Date: Fri, 13 Jan 2006 14:23:49 -0800
From: thockin@hockin.org
To: David Lang <dlang@digitalinsight.com>
Cc: Lee Revell <rlrevell@joe-job.com>,
       Sven-Thorsten Dietrich <sven@mvista.com>,
       linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Dual core Athlons and unsynced TSCs
Message-ID: <20060113222349.GA32363@hockin.org>
References: <1137178855.15108.42.camel@mindpipe> <Pine.LNX.4.62.0601131315310.9821@qynat.qvtvafvgr.pbz> <20060113215609.GA30634@hockin.org> <Pine.LNX.4.62.0601131404311.9821@qynat.qvtvafvgr.pbz>
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On Fri, Jan 13, 2006 at 02:05:23PM -0800, David Lang wrote:
> On Fri, 13 Jan 2006 thockin@hockin.org wrote:
> 
> >On Fri, Jan 13, 2006 at 01:18:35PM -0800, David Lang wrote:
> >>Lee, the last time I saw this discussion I thought it was identified that
> >>the multiple cores (or IIRC the multiple chips in a SMP motherboard) would
> >>only get out of sync when power management calls were made (hlt or
> >>switching the c-state). IIRC the workaround that was posted then was to
> >>just disable these in the kernel build.
> >
> >not using 'hlt' when idling means that you spend 10s of Watts more power
> >on mostly idle systems.
> 
> true, but for people who need better time accruacy then the other 
> workaround this may be very acceptable.

sure, if power doesn't matter use idle=poll => problem solved.
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