From: Gregory Haskins <redacted>
Date: Thu, 19 Mar 2009 08:42:33 -0400

David Miller wrote:

quoted

From: Gregory Haskins <redacted>
Date: Wed, 18 Mar 2009 23:48:46 -0400

  

quoted

To see this in action, try taking a moderately large smp system
(8-way+) and scaling the number of flows.
    

I can maintain line-rate over 10GB with a 64-cpu box.

Oh man, I am jealous of that 64-way :)

How many simultaneous flows?  What hardware?  What qdisc and other
config do you use?  MTU?  I cannot replicate such results on 10GB even
with much smaller cpu counts.

Sun Neptune NIU 10G with 24 TX queues.

And it's all because of the number of TX queues, nothing more.

It is essential for good performance with any level of cpu
arity.