Re: regression introduced by - timers: fix itimer/many thread hang

[Frank Mayhar]

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@xxxxxxxxxx>
Google, Inc.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/