Sridhar Samudrala <sri@us.ibm.com> wrote on 09/10/2010 04:30:24 AM:

quoted text
> I remember seeing similar issue when using a separate vhost thread for
> TX and
> RX queues.  Basically, we should have the same vhost thread process a
> TCP flow
> in both directions. I guess this allows the data and ACKs to be
> processed in sync.

I was trying that by sharing threads between rx and tx[0], but
that didn't work either since guest rarely picks txq=0. I was
able to get reasonable single stream performance by pinning
vhosts to the same cpu.

Thanks,

- KK

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html