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Message-ID: <AANLkTini15poUNM54UrM5KmGAoyJOznReYAFCkoxKEyN@mail.gmail.com> Date: Fri, 21 Jan 2011 16:39:03 -0600 From: Michael Witten <mfwitten@...il.com> To: Mike Galbraith <efault@....de> Cc: linux-kernel@...r.kernel.org Subject: Re: 'autogroup' sched code KILLING responsiveness On Fri, Jan 21, 2011 at 16:27, Mike Galbraith <efault@....de> wrote: > On Fri, 2011-01-21 at 10:20 -0800, Michael Witten wrote: >> Bisecting shows that this commit: >> >> 5091faa449ee0b7d73bc296a93bca9540fc51d0a >> sched: Add 'autogroup' scheduling feature: automated per session task groups >> Date: Tue Nov 30 14:18:03 2010 +0100 >> >> is the reason that my computer has become unusable. >> >> With that code in place, a resource-intensive activity (such as >> compiling the Linux kernel) causes my computer to become >> unresponsive for many seconds at a time; the entire screen >> does not refresh, typed keys are dropped or are handled very >> late, etc (even in Linux's plain virtual consoles). > > That's not what I'm experiencing with a UP kernel... Before I try to gather any data, I'd like to point out that the problem disappears when I disable CONFIG_SCHED_AUTOGROUP (General setup -> Automatic process group scheduling). Do you have it disabled? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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