[RFC] Event timers on PowerPC
Andreas Tobler
andreast at FreeBSD.org
Tue Sep 7 05:40:17 UTC 2010
On 07.09.10 06:35, Alexander Motin wrote:
> Andreas Toler wrote:
>> G5 after:
>> ---------
>> [bohrium:~] andreast% vmstat -i
>> interrupt total rate
>> cpu0:decrementer 1957106 783
> ...
>> cpu1:decrementer 176153140 70517
>> Total 179730709 71949
>
> This look strange. Is there indeed such amount of interrupts on CPU1?
> What patches have you applied? Is it constant or periodic? What can you
> see in `systat -vm 1`?
Hm, for the details we might ask Nathan.
I applied all three mentioned patches, the base patch and the two
powerpc patches.
Below the vmstat -i 1 output. The system is up for 5' now. No activity,
only a few times the below command. The values of the decrementer
increases continously. About ten within 2''. (early morning observing)
I'll be back in the evening for further tests.
Andreas
[bohrium:~] andreast% vmstat -i 1
interrupt total rate
cpu0:decrementer 49668 172
irq42: iichb0 690 2
irq312: htpic0 691 2
irq316: aoagpio0 1 0
irq282: iichb1 30 0
irq257: pcm0 1 0
irq283: ohci0 1 0
irq284: ohci1 1 0
irq319: ohci2 ohci+ 314 1
irq295: ata0 39 0
irq296: fwohci0 11 0
irq297: gem0 591 2
irq256: atapci0 1662 5
irq376: IPI 20195 70
cpu1:decrementer 176117266 611518
Total 176191161 611774
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