From: Prarit Bhargava <prarit@redhat.com>
To: Kyle McMartin <kyle@mcmartin.ca>,
Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Rik van Riel <riel@redhat.com>
Subject: Re: 3.0.0-rc6 ~9X system time degradation on kernbench
Date: Thu, 14 Jul 2011 18:14:41 -0400 [thread overview]
Message-ID: <4E1F6A51.3020807@redhat.com> (raw)
In-Reply-To: <20110709224803.GC9545@bombadil.infradead.org>
On 07/09/2011 06:48 PM, Kyle McMartin wrote:
> On Fri, Jul 08, 2011 at 08:45:51PM -0400, Rik van Riel wrote:
>
>> On 07/08/2011 03:36 PM, Prarit Bhargava wrote:
>>
>>> Just some numbers out of kernbench. System Time& Context Switches
>>> climb dramatically between 2.6.38 and 3.0.0-rc6. Currently bisecting to
>>> find out why. .config is based on Fedora's x86_64 .config.
>>>
>>
> Er, if you're using Fedora's config, did you 'make release' first?
> grep DEBUG in the config and see why... ;-)
>
That did it :)
Thu Jul 14 15:33:27 EDT 2011
3.0.0-rc7+
Average Optimal load -j 48 Run (std deviation):
Elapsed Time 178.384 (0.618692)
User Time 3970.09 (1.93208)
System Time 587.498 (0.511488)
Percent CPU 2554.2 (8.58487)
Context Switches 1.08771e+06 (9697.64)
Sleeps 871265 (13137.6)
Thu Jul 14 16:06:39 EDT 2011
2.6.38.8-35.fc15.x86_64
Average Optimal load -j 48 Run (std deviation):
Elapsed Time 184.6 (8.64522)
User Time 3961.07 (5.05)
System Time 637.382 (11.7187)
Percent CPU 2494.4 (102.827)
Context Switches 1.09046e+06 (3986.03)
Sleeps 873607 (4756.41)
Still a bit higher ... but not 9x ... thanks Kyle.
P.
prev parent reply other threads:[~2011-07-14 22:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-08 19:36 3.0.0-rc6 ~9X system time degradation on kernbench Prarit Bhargava
2011-07-09 0:45 ` Rik van Riel
2011-07-09 22:48 ` Kyle McMartin
2011-07-14 22:14 ` Prarit Bhargava [this message]
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