[ntp:questions] Multiple ntp processes?
Scot P. Floess
floess at mindspring.com
Mon Oct 16 12:13:59 UTC 2006
Danny:
Thank you for the prompt reply. I just compiled the latest version of
NTP and am not seeing double processes...but it could be I time it to
when a second process isn't running.
Regardless, thank you again as this is very useful information :)
Scot
Danny Mayer wrote:
> Scot P. Floess wrote:
>
>> I didn't readily find an answer to this problem...
>>
>> I note when I start ntp as an init script running Fedora Core 5 on a
>> dual PIII 450 Mhz box, I see two ntpd processes running. By looking at
>> the PID and PPID it appears one ntpd is starting the other. I note in
>> /var/log/messages I will see logs with intermixed times. For instance,
>> a log with time X followed by logs with X - some prior time...it's very
>> odd...
>>
>
> Yes, the second process is created by a fork of the first one. The
> second one is doing DNS lookups that it sends back to the first once it
> has a definitive answer. The second process will exit when there is no
> longer anything for it to do. This is quite normal.
>
>
>> If, on the command line, I stop ntpd both processes stop fine. By
>> starting ntpd again...I note only one ntpd process running.
>>
>>
>
> You should see both but it's possible that you waited too long and the
> second has already returned all of it's answers.
>
>
>> My question is: is this behavior normal on a dual processor box? Based
>> on the odd timestamps in /var/log/messages - I would have to say only
>> one ntpd should be running...it almost "feels" like the two ntpd's are
>> fighting to set the system clock.
>>
>>
>
> No, this is all normal. Only one of them is setting the clock.
>
> Danny
>
>
>> Thanks in advance!
>>
>> Scot
>>
>
>
>
--
Scot P. Floess
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