lkml.org 
[lkml]   [2012]   [Mar]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: sched: Avoid SMT siblings in select_idle_sibling() if possible
* Ingo Molnar <mingo@elte.hu> [2012-03-06 10:14:11]:

> Does volanomark still do yield(),

I could count 3.5M yield() calls across 16 cpus over a period of 5.4sec,
so yes it does seem to make very good use of yeild()!

> thereby invoking a random
> shuffle of thread scheduling and pretty much voluntarily
> ejecting itself from most scheduler performance considerations?
>
> If it uses a real locking primitive such as futexes then its
> performance matters more.

Good point ..I will gather more data for additional benchmarks
(tbench, sysbench) and post shortly.

- vatsa



\
 
 \ /
  Last update: 2012-03-06 11:07    [W:0.051 / U:4.284 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site