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Subject: Re: System time warping around real time problem - please help
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Fionn Behrens <fionn@unix-ag.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       george anzinger <george@mvista.com>
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On Tue, 2003-03-25 at 22:55, Fionn Behrens wrote:
> > This all sounds very much like the TSCs are drifting WRT each other. 
> > Is it possible that you have some power management code (or hardware) 
> > that is slowing one cpu and not the other?
> 
> Well, I still don't really know what TSCs actually are (or what TSC
> stands for).
> 
> The only suspect in that case would be the amd76x_pm.o kernel module
> which I am admittedly using. It saves about 90Watts of power when the
> machine is idle...

If you are using amd76x_pm boot with "notsc", ditto for that matter
on dual athlons with APM or ACPI in some cases. In fact I wish people
would stop using the tsc for clock timing altogether. It simply doesn't
work on a lot of modern systems


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