On Sat, 2006-02-04 at 15:24 -0500, Albert Cahalan wrote:
> There have been far too many other problems with i386 timekeeping as
> well. Really, it's crazy to not use the pmtmr if the pmtmr is
> available. The next best choice would be HPET. After that, pre-SMM
> systems should count clock ticks and post-SMM systems should read the
> RTC or PIT registers. Until we accept this, we'll always be suffering
> clock problems.
Well, I wouldn't say it's crazy - the TSC is several orders of magnitude
cheaper than the PM timer, and the only common hardware where it's
completely useless are Athlon X2 systems.
Fortunately there's a solution in the works - John Stultz's gettimeofday
rework. Try the -rt tree for a preview.
Lee
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