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Re: cpu scaling questions
- From: Dave Jones <davej redhat com>
- To: "Thomas J. Baker" <tjb unh edu>
- Cc: Development discussions related to Fedora Core <fedora-devel-list redhat com>, fedora-test-list redhat com
- Subject: Re: cpu scaling questions
- Date: Mon, 2 Oct 2006 16:01:55 -0400
On Mon, Oct 02, 2006 at 03:44:02PM -0400, Thomas J. Baker wrote:
> Just curious - it must also a bug that under FC5, with two hyperthreaded
> Xeon CPUs, all four logical processors scale independently?
Yes. They should scale in pairs. That is, if you're using a real
scaling driver, and not p4-clockmod. With p4-clockmod each
core is independant, because it's not really scaling, it's inserting
waitstates in each clock tick per 'thread'.
Dave
--
http://www.codemonkey.org.uk
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