lkml.org 
[lkml]   [2008]   [Nov]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: regression introduced by - timers: fix itimer/many thread hang
From
Date
On Fri, 2008-11-21 at 19:42 +0100, Petr Tesarik wrote:
> This is just not true. I've seen a very real example of a lockup with a very
> sane number of threads (one per CPU), but on a very large machine (1024 CPUs
> IIRC). The application set per-process CPU profiling with an interval of 1
> tick, which translates to 1024 timers firing off with each tick...
>
> Well, yes, that was broken, too, but that's the way one quite popular FORTRAN
> compiler works...

Petr, have you tried the fix in the latest kernel? Does it help? I'm
intensely curious to know how it affected your runs.
--
Frank Mayhar <fmayhar@google.com>
Google, Inc.



\
 
 \ /
  Last update: 2008-11-21 20:31    [W:0.141 / U:0.664 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site