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From: Lukas Hejtmanek <xhejtman@ics.muni.cz>
To: Ingo Molnar <mingo@elte.hu>
Cc: mingo@redhat.com, linux-kernel@vger.kernel.org,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: 2.6.24-git4+ regression
Date: Thu, 31 Jan 2008 11:55:05 +0100	[thread overview]
Message-ID: <20080131105504.GA4332@ics.muni.cz> (raw)
In-Reply-To: <20080131102919.GC27157@elte.hu>

On Thu, Jan 31, 2008 at 11:29:19AM +0100, Ingo Molnar wrote:
> if you apply the current sched-fixes (rollup patch below), does it get 
> any better?

No. 

Another observation, running two instances of while true; do true; done (on
1 dual core cpu) does not break interactivity.

running make clean; make -j2 in kernel tree breaks interactivity terribly.
Looks like disk I/O activity is needed to break interactivity. 

While compiling, I have more than 1GB of RAM free. One friend of mine suggests
that kernel is swapping out binaries which causes non-interactivity. The
swaparea is clean, though. He also reports that the behavior can be seen even
in 2.6.24-rc8. 

-- 
Lukáš Hejtmánek

  reply	other threads:[~2008-01-31 10:56 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 [this message]
2008-02-04 11:17   ` Lukas Hejtmanek
2008-02-04 11:36     ` Peter Zijlstra
2008-02-04 14:36       ` Lukas Hejtmanek
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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