linux-kernel - Re: a question about p4_clockmod module on Xeon quad core processors

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Message-ID: <4981A0AC.5030300@msgid.tls.msk.ru>
Date:	Thu, 29 Jan 2009 15:27:24 +0300
From:	Michael Tokarev <mjt@....msk.ru>
To:	Dave Jones <davej@...hat.com>, Xiaoning Ding <dingxn@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: a question about p4_clockmod module on Xeon quad core	processors

Dave Jones wrote:
[]
> p4-clockmod doesn't change the processor frequency.

Hmm..  But what it really does, then?
I used it one one machine which had a flaky CPU cooler,
to reduce power consumption during hot summer days.
It worked, and reportedly the frequency varied from
200MHz to the max of 2.4GHz (it's a P4 Xeon).  Now
I wonder why it helped to reduce the temperature and
why the system reported different frequencies...

Thanks!

> Because of common misconceptions like this, the user interface has been removed.

/mjt
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