From: Pierre Bourdon <pbourdon-SxHCd5+OuqTrt3ojHgZu+w@public.gmane.org>
To: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org,
Dhaval Giani
<dhaval-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
Srivatsa Vaddagiri
<vatsa-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
bugme-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Subject: Re: [Bugme-new] [Bug 16417] New: Slow context switches with SMP and CONFIG_FAIR_GROUP_SCHED
Date: Mon, 02 Aug 2010 12:52:38 +0200 [thread overview]
Message-ID: <0801eaf1eefd2f499069888240a834ad@imap1> (raw)
In-Reply-To: <1280739521.1923.18.camel@laptop>
On Mon, 02 Aug 2010 10:58:41 +0200, Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
wrote:
> Does: echo NO_LB_SHARES_UPDATE > /debug/sched_features
> (or wherever you mounted debugfs) help things?
It does not, sorry. Latency with lat_ctx is still high, and CPU usage with
cat | pv is still high too.
Regards,
--
Pierre Bourdon
prev parent reply other threads:[~2010-08-02 10:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-16417-10286@https.bugzilla.kernel.org/>
[not found] ` <bug-16417-10286-3bo0kxnWaOQUvHkbgXJLS5sdmw4N0Rt+2LY78lusg7I@public.gmane.org/>
2010-07-22 22:52 ` [Bugme-new] [Bug 16417] New: Slow context switches with SMP and CONFIG_FAIR_GROUP_SCHED Andrew Morton
[not found] ` <20100722155222.f0fdc50a.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2010-08-02 8:58 ` Peter Zijlstra
2010-08-02 10:52 ` Pierre Bourdon [this message]
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