Re: Improved UDP performance using 2.6.21-rc5-rt10

[dave_sperry@xxxxxxxx]

Ingo, Here are some more results:

Nvidia w/cyclesoak
 2.6.21-rc5-rt10           938          32%
    netperf @51
    hardirq @50
    softirq @50

Nvidia w/top
 2.6.21-rc5-rt12           938          31%
    netperf @51
    hardirq @50
    softirq @50

Hopefully I'll run some more tests in the morning

Thanks,
Dave
 -------------- Original message ----------------------
From: Ingo Molnar <mingo@xxxxxxx>
> 
> * dave_sperry@xxxxxxxx <dasperry@xxxxxxxxxxx> wrote:
> 
> > rt10 shows a big improvement over rt8
> > 
> > ##################################################
> > etup                    Thruput      CPU% 
> > Nvidia
> > 2.6.21-rc5-rt8           938          65%
> >    netperf @51
> >    hardirq @50
> >    softirq @50
> > 
> > Nvidia
> > 2.6.21-rc5-rt10           938          32%
> >    netperf @51
> >    hardirq @50
> >    softirq @50
> 
> cool! Btw., could you run the same but without running cyclesoak, and 
> only watching the 'idle' metric in 'top' or vmstat? I found in my 
> experiments that cyclesoak sometimes interfers with the workload - and 
> the idle stats are precise and accurate on -rt. (they are not on 
> vanilla)
> 
> 	Ingo

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