Subject: Re: [RFC PATCH] Regression in linux 2.6.32 virtio_net seen with vhost-net

From: Jarek Poplawski <[email-masked]>
Date: Thu, 17 Dec 2009 23:41:54 +0100

On Thu, Dec 17, 2009 at 02:28:10PM -0800, Sridhar Samudrala wrote:
> Another interesting observation that Jarek pointed out is that if we drop skb's, i guess
> it is causing TCP to backoff and enabling TCP GSO code to send much larger packets(64K 
> compared to 16K). So although the throughput is higher, packets/sec is less in that
> case.

Maybe you're right, but there would be useful to have TCP-independent
tests to compare, or at least without such impact, so with GSO disabled.

Jarek P.