On Thu, Oct 17, 2002 at 11:29:28AM +0900, Hyochang Nam wrote:
> Many people helped me to solve the interrupt distribution problem.
> We tested the throughput of Layer 3 forwarding on a SMP machine
> which equips two Zero proessor(2Ghz). This is our results:
> -------------------------
> SMP | No SMP
> -------------------------
> 230 Mbps | 330 Mbps
> -------------------------
There is something called 'irq affinity' which may be interesting for you.
See here: http://www.dell.com/us/en/esg/topics/power_ps1q02-morse.htm
/proc/irq/?/smp_affinity
> I expected that the SMP might show better throughput than "NO SMP"
> environments. But, contrary to my expectation, SMP showed poor results.
> I don't know what is my fault in the experiments.
SMP is not always a win.
Regards,
bert hubert
--
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