Re: Dual core Athlons and unsynced TSCs

[Lee Revell]

On Sun, 2006-01-15 at 08:25 -0800, thockin@xxxxxxxxxx wrote:
> On Sun, Jan 15, 2006 at 01:52:44AM -0700, Zan Lynx wrote:
> > A laptop user could also bind a process to a single CPU, and use the
> > scaling min/max values to lock CPU speed to a single value.  The TSC may
> > still stop during HLT, but software must be handling that already.
> > 
> > Wouldn't that provide an accurate TSC?
> 
> monotonic but not linear.  Also remember that the OS will use rdtsc here
> and there, and you can't affine the OS :)
> 

So the options are either to fix the TSC handling on these systems (by
resyncing the TSCs when exiting from HLT), or eliminate the use of rdtsc
by the OS?

Lee

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