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Date: Wed, 4 May 2016 17:45:10 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Chris Mason <clm@...com>, Mike Galbraith <mgalbraith@...e.de>, Ingo Molnar <mingo@...nel.org>, Matt Fleming <matt@...eblueprint.co.uk>, linux-kernel@...r.kernel.org Subject: Re: sched: tweak select_idle_sibling to look for idle threads On Tue, May 03, 2016 at 11:11:53AM -0400, Chris Mason wrote: > # pick a single core, in my case cpus 0,20 are the same core > # cpu_hog is any program that spins > # > taskset -c 20 cpu_hog & > > # schbench -p 4 means message passing mode with 4 byte messages (like > # pipe test), no sleeps, just bouncing as fast as it can. > # > # make the scheduler choose between the sibling of the hog and cpu 1 > # > taskset -c 0,1 schbench -p 4 -m 1 -t 1 Will that schbench thingy print something? Mine doesn't seem to output anything, not actually exit, although it stops consuming CPU cycles at some point.
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