[ntp:questions] NMEA ref.clock better than my ISP's timeserver?
David J Taylor
david-taylor at blueyonder.not-this-part.nor-this.co.uk.invalid
Sat Jun 13 17:31:04 UTC 2009
David Lord wrote:
> Neither, I'll be without gps for a while. Servers are right at
> back of house. There used to be a phone upstairs (1/4" jack) and
> if that line is still there I might be able to pull a cable
> through otherwise it's a messy job. I'll try gps from back, high
> up off a north facing wall, and might get away with that.
Ok, I misunderstood that you had the GPS downstairs as well.
>> Next step? Sync these PCs to your new stratum-1 clock as well as the
> Yes that's the plan.
> BTW and thanks, I used your mrtg page for setting up stats graphs.
> Pity mrtg doesn't allow -ve values.
Glad you found the MRTG stuff of use. You could probably use RRDtool to
better effect to handle the bipolar values. There was a suggestion to
plot the positive and negative values separately, which I think you have
used, but personally I don't like the results for normal viewing:
although they can be useful in that they auto-scale and allow you to see
transients which would otherwise be off the normal graphs:
Had some "interesting" rain and thunderstorms this afternoon, and rebooted
one PC, which is why there are some unusual transients showing.
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