From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"Alex Nixon (Intern)" <Alex.Nixon@eu.citrix.com>,
Ian Campbell <Ian.Campbell@eu.citrix.com>
Subject: Re: Large increase in context switch rate
Date: Thu, 17 Jul 2008 08:02:45 -0700 [thread overview]
Message-ID: <487F5F15.4050208@goop.org> (raw)
In-Reply-To: <1216286250.5232.67.camel@twins>
Peter Zijlstra wrote:
> Is this specific to Xen?, as a native kernel doesn't do more than ~3k
> cs/s with make -j3 on my dual core.
>
No, it doesn't seem to be. A CONFIG_PARAVIRT kernel running on bare
hardware shows the same context switch rate. Merely turning
CONFIG_PARAVIRT on should have no effect on context switch rate (though,
Alex, it would be worth double-checking, just to be sure).
J
next prev parent reply other threads:[~2008-07-17 15:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-16 18:54 Large increase in context switch rate Jeremy Fitzhardinge
2008-07-17 9:17 ` Peter Zijlstra
2008-07-17 15:02 ` Jeremy Fitzhardinge [this message]
2008-07-17 15:14 ` Alex Nixon (Intern)
2008-07-17 15:21 ` Peter Zijlstra
2008-07-17 15:45 ` Jeremy Fitzhardinge
2008-07-17 16:04 ` Alex Nixon (Intern)
2008-07-17 16:11 ` Jeremy Fitzhardinge
2008-07-17 21:43 ` Andi Kleen
2008-07-18 17:00 ` Alex Nixon (Intern)
2008-07-23 9:34 ` Alex Nixon (Intern)
2008-07-23 13:54 ` Andi Kleen
2008-07-24 1:26 ` Nick Piggin
2008-07-25 11:31 ` Alex Nixon
2008-07-25 11:39 ` Peter Zijlstra
2008-07-25 14:54 ` Jeremy Fitzhardinge
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