From: David Newall <davidn@davidnewall.com>
To: Olaf Kirch <okir@suse.de>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com,
Andreas Gruenbacher <agruen@suse.de>
Subject: Re: CFS Performance Issues
Date: Fri, 29 May 2009 04:13:07 +0930 [thread overview]
Message-ID: <4A1EDB3B.10402@davidnewall.com> (raw)
In-Reply-To: <200905282020.09667.okir@suse.de>
Olaf Kirch wrote:
>> About that: avg slice is in nsec, not msec (the old, off-by-one-million
>> bug), and utime, also an average, is in usec.
>>
> ...
> utime / ninvcsw / 1000
>
> which is a millisecond quantity.
>
Sorry. My confusion. (The old, divide-instead-of-multiply bug.)
next prev parent reply other threads:[~2009-05-28 18:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-28 13:02 CFS Performance Issues Olaf Kirch
2009-05-28 15:49 ` David Newall
2009-05-28 18:20 ` Olaf Kirch
2009-05-28 18:43 ` David Newall [this message]
2009-05-28 20:31 ` Peter Zijlstra
2009-05-30 11:18 ` Ingo Molnar
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