lkml.org 
[lkml]   [2003]   [May]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.4.20: Proccess stuck in __lock_page ...


On Tue, 27 May 2003, Andrea Arcangeli wrote:

> > It seems your "fix-pausing" patch is fixing a potential wakeup
> > miss, right? (I looked quickly throught it). Could you explain me the
>
> yes, not just one but multiple of them, all similar. lots of boxes were
> hanging in a weird manner until I found and fixed this glitch.
>
> > problem its trying to fix and how?
>
> I'm attaching the old email, it should have all the explanataions.
>
> but don't use that old patch (that was the first revision and it missed
> one last race in wait_for_request noticed by Chris or Andrew [or
> both?]), use this one instead (seems just the second revision, should be
> that one plus that last race fix):
>
> http://www.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.21rc2aa1/9980_fix-pausing-2

I wonder if the additional wakeups result in performance degradation (not
that it matters much in case there is no other way to fix the problem).

But anyway I would like to have some numbers with/without the patch.

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

\
 
 \ /
  Last update: 2005-03-22 13:35    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site