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From: Lukas Hejtmanek <xhejtman@ics.muni.cz>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>,
	mingo@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: 2.6.24-git4+ regression
Date: Mon, 4 Feb 2008 15:36:22 +0100	[thread overview]
Message-ID: <20080204143622.GC4329@ics.muni.cz> (raw)
In-Reply-To: <1202124997.32654.78.camel@lappy>

On Mon, Feb 04, 2008 at 12:36:36PM +0100, Peter Zijlstra wrote:
> I can't reproduce this with a pure cpu load. I started 10 
>   while :; do :; done &
> instances and aside from slowing down, nothing bad happened.

yes, while true; do true; does nothing wrong. But running make -j2 in kernel
sources or mesa sources is catastrophic.
 
> May I suggest you try latency top to see if there is something in your
> build scenario that generates horrible latencies (some IO path or
> whatnot).

see my previous mail to Ingo (you were Cc.), latency top says that Xorg and
gnome-terminal suffers 300+ms latency in scheduler: waiting for cpu.

-- 
Lukáš Hejtmánek

  reply	other threads:[~2008-02-04 14:37 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-30 13:56 Lukas Hejtmanek
2008-01-31 10:29 ` Ingo Molnar
2008-01-31 10:55   ` Lukas Hejtmanek
2008-02-04 11:17   ` Lukas Hejtmanek
2008-02-04 11:36     ` Peter Zijlstra
2008-02-04 14:36       ` Lukas Hejtmanek [this message]
2008-02-04 14:45         ` Peter Zijlstra
2008-02-04 17:00           ` Lukas Hejtmanek
2008-02-04 12:01     ` Ingo Molnar
2008-02-04 12:29       ` Lukas Hejtmanek
2008-02-04 13:04         ` Ingo Molnar
2008-02-04 13:49           ` Lukas Hejtmanek
2008-02-14 16:55 ` Srivatsa Vaddagiri
2008-02-17 20:26   ` Lukas Hejtmanek
2008-02-18  4:28     ` Ingo Molnar
2008-02-18  7:38       ` Mike Galbraith
2008-02-18  8:20         ` Srivatsa Vaddagiri
2008-02-18  8:36           ` Mike Galbraith
     [not found]             ` <1203325554.4889.2.camel@homer.simson.net>
     [not found]               ` <1203345102.5984.1.camel@homer.simson.net>
2008-02-19  8:15                 ` Mike Galbraith

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