lkml.org 
[lkml]   [2012]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v5] sched: Avoid unnecessary work in reweight_entity
From
Date
On Sat, 2012-02-18 at 09:43 +0800, Michael Wang wrote:
> And as reight_entity is invoked very often, I think this patch can do some help to the
> performance, although there are no numbers, we can prove it logically :)

Well, you're probably right (although I think you completely ignored the
optimizing compiler), but still it would be good to get some numbers to
confirm reality :-)

Just pick your favourite cgroup workload/benchmark and run a pre/post
comparison, possible using perf record.

If all squares up you should see an improvement in your benchmark score
as well as see a reduction in time spend in the function you're
patching.


\
 
 \ /
  Last update: 2012-02-20 14:11    [from the cache]
©2003-2011 Jasper Spaans