Am Dienstag, 5. April 2005 01:09 schrieb John Pettitt: > [EMAIL PROTECTED] wrote: > >Interestingly, HZ=100 has remained constant for decades (!), despite > >CPUs getting faster all the time. This is an excellent value for most > >typical usage patterns. Cranking it up should only be required for > >special cases. Anyway, the HZ knob is there. Experiment with it until > >you get optimal performance. > > In the dim and distant past (like 1983) some systems used HZ=50 or HZ=60 > depending on where in the world they were. I used an MP/M based box > that took it's clock tick from the power line (no good RTC hardware
Hmm, I've seen onboard RTCs which surely were less acurate than a power-line-driven oscillator was ;) Some RTCs are really bad. But at least here in germany power line frequency is astonishing acurate. We also have a broadcast station which generates it's 50Hz vertical refresh rate from a dedicated caesium clock. Of course this tv station is paid by the peoples.... Sorry, a bit OT, but I'm really impressed how constant power line frequency is. -Harry > available but the power company keeps pretty good time). > > John > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "[EMAIL PROTECTED]"
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