[ntp:questions] Re: logs or stats showing when NTP made changes to the local clock
jharvell at dogpad.net
Tue Sep 19 22:53:50 UTC 2006
Thanks for clarifying this. I guess I should say I am *only* interested
in step corrections, not the ongoing slew corrections you are describing.
David Woolley wrote:
> In article <t_WPg.3489$6S3.2474 at newssvr25.news.prodigy.net>,
> Joseph Harvell <jharvell at dogpad.net> wrote:
>> Subject: logs or stats showing when NTP made changes to the local clock
> I suspect a common misunderstanding here. On a better platform, the
> combination of ntpd and the kernel update the clock frequency on every
> timer tick. Even with ntpd version 3, running without kernel support,
> the tweaking was done every four seconds.
> If things are running smoothly, the parameters that control this are
> updated every time a packet is returned from an eligible server.
>> Can ntpd be made to log this? Can I infer it from the stats? I am
>> particularly interested in step corrections.
> Whilst the error recovery steps get included in the system log, recording
> the fine tuning would put an excessive load on the system.
> (The common misunderstanding is that ntpd periodically corrects the time,
> when it actually continuously corrects the frequency.)
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