> Actually it won't correct for current laptop CPUs that vary the clock
> speed -- the tsc speed also varies.
Oh ? To the best of my knowledge, current laptop CPUs don't vary the
clock speed, but the duty cycle of the CPU.
> It will probably correct for future laptop CPUs though, such as (no
> surprise) the Transmeta one.
I think no CPUs' TSC rate actually changes, so using rdtsc if we have
a working TSC should be fine.
Philipp Rumpf
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