unruh wrote:
On 2013-12-02, David Lord <[email protected]> wrote:
Martin Burnicki wrote:
My server with Sure gps/pps has offset below 3 us other than when
nightly cron jobs give a couple of 35 us spikes. From loop_summary
over 7 days, typical range for rms offset is 3.9-6.1.
Over 7 days my four pool servers have following rms offset ranges
ntp0=784-1646, ntp1=405-837, ntp2=310-434, ntp3=586-1270 but there
were numerous reboots and ntpd restarts over that period.
I want to try using a stable external system clock source, TCXO,
OCXO or rubidium laser.
A sure gps IS a stable external system clock source. What more do you
want?
? it is a PPS source not a system clock source.
I'd prefer the 35 us blips to go away which would require the PC
to be idle 24/7 or a use of a stable external system clock.
And those offsets for your pool servers really seem very high.
did you miss that:
>> were numerous reboots and ntpd restarts over that period.
but peak offsets are still 300-500 us and I'd prefer if they
were even lower, again requiring a more stable system clock.
What do you think the local offsets should be for a pool server?
David
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