linux-kernel - Re: TSC as clocksource

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Message-ID: <1294667092.11896.0.camel@laptop>
Date:	Mon, 10 Jan 2011 14:44:52 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Rob <roblinux@...il.com>
Cc:	linux-kernel@...r.kernel.org, "Brown, Len" <lenb@...nel.org>,
	tglx <tglx@...utronix.de>
Subject: Re: TSC as clocksource

On Mon, 2011-01-10 at 09:54 +1100, Rob wrote:
> Want to use TSC as clocksource
> have a Intel Core2 Duo with constant_tsc flag
> TSC should be stable at C1 + C2, it is debatable whether C3 is stable
> 
> Using processor.max_cstate=2 to use only C1 + C2 changes nothing, still get
> Monitor-Mwait will be used to enter C-3 state
> there should be checks before this is forced
> 
> Please CC answers, comments to my email.

Len, Thomas?
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