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From: tmhikaru@gmail.com
To: Peter Zijlstra <peterz@infradead.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>,
	Venkatesh Pallipadi <venki@google.com>,
	Damien Wyart <damien.wyart@free.fr>,
	Chase Douglas <chase.douglas@canonical.com>,
	Ingo Molnar <mingo@elte.hu>,
	tmhikaru@gmail.com, Thomas Gleixner <tglx@linutronix.de>,
	linux-kernel@vger.kernel.org
Subject: Re: High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later)
Date: Tue, 9 Nov 2010 21:37:56 -0500	[thread overview]
Message-ID: <20101110023755.GB27340@roll> (raw)
In-Reply-To: <1289329348.2191.69.camel@laptop>

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On Tue, Nov 09, 2010 at 08:02:28PM +0100, Peter Zijlstra wrote:
> On Tue, 2010-11-09 at 13:55 -0500, Kyle McMartin wrote:
> > On Fri, Oct 29, 2010 at 09:42:23PM +0200, Peter Zijlstra wrote:
> > > 
> > > not tested other than compile, but how does that look...?
> > > 
> > 
> > Hi Peter,
> > 
> > I finally got around to building a test kernel for a user who had been
> > reporting this against F-14 (2.6.35) but they report there's not much
> > improvement.
> > 
> > Sorry. :/
> 
> Right, I tested it myself yesterday and got similar results. Does the
> 'simple' patch from a few posts back work for people?
> 
>  http://lkml.org/lkml/2010/10/26/150
> 
> If that does work I fudged the fancy math, if that doesn't work either
> we're back to square zero.

I seem to remember someone saying this would only work on x86-64; if this is
meant to work with a 32bit intel single core processor, please let me know -
I'd like to try it. It would also help if I knew which kernel version this
simpler patch is meant to apply to.

Thank you,
Tim McGrath

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  reply	other threads:[~2010-11-10  2:38 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-29  7:01 High CPU load when machine is idle Damien Wyart
2010-10-14 14:58 ` High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later) Damien Wyart
2010-10-14 15:29   ` Chase Douglas
2010-10-14 15:56     ` Damien Wyart
2010-10-15 11:08   ` Peter Zijlstra
2010-10-18 12:32     ` Peter Zijlstra
2010-10-20 13:27   ` Damien Wyart
2010-10-20 13:30     ` Peter Zijlstra
2010-10-20 13:43       ` Peter Zijlstra
2010-10-20 14:14         ` Peter Zijlstra
2010-10-20 14:25           ` Peter Zijlstra
2010-10-20 17:26           ` Peter Zijlstra
2010-10-20 20:24             ` Damien Wyart
2010-10-21  1:48             ` tmhikaru
2010-10-21  1:53               ` tmhikaru
2010-10-21  8:22                 ` Ingo Molnar
2010-10-21  8:57                   ` tmhikaru
2010-10-21 18:36               ` tmhikaru
2010-10-22  1:37                 ` tmhikaru
2010-10-21 12:09             ` Peter Zijlstra
2010-10-21 17:18               ` Venkatesh Pallipadi
2010-10-22 21:03                 ` Venkatesh Pallipadi
2010-10-22 23:03                 ` High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later) Venkatesh Pallipadi
2010-10-23  2:13                   ` tmhikaru
2010-10-25 10:12                   ` Peter Zijlstra
2010-10-25 16:29                     ` Venkatesh Pallipadi
2010-10-26 12:44                     ` Peter Zijlstra
2010-10-26 14:05                       ` Peter Zijlstra
2010-10-29 19:42                         ` Peter Zijlstra
2010-11-09 18:55                           ` Kyle McMartin
2010-11-09 19:02                             ` Peter Zijlstra
2010-11-10  2:37                               ` tmhikaru [this message]
2010-11-10 12:01                                 ` Peter Zijlstra
2010-11-10  3:45                               ` Kyle McMartin
2010-11-10 12:00                                 ` Peter Zijlstra
2010-11-14  5:14                                   ` tmhikaru
2010-11-25 13:31                                     ` Damien Wyart
2010-11-25 14:03                                       ` Peter Zijlstra
2010-11-27 20:15                                         ` Peter Zijlstra
2010-11-28  4:26                                           ` Kyle McMartin
2010-11-28 11:40                                           ` Damien Wyart
2010-11-28 18:07                                             ` Valdis.Kletnieks
2010-11-29 11:38                                             ` Peter Zijlstra
2010-11-29 19:40                                               ` tmhikaru
2010-11-29 23:01                                                 ` Peter Zijlstra
2010-11-30 14:59                                                   ` Peter Zijlstra
2010-11-30 15:39                                                     ` Kyle McMartin
2010-11-30 20:04                                                       ` Kyle McMartin
2010-11-30 16:53                                                     ` Damien Wyart
2010-11-30 17:29                                                       ` Peter Zijlstra
2010-12-01 21:27                                                     ` tmhikaru
2010-12-02 10:16                                                       ` tmhikaru
2010-12-08 20:40                                                     ` [tip:sched/urgent] sched: Cure more NO_HZ load average woes tip-bot for Peter Zijlstra
2010-11-30 20:01                                                   ` High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later) tmhikaru
2010-11-30 16:49                                               ` Damien Wyart

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