[time-nuts] NTP jitter with Linux
Mike S
mikes at flatsurface.com
Thu Apr 5 03:42:10 UTC 2012
On 4/4/2012 10:41 PM, Steve . wrote:
>breaking the 1pps down as far as 10micro seconds,The
> most obviously problem is that you are trying to use an inaccurate clock
> source(the pc)
Your reply ignores the simple fact that it _does_ track within a couple
of microseconds, as long as the processor is busy. The PC is _not_ the
clock source, a PPS signal derived from GPS is. A PC is perfectly
capable of 10 us accuracy. Even slower processors are capable of
significantly better accuracy - http://www.febo.com/pages/soekris/ .
> Trying to tweak a PC to get 10microseconds (nyquist, 5microseconds max)
???
Maybe your PC runs in MHz, but mine runs in GHz. Are you confusing us
with ns?
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