-------------- Original message ----------------------
From: Ingo Molnar <[EMAIL PROTECTED]>
> 
> * [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> 
> > Thanks for all the input Ingo, Here's a list of all the permutations 
> > I've tried:
> 
> one thing i noticed is that cyclesoak interferes with the netperf 
> workload. This is quite surprising. 'top' and 'vmstat' output is 
> reliable on -rt, and the overhead goes down if i stop cyclesoak.
> 
>       Ingo

I see the same effect 

setup                    Thruput      CPU% 
cyclesoak on
2.6.21-rc5-rt8           937          74%
   netperf @51
   hardirq @50
   softirq @50

cyclesoak off
2.6.21-rc5-rt8           938          65%
   netperf @51
   hardirq @50
   softirq @50


Dave
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