lkml.org 
[lkml]   [2018]   [May]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] sched: remove select_idle_core() for scalability
On Wed, May 30, 2018 at 03:08:21PM -0700, Subhra Mazumdar wrote:
> I tested with FOLD+AGE+ONCE+PONIES+PONIES2 shift=0 vs baseline but see some
> regression for hackbench and uperf:

I'm not seeing a hackbench regression myself, but I let it run a whole
lot of stuff over-night and I do indeed see some pain points, including
sysbench-mysql and some schbench results.

> I have a patch which is much smaller but seems to work well so far for both
> x86 and SPARC across benchmarks I have run so far. It keeps the idle cpu
> search between 1 core and 2 core amount of cpus and also puts a new
> sched feature of doing idle core search or not. It can be on by default but
> for workloads (like Oracle DB on x86) we can turn it off. I plan to send
> that after some more testing.

Sure thing..

\
 
 \ /
  Last update: 2018-05-31 11:28    [W:0.058 / U:0.836 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site