lkml.org 
[lkml]   [2013]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH] mm: percpu pages: up batch size to fix arithmetic?? errror
On Wed, 11 Sep 2013, Dave Hansen wrote:

> 3. We want ->high to approximate the size of the cache which is
> private to a given cpu. But, that's complicated by the L3 caches
> and hyperthreading today.

well lets keep it well below that. There are other caches (slab related
f.e.) that are also in constant use.

> I'll take one of my big systems and run it with some various ->high
> settings and see if it makes any difference.

Do you actually see contention issues on the locks? I think we have a
tendency to batch too much in too many caches.






\
 
 \ /
  Last update: 2013-09-12 16:41    [W:0.148 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site