"avoid overflows in kernel/time" breakes my ondemand scheduler

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* "avoid overflows in kernel/time" breakes my ondemand scheduler
@ 2008-02-13  8:38 Christian Borntraeger
  2008-02-13 18:37 ` H. Peter Anvin
  0 siblings, 1 reply; 2+ messages in thread
From: Christian Borntraeger @ 2008-02-13  8:38 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: linux-kernel

Hello H. Peter,

the patch "avoid overflows in kernel/time" makes the ondemand cpufreq 
scheduler unusable. It looks like the cpufreq scheduler takes minutes to 
react on load changes.

I looked at the patch but did not found an obvious problem. Reverting this 
patch seems to fix the problem.

Do you have any ideas?

Christian 

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: "avoid overflows in kernel/time" breakes my ondemand scheduler
  2008-02-13  8:38 "avoid overflows in kernel/time" breakes my ondemand scheduler Christian Borntraeger
@ 2008-02-13 18:37 ` H. Peter Anvin
  0 siblings, 0 replies; 2+ messages in thread
From: H. Peter Anvin @ 2008-02-13 18:37 UTC (permalink / raw)
  To: Christian Borntraeger; +Cc: linux-kernel

Christian Borntraeger wrote:
> Hello H. Peter,
> 
> the patch "avoid overflows in kernel/time" makes the ondemand cpufreq 
> scheduler unusable. It looks like the cpufreq scheduler takes minutes to 
> react on load changes.
> 
> I looked at the patch but did not found an obvious problem. Reverting this 
> patch seems to fix the problem.
> 
> Do you have any ideas?
> 
> Christian 

Yes, a patch has already been sent upstream.

	-hpa

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2008-02-13  8:38 "avoid overflows in kernel/time" breakes my ondemand scheduler Christian Borntraeger
2008-02-13 18:37 ` H. Peter Anvin

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