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From: William Lee Irwin III <wli@holomorphy.com>
To: Michael Hohnbaum <hohnbaum@us.ibm.com>
Cc: Erich Focht <efocht@ess.nec.de>, Andrew Morton <akpm@zip.com.au>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	LSE <lse-tech@lists.sourceforge.net>
Subject: Re: [Lse-tech] Re: per cpu time statistics
Date: Fri, 6 Dec 2002 09:55:57 -0800	[thread overview]
Message-ID: <20021206175557.GF11023@holomorphy.com> (raw)
In-Reply-To: <1039195903.16948.85.camel@dyn9-47-17-164.beaverton.ibm.com>

On Wed, 2002-12-04 at 04:43, Erich Focht wrote:
>> I had to learn from Michael Hohnbaum that you've eliminated the per
>> CPU time statistics in 2.5.50 (akpm changeset from Nov. 26).
> ...
>> For those who miss this feature I'm attaching a patch doing what wli
>> suggested. The config option is CONFIG_CPUS_STAT and can be found in
>> the "Kernel Hacking" menu, as wli suggested. Just didn't like
>> DEBUG_SCHED, we want to monitor the statistics and this is not
>> necessarily related to bugs in the scheduler. Also added as last line
>> in /proc/pid/cpu the current CPU of the task. It's often needed and
>> /proc/pid/stat is much too cryptic.

On Fri, Dec 06, 2002 at 09:31:43AM -0800, Michael Hohnbaum wrote:
> I use a set of tests provided by Erich that use the cpu information from
> the task.  This information is crucial for understanding how processes
> are dispatched across CPUs (and nodes on NUMA boxes).  I've applied
> Erich's patch and it restores this data, making his tests useful.  Could
> this patch be considered for inclusion?  Please.

We've already come to a resolution on this one (going with Erich's patch),
or at least I got that impression.

Bill

      reply	other threads:[~2002-12-06 17:49 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-04 12:43 per cpu time statistics Erich Focht
2002-12-04 17:47 ` Andrew Morton
2002-12-04 18:30   ` William Lee Irwin III
2002-12-05 10:57   ` Erich Focht
2002-12-05 11:14     ` William Lee Irwin III
2002-12-05 17:01       ` Bill Davidsen
2002-12-06 17:31 ` Michael Hohnbaum
2002-12-06 17:55   ` William Lee Irwin III [this message]

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