lkml.org 
[lkml]   [2010]   [Sep]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC patch 1/2] sched: dynamically adapt granularity with nr_running
From
Date
On Sun, 2010-09-12 at 11:06 +0200, Peter Zijlstra wrote:
> On Sat, 2010-09-11 at 13:48 -0700, Linus Torvalds wrote:

> > And I don't like how you dismissed the measured latency improvement.
> > And yes, I do think latency matters. A _lot_.
>
> OK, we'll make it better and sacrifice some throughput, can do, no
> problem.

I'm not seeing high wakeup latencies, even under hefty load. Mathieu's
testcase is bad, but apparently solely due to START_DEBIT placement.
That's kind of a sticky wicket. I've shot it in the heart before, but
regretted doing so when I looked at kbuild vs static load fairness.

-Mike



\
 
 \ /
  Last update: 2010-09-13 06:39    [W:0.142 / U:2.228 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site