lkml.org 
[lkml]   [2020]   [May]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] sched/fair: don't NUMA balance for kthreads
On Tue, May 26, 2020 at 05:40:06PM +0100, Valentin Schneider wrote:

> > Change the task_tick_numa() check to exclude kernel threads in general,
> > as it doesn't make sense to attempt ot balance for kthreads anyway.
> >
>
> Does it? (this isn't a rethorical question)
>
> Suppose a given kthread ends up doing more accesses to some pages
> (via use_mm()) than the other threads that access them, wouldn't it make
> sense to take that into account when it comes to NUMA balancing?

Well, task_tick_numa() tries and farm off a bunch of actual work to
task_work_add(), and there's so very little userspace for a kernel
thread to return to... :-)


\
 
 \ /
  Last update: 2020-05-26 22:03    [W:0.056 / U:5.608 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site