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Date: Tue, 7 Aug 2012 22:29:32 +0530 From: Srikar Dronamraju <srikar@...ux.vnet.ibm.com> To: John Stultz <johnstul@...ibm.com> Cc: Peter Zijlstra <peterz@...radead.org>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: rcu stalls seen with numasched_v2 patches applied. * John Stultz <johnstul@...ibm.com> [2012-08-07 10:08:51]: > On 08/07/2012 05:33 AM, Srikar Dronamraju wrote: > >Hi, > > > >I saw this while I was running the 2nd August -tip kernel + Peter's > >numasched patches. > > > >Top showed load average to be 240, there was one cpu (cpu 7) which > >showed 100% while all other cpus were idle. The system showed some > >sluggishness. Before I saw this I ran Andrea's autonuma benchmark couple > >of times. > > > >I am not sure if this is an already reported issue/known issue. > So Ingo pushed a fix the other day that might address this: > http://git.linaro.org/gitweb?p=people/jstultz/linux.git;a=commitdiff_plain;h=1d17d17484d40f2d5b35c79518597a2b25296996 Okay, will update after applying the patch. > > But do let me know any reproduction details if you can trigger this > again. If you do trigger it again without that patch, watch to see > if the time value from date is running much faster then it should. > The time value from date is normal -- Thanks and Regards Srikar -- 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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