Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 7 Oct 2016 12:57:47 -0700 | Subject | Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes |
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On Fri, Oct 7, 2016 at 12:38 PM, Joseph Salisbury <joseph.salisbury@canonical.com> wrote: > > A kernel bug report was opened against Ubuntu [0]. After a kernel > bisect, it was found that reverting the following commit resolved this bug:
Hmm. Interesting, and it sounds like we should revert that unless somebody figures out *why* following the rules wrt cfq updates causes problems. But I also wonder what the Ubuntu kernel config is. Does Ubuntu enable CONFIG_SCHED_AUTOGROUP=y, for example? Because regardless of any other scheduler issues, autogrouping *should* mean that when you run some CPU hogger in one session, that should still balance all CPU time with other sessions..
I'm not seeing anything odd on my xps13, which should have a similar CPU to the X1 Carbon.
Linus
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