Re: [PATCH RFC 1/2] sched: Minimize the idle cpu selection race window.

[Atish Patra]

On 11/01/2017 02:18 AM, Mike Galbraith wrote:
> On Wed, 2017-11-01 at 07:54 +0100, Mike Galbraith wrote:
> > On Wed, 2017-11-01 at 01:08 -0500, Atish Patra wrote:
> >
> > > Do you have the schbench configuration somewhere that I can test? I
> > > tried various configurations but did not
> > > see any improvement or regression.
> > No, as noted, I didn't save anything.  I watched and fiddled with
> > several configurations on various sized boxen, doing this/that on top
> > of the reservation thing to try to improve the "it's 100% about perfect
> > spread" schbench, but didn't like the pricetag, so tossed the lot over
> > my shoulder and walked away.
:)
> BTW, the biggest trouble with schbench at that time was not so much
> about wakeup time stacking (though it was visible), it was using load
> averages instead of instantaneous state, and sawtoothing therein.
Ahh I see. Any other benchmark suggestion that may benefit from this fix ?

Regards,
Atish
> 	-Mike