Re: Improved UDP performance using 2.6.21-rc5-rt10

From: Ingo Molnar
Date: Tue Apr 03 2007 - 17:26:34 EST



* 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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/