Messages in this thread | | | Date | Wed, 6 Sep 2017 18:14:22 +0200 | From | Peter Zijlstra <> | Subject | Re: Abysmal scheduler performance in Linus' tree? |
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On Wed, Sep 06, 2017 at 11:03:33AM +0200, Peter Zijlstra wrote: > On Wed, Sep 06, 2017 at 01:59:14AM -0700, Andy Lutomirski wrote: > > > Any specifics on your setup? > > > > On further fiddling, I only see this after a suspend and resume cycle. > > Ah, ok. That's not something I otherwise test. Lets see if I can force > this brick of mine through a suspend-resume cycle :-)
I'd be suspicious of these here commits:
77d1dfda0e79 ("sched/topology, cpuset: Avoid spurious/wrong domain rebuilds") 09e0dd8e0f2e ("sched/topology: Avoid pointless rebuild") bbdacdfed2f5 ("sched/debug: Optimize sched_domain sysctl generation")
I tested them with regular hotplug, but suspend resume always is a tad funny.
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