Re: Rescheduling Interrupts

[Török Edwin]

Arjan van de Ven wrote:
> Peter Hüwe wrote:
>   
>> Hi,
>>
>> I just launched powertop on my amd64 machine and the top wakeup cause is
>>  
>>   33,8% ( 92,9)      <kernel IPI> : Rescheduling interrupts
>>
>> can someone tell me what this exactly means? How do I get rid of them?
>>     
>
> these are caused by the kernel; the kernel is waking a cpu up to start 
> executing code there, because the cpu that the kernel is on at that 
> point is overloaded.
>   

I've seen "rescheduling interrupts" when I also see "extra timer
interrupts". This occurs before I apply the jiffie-rounding patch.
BTW I was under the impression that the jiffie-rounding stuff is in
2.6.24-rc. Its not. Anything keeping it from being merged?
> Having said that, I'm getting the impression the 2.6.24-rc kernel is a 
> tad... too agressive in doing this
>   

I have the impression that 2.6.23 showed less wakeups due to
"rescheduling interrupts".


--Edwin

_______________________________________________
Power mailing list
Power@bughost.org
http://www.bughost.org/mailman/listinfo/power