lkml.org 
[lkml]   [2007]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 1/4] x86: FIFO ticket spinlocks


On Thu, 1 Nov 2007, Rik van Riel wrote:
>
> Larry Woodman managed to wedge the VM into a state where, on his
> 4x dual core system, only 2 cores (on the same CPU) could get the
> zone->lru_lock overnight. The other 6 cores on the system were
> just spinning, without being able to get the lock.

.. and this is almost always the result of a locking *bug*, not unfairness
per se. IOW, unfairness just ends up showing the bug in the first place.

Linus
-
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: 2007-11-02 02:23    [W:0.132 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site