Re: [wake_afine fixes/improvements 0/3] Introduction

[Nick Piggin]

On Sat, Jan 15, 2011 at 12:57 PM, Paul Turner <pjt@xxxxxxxxxx> wrote:
>
> I've been looking at the wake_affine path to improve the group scheduling case
> (wake affine performance for fair group sched has historically lagged) as well
> as tweaking performance in general.
>
> The current series of patches is attached, the first of which should probably be
> considered for 2.6.38 since it fixes a bug/regression in the case of waking up
> onto a previously (group) empty cpu.  While the others can be considered more
> forwards looking.
>
> I've been using an rpc ping-pong workload which is known be sensitive to poor affine
> decisions to benchmark these changes,

Not _necessarily_ the best thing to use :) As a sanity check maybe, but it would
be nice to have at least an improvement on one workload that somebody
actually uses (and then it's a matter of getting a lot more testing to
see it does
not cause regressions on others that people use).
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