Messages in this thread | | | Date | Thu, 13 May 1999 15:23:28 -0700 | From | Richard Henderson <> | Subject | Re: Alpha Timekeeping - Hardware Questions |
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On Thu, May 13, 1999 at 03:07:16AM -0700, Bruce Elliott wrote: > } Subject: 2.2.8 gettimeofday() still doesn't work on Alpha > } Just booted 2.2.8 on my PC164 and the timetest program (included below) > } produces negative deltas with high frequency. > > [ ... ] > > I believe that I have read that (some) SMP Alphas have independent CPU > clocks (i.e. the oscillators that drive the "cycle counters"). Is this > true? If so, any cycle-counter-based timekeeping will be difficult, as > it requires drift-correction (something like ntp) at timer interrupt > level.
Thats rather irrelevant to a UP PC164.
r~
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