lkml.org 
[lkml]   [2007]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] scheduler: improve SMP fairness in CFS
On Mon, Jul 23, 2007 at 03:25:12PM -0600, Chris Friesen wrote:
> Li, Tong N wrote:
> >On the other hand, if locking does
> >become a problem for certain systems/workloads, increasing
> >sysctl_base_round_slice can reduce the locking frequency and alleviate
> >the problem, at the cost of being relatively less fair across the CPUs.
>
> If locking does become a problem, it may make sense to switch instead to
> a lockless algorithm of some sort...

That usually has the same issue with cache lines. It would be better
to analyze first if such global synchronization is really needed.
I hope not.

-Andi
-
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: 2007-07-24 11:45    [W:0.057 / U:5.208 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site