lkml.org 
[lkml]   [2014]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH RFC/TEST] sched: make sync affine wakeups work
On 05/02/2014 02:13 AM, Mike Galbraith wrote:
> On Fri, 2014-05-02 at 00:42 -0400, Rik van Riel wrote:
>
>> Whether or not this is the right thing to do remains to be seen,
>> but it does allow us to verify whether or not the wake_affine
>> strategy of always doing affine wakeups and only disabling them
>> in a specific circumstance is sound, or needs rethinking...
>
> Yes, it needs rethinking.
>
> I know why you want to try this, yes, select_idle_sibling() is very much
> a two faced little bitch.

My biggest problem with select_idle_sibling and wake_affine in
general is that it will override NUMA placement, even when
processes only wake each other up infrequently...

--
All rights reversed


\
 
 \ /
  Last update: 2014-05-02 09:21    [W:0.268 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site