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#1 2008-11-14 05:53:00

bkim
Member
Registered: 2008-08-20
Posts: 20

ntpd frequency error & update interval

Hi,

I started getting these errors:

Code:

Nov 13 19:46:09 NAS daemon.notice ntpd[1846]: frequency error 501 PPM exceeds tolerance 500 PPM
Nov 13 19:48:05 NAS daemon.notice ntpd[1846]: frequency error 509 PPM exceeds tolerance 500 PPM

Anyone know what they mean or how to correct them?  The NTP website says its could mean a problem in the hardware or kernel.

Also, how do I adjust the frequency of time syncs?  It just seems to do it WAY too often.  Maintaining the correct time is not critical to my use and 1-2 times a day is sufficient.  Right now its every couple minutes.

Thanks

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#2 2008-11-14 06:15:24

jesbo
Member
From: Falls Church, VA
Registered: 2008-08-28
Posts: 101

Re: ntpd frequency error & update interval

You need to use adjtimex at startup to adjust the kernel clock speed.  If you are running ffp, check to see if your /ffp/etc/fun_plug.local is enabled and has the adjtimex setting specified.  I had to adjust mine to "adjtimex -t 9968", which brought the drift back to a low number (I assume 0 drift is optimal); In my case about 40.


DNS-323 (H/W ver. B1) |  2 x 1 TB WD Caviar Black (Raid 1) | Corsair Flash Voyager - 16 GB USB | FW 1.08 | fun_plug 0.5

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#3 2008-11-14 08:14:34

bkim
Member
Registered: 2008-08-20
Posts: 20

Re: ntpd frequency error & update interval

Ah... I thought ntpd was all I needed and disabled adjtimex.sh.

Thanks!

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#4 2008-11-14 18:38:29

quattro
Member
Registered: 2008-10-28
Posts: 21

Re: ntpd frequency error & update interval

ntpd -x

will do the trick too and is less crude.

see
man ntpd
for details.

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