[ntp:questions] stupid, simple question about precision
Richard B. Gilbert
rgilbert88 at comcast.net
Mon Nov 20 22:11:37 UTC 2006
David J Taylor wrote:
> Simple Simon wrote:
>>My understanding is the best accuracy I might get, on a generic PC
>>clock, is about 0.050 ms--and that's with SSP and the kernel clock.
> My really old 133MHz Pentium PC with FreeBSD and a PPS source (with an
> incomplete view of the sky) does a little better than than. I'm sure more
> modern hardware and a better-positioned GPS antenna would do substantially
I haven't tried it with a PC but a ~10 year old Sun Ultra 10 with a 440
MHz processor and Solaris 8 keeps time within a couple of microseconds.
I do have a good view of the sky. Something blazingly fast with a
lower interrupt latency might do still better but my modest hardware
meets and exceeds my very modest needs.
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