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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Jan Beulich <jbeulich@novell.com>
Cc: xen-devel@lists.xensource.com, Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Re: Xen spinlock questions
Date: Wed, 06 Aug 2008 13:21:53 -0700	[thread overview]
Message-ID: <489A07E1.6070808@goop.org> (raw)
In-Reply-To: <48998C7E.76E4.0078.0@novell.com>

Jan Beulich wrote:
>> In my tests, I only see it fall into the slow path a couple of thousand 
>> times per cpu for a kernbench run.
>>     
>
> Hmm, that's different then for me. Actually, I see a significant spike at
> modpost stage 2, when all the .ko-s get linked. The (spinlock) interrupt
> rate gets up to between 1,000 and 2,000 per CPU and second.
>   

BTW, how much contention for CPUs was there?

    J

  parent reply	other threads:[~2008-08-06 20:21 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-04 10:18 Xen spinlock questions Jan Beulich
2008-08-04 10:24 ` Keir Fraser
2008-08-11 12:22   ` Jan Beulich
2008-08-11 12:25     ` Keir Fraser
2008-08-11 14:41     ` Keir Fraser
2008-08-11 18:11       ` Jeremy Fitzhardinge
2008-08-11 18:31         ` Keir Fraser
2008-08-11 18:49           ` Jeremy Fitzhardinge
2008-08-12  9:00             ` Keir Fraser
2008-08-12 16:33               ` Jeremy Fitzhardinge
2008-08-12 17:00                 ` Keir Fraser
2008-08-15 12:15                   ` Jan Beulich
2008-08-15 13:01                     ` Keir Fraser
2008-08-15 14:06                       ` Jan Beulich
2008-08-18 10:01                         ` Keir Fraser
2008-08-15 17:12                       ` Jeremy Fitzhardinge
2008-08-11 18:10     ` Jeremy Fitzhardinge
2008-08-13  7:17       ` Jan Beulich
2008-08-04 19:36 ` Jeremy Fitzhardinge
2008-08-05  6:32   ` Jan Beulich
2008-08-05  7:33     ` Keir Fraser
2008-08-05 18:09     ` Jeremy Fitzhardinge
2008-08-06  7:15       ` Jan Beulich
2008-08-06  8:47         ` Jeremy Fitzhardinge
2008-08-06  9:35           ` Jan Beulich
2008-08-06 17:53             ` Jeremy Fitzhardinge
2008-08-06 20:21             ` Jeremy Fitzhardinge [this message]
2008-08-07  7:21               ` Jan Beulich
2008-08-07 15:47                 ` Jeremy Fitzhardinge

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