.34%    emacs  libc-2.18.so                   [.] __strchr_sse2                
     6.78%    emacs  [kernel.kallsyms]              [k] 0xffffffff8103aef6           
     4.12%    emacs  libz.so.1.2.8                  [.] 0x0000000000007cc6           
     1.15%    emacs  libfontconfig.so.1.8.0         [.] FcCharSetSubtractCount

I don't know if it's significant, but when I ran perf, it gave the
following warnings:

[kernel.kallsyms] with build id d1a714bf3876cc6850d48a51a4f68be7e418e864 not found, continuing without symbols
Warning:
Kernel address maps (/proc/{kallsyms,modules}) were restricted.

Check /proc/sys/kernel/kptr_restrict before running 'perf record'.

As no suitable kallsyms nor vmlinux was found, kernel samples
can't be resolved.

Samples in kernel modules can't be resolved as well.


Steve Berman


[-- Attachment #2: perf output --]
[-- Type: application/x-gzip, Size: 25243 bytes --]

  reply	other threads:[~2014-06-16 21:33 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-13  9:12 bug#17771: 24.3.91; SIGSEGV in cleanup_vector Stephen Berman
2014-06-13  9:41 ` Eli Zaretskii
2014-06-13  9:50   ` Stephen Berman
2014-06-13 12:19     ` Eli Zaretskii
2014-06-13 12:39       ` Stephen Berman
2014-06-13 13:28         ` Eli Zaretskii
2014-06-13 13:34           ` Stephen Berman
2014-06-13 13:44             ` Eli Zaretskii
2014-06-13 13:53               ` Stephen Berman
2014-06-13 13:58                 ` Eli Zaretskii
2014-06-13 14:13                   ` Stephen Berman
2014-06-13 14:52                     ` Eli Zaretskii
2014-06-16  8:02                       ` Dmitry Antipov
2014-06-16 10:16                         ` Stephen Berman
2014-06-16 12:37                           ` Dmitry Antipov
2014-06-16 13:07                             ` Stephen Berman
2014-06-16 13:19                               ` Dmitry Antipov
2014-06-16 13:32                                 ` Andreas Schwab
2014-06-16 15:49                                   ` Stephen Berman
2014-06-16 16:21                                     ` Dmitry Antipov
2014-06-16 21:34                                       ` Stephen Berman
2014-06-17  2:25                                         ` Dmitry Antipov
2014-06-17 13:40                                           ` Stephen Berman
2014-06-18 12:54                                   ` Wolfgang Jenkner
2014-06-18 13:50                                     ` Stephen Berman
2014-06-18 14:01                                       ` Dmitry Antipov
2014-06-18 16:00                                         ` Stephen Berman
2014-06-18 16:24                                           ` Dmitry Antipov
2014-06-18 17:00                                             ` Stephen Berman
2014-08-12  3:59                                               ` Glenn Morris
2014-06-16 15:49                                 ` Stephen Berman
2014-06-16 16:03                                   ` Dmitry Antipov
2014-06-16 21:33                                     ` Stephen Berman [this message]
2014-06-17  2:09                                       ` Dmitry Antipov
2014-06-17 13:41                                         ` Stephen Berman
2014-06-17 18:11                                           ` Dmitry Antipov
2014-06-18 13:50                                             ` Stephen Berman

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