David L wrote:
The timer interrupt is incrementing very slowly. Instead of 1000 Hz it's incrementing about once or twice per minute. What would cause that? I had ntpd running, but I killed it.
There's your answer - kernel bug specific to your hardware.
Try downgrading your kernel to an earlier release, and see if the timer (and other issues) disappear.
OK, I downgraded to 2.6.12 and let it run overnight. Oddly, the timer was getting 4 interrupts per second this morning. The overnight average was about 20 interrupts per second, which might mean it ran for 7.5 minutes at 1000 Hz and then switched to 4 Hz. However, the date/time reported is correct, unlike when my system was "hanging" before.
The system seems pretty fast and responsive, but I think top is under-reporting the CPU usage by different processes. Processes that usually suck a lot of CPU are reporting less than 1%. Are there any kernel compatibility compatibility problems with running 2.6.12 with fc5?
Thanks...
David
PS - Since my problem was intermittent, I'm not sure if it has gone away. I still am seeing something weird wrt the timer interrupts.
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