Kernel PLL graphs
hmurray at megapathdsl.net
Wed Aug 3 21:24:01 UTC 2016
Matthew.Selsky at twosigma.com said:
> I'm using maxpoll of 1 on my stratum 1 servers. And I have !NO_HZ set. My
> offsets stay belong 1 microsecond as reported by ntpq. If we switched the
> units to nanoseconds, that might be interesting.
Time to make sure I've got the right number of negatives... "I have !NO_HZ
set" means you have unset NO_HZ which probably means you had to build your
Do you have flag3 turned on? If so, the kernel does all the work and maxpoll
is essentially ignored.
I though there was a min to maxpoll so I'm a bit surprised you could set it
> I don't have !NO_HZ set on my stratum 2 servers, but I'm looking at the
> ramifications of that.
At least for the effect I'm discussing, it only matters if you have a PPS.
> I'm curious what your results are.
These are my opinions. I hate spam.
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