linux-kernel - Re: High CPU usage of scheduler?

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Message-ID: <loom.20120802T221324-739@post.gmane.org>
Date:	Thu, 2 Aug 2012 21:45:12 +0000 (UTC)
From:	Aaron Scamehorn <ajscam@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: High CPU usage of scheduler?

Dave Johansen <davejohansen <at> gmail.com> writes:

> 
> Here's an updated version that measures the user and system time of
> each thread and also outputs those results. It also has a correction
> for how the mean and standard deviation are updated inside of the
> outer_iterations loop.
> 
> The updated results are available here:
> http://unix.stackexchange.com/questions/37391/high-cpu-usage-with-cfs
> and here:
> https://bugzilla.redhat.com/show_bug.cgi?id=812148
> 
> Any other tests I can run to help diagnose the problem?
> 
> Thanks,
> Dave
> 
> Attachment (test_sleep.c): text/x-csrc, 11 KiB


I tried to take a look at that bugzilla, but Redhat is saying that it is "an
internal bugzilla, and not visible to the public."

Have there been any updates on this?

Thanks,
Aaron

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