On 29 Sep, Andriy Gapon wrote:
> on 29/09/2010 00:11 Don Lewis said the following:
>> On 28 Sep, Don Lewis wrote:
>>
>>
>>> % vmstat -i
>>> interrupt total rate
>>> irq0: clk 60683442 1000
>>> irq1: atkbd0 6 0
>>> irq8: rtc 7765537 127
>>> irq9: acpi0 13 0
>>> irq10: ohci0 ehci1+ 10275064 169
>>> irq11: fwohci0 ahc+ 132133 2
>>> irq12: psm0 21 0
>>> irq14: ata0 90982 1
>>> irq15: nfe0 ata1 18363 0
>>>
>>> I'm not sure why I'm getting USB interrupts. There aren't any USB
>>> devices plugged into this machine.
>>
>> Answer: irq 10 is also shared by vgapci0 and atapci1.
>
> Just curious why Local APIC timer isn't being used for hardclock on your
> system.
I'm using the same kernel config as the one on a slower !SMP box which
I'm trying to squeeze as much performance out of as possible. My kernel
config file contains these statements:
nooptions SMP
nodevice apic
Testing with an SMP kernel is on my TODO list.
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