On Fri, Nov 25, 2011 at 09:39:11AM +0530, Krishna Kumar2 wrote:

Jason Wang [off-list ref] wrote on 11/25/2011 08:51:57 AM:

quoted

My description is not clear again :(
I mean the same vhost thead:

vhost thread #0 transmits packets of flow A on processor M
...
vhost thread #0 move to another process N and start to transmit packets
of flow A

Thanks for clarifying. Yes, binding vhosts to CPU's
makes the incoming packet go to the same vhost each
time.

Interesting, but still not sure why.
What if you bind the VCPUs but not the vhost thread?

BTW, are you doing any binding and/or irqbalance
when you run your tests? I am not running either at
this time, but thought both might be useful.

- KK

Either pinning or irqbalance is a good idea.
Doing neither means you get a random CPU handling
interrupts.

-- 
MST