Re: SMP and NTPD

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Jeff Vian wrote:
On Wed, 2006-04-12 at 14:40 -1000, Eric Mader wrote:
I also noticed the following in /var/log/messages:

Apr 11 09:21:19 localhost kernel: warning: many lost ticks.
Apr 11 09:21:19 localhost kernel: Your time source seems to be instable or some driver is hogging interupts


I'll bet this has something to do w/ the problem. (:-) Does anybody know how to figure out what this is about?

(I have a vague memory of having seen the same problem w/ the SMP kernel on a P4 w/ hyperthreading. On this system it was so bad that the whole system would lock up. My AMD keeps chugging along, more or less.)

The kernel 2.6.11-1.1369_FC4smp is ancient! I believe that was the
kernel FC4 was released with.

Have you tried updating the system to the latest software to see if the
problem you describe may have been fixed at some point in the last 7
months?


Updating to kernel 2.6.16-1.2069_FC4smp seems to have fixed the problem. I've been running for over an hour now, and the time seems to be rock-solid:

remote refid st t when poll reach delay offset jitter
==============================================================================
+64-112-189-11.c 204.152.184.72 2 u 47 128 377 142.229 -3.746 1.081 -gumdrop.n-conne 208.245.212.8 3 u 110 128 377 136.707 -7.827 8.428 *dsl081-199-165. .GPS. 1 u 54 128 377 142.271 -1.350 3.965 +time2.apple.com 17.254.1.71 3 u 117 128 377 76.349 -0.071 2.300

Regards,
Eric


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