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
next prev parent 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 2.6.24-git4+ regression 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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