[ntp:questions] 4.2.4p8 -> 4.2.6p5 less frequent driftfile updates?

Jochen Bern Jochen.Bern at LINworks.de
Fri Dec 20 11:51:10 UTC 2013

On 19 Dec 2013 16:54 +0100, Terje Mathisen wrote:
> This is intentional, in order to lace less load on the hard drive/flash 
> drive of embedded/small servers. :-)

I see. I admit that our SAN admin *did* complain about high IOPS figures
lately ... ;-D

On 19 Dec 2013 22:47 +0000, Harlan Stenn wrote:
> Also see the "nonvolatile" directive in the ntp.conf file (described in
> the miscopt.html page).

And *that* explains why the age alerts didn't appear until the drift
estimates had settled again, half a day or so *after* the update.

The driftfile having a resolution of milliPPM suggests that with the
default value of "nonvolatile", an update should be written at least
every eight hours unless the difference happens to stay at *zero* within
that resolution. I'll see what limits of WARN=9h CRIT=24h will do,
thanks for the pointers.

								J. Bern
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