Timer panic on boot (r209434)
dougb at FreeBSD.org
Tue Jun 22 21:40:13 UTC 2010
On 06/22/10 14:17, Alexander Motin wrote:
> Run `sysctl kern.eventtimer.timer2=i8254`, then after few seconds check
> messages to see if system liked this timer (it should fall back
> automatically if it's not),
Seems ok. Here is what I got on the console, no error messages in
kern.eventtimer.timer2: HPET1Starting kernel event timers: HPET @ 100Hz,
t_delta 16.01a20d312197c8b0 too long
> then check 'vmstat -ia' to see whether irq0 interrupts are arriving,
This also seems fine:
interrupt total rate
??? 0 0
irq1: atkbd0 3448 1
stray irq1 0 0
irq0: attimer0 15756 6
stray irq0 0 0
irq3: 0 0
stray irq3 0 0
The total for irq0 is going up consistently.
> then run 'systat -vm 1' to be absolutely sure.
That also seemed fine. Here is a sample:
104 hpet0 uhci
If I did nothing but stare at the screen the value was fairly
consistently 100, with occasional values of 99 or 107. Once I started
moving the mouse it jumped around a little, but stabilized again when I
left the mouse alone.
Should I continue using the HPET timer? Is it "better" in some way?
Anything else I can do to help?
... and that's just a little bit of history repeating.
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