GNU bug report logs - #7489
[coreutils] over aggressive threads in sort

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Chen Guo <chen.guo.0625 <at> gmail.com>
Cc: coreutils <at> gnu.org, Jim Meyering <jim <at> meyering.net>, 7489 <at> debbugs.gnu.org, DJ Lucas <dj <at> linuxfromscratch.org>
Subject: bug#7489: [coreutils] over aggressive threads in sort
Date: Sun, 05 Dec 2010 23:01:27 -0800

On 12/05/2010 09:16 PM, Chen Guo wrote:
> Before saying anything else, I should note that for mutexes, on 4
> threads 20% of the time there's a segfault on a seemingly innocuous
> line in queue_insert ():
>   node->queued = true

It does sound like mutexes are the way to go, and that this bug
needs to be fixed.  I assume that this is the call to queue_insert
from queue_check_insert_parent?  What's the backtrace?  (And
what patch are you using, to get mutexes?)

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