Messages in this thread | | | Date | Mon, 8 Jan 2007 00:02:26 -0800 (PST) | From | dean gaudet <> | Subject | Re: [PATCH] All Transmeta CPUs have constant TSCs |
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On Fri, 5 Jan 2007, Jan Engelhardt wrote:
> > On Jan 4 2007 17:48, H. Peter Anvin wrote: > > > >[i386] All Transmeta CPUs have constant TSCs > >All Transmeta CPUs ever produced have constant-rate TSCs. > > A TSC is ticking according to the CPU frequency, is not it?
transmeta decided years before intel and amd that a constant rate tsc (unaffected by P-state) was the only sane choice. on transmeta cpus the tsc increments at the maximum cpu frequency no matter what the P-state (and no matter what longrun is doing behind the kernel's back).
mind you, many people thought this was a crazy choice at the time...
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