On Tue, 26 Jan 2016, Mike Galbraith wrote: > On Tue, 2016-01-26 at 10:26 -0600, Christoph Lameter wrote: > > On Tue, 26 Jan 2016, Mike Galbraith wrote: > > > > > > Why would the deferring cause this overhead? > > > > > > Because we schedule to idle cores aggressively, thus we may pop in and > > > out of idle at high frequency. > > > > Whats the point of going idle if you have things to do soon? > > When a task schedules off, how do you know it'll be back at all, much > less soon?
Ok so you are running an artificial benchmark that always gets the system running again when it decides to go idle?
