lkml.org 
[lkml]   [2013]   [Jun]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH] sched: smart wake-affine
From
Date
On Mon, 2013-06-03 at 10:28 +0800, Michael Wang wrote: 
> On 05/28/2013 01:05 PM, Michael Wang wrote:
> > wake-affine stuff is always trying to pull wakee close to waker, by theory,
> > this will bring benefit if waker's cpu cached hot data for wakee, or the
> > extreme ping-pong case.
> >
> > And testing show it could benefit hackbench 15% at most.
> >
> > However, the whole stuff is somewhat blindly and time-consuming, some
> > workload therefore suffer.
> >
> > And testing show it could damage pgbench 50% at most.
> >
> > Thus, wake-affine stuff should be smarter, and realise when to stop
> > it's thankless effort.
>
> Is there any comments?

(I haven't had time to test-drive yet, -rt munches time like popcorn)



\
 
 \ /
  Last update: 2013-06-03 06:01    [W:0.546 / U:0.208 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site