From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shirley Ma Subject: Re: Network performance with small packets Date: Wed, 09 Mar 2011 07:42:03 -0800 Message-ID: <1299685323.25664.94.camel@localhost.localdomain> References: <20110127.130240.104065182.davem@davemloft.net> <20110202044222.GC3818@redhat.com> <201102091107.20270.rusty@rustcorp.com.au> <1299621444.25664.77.camel@localhost.localdomain> <1299637278.13202.61.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Rusty Russell , "Michael S. Tsirkin" , Krishna Kumar2 , David Miller , kvm@vger.kernel.org, netdev@vger.kernel.org, steved@us.ibm.com, Tom Lendacky To: habanero@linux.vnet.ibm.com Return-path: Received: from e31.co.us.ibm.com ([32.97.110.149]:47851 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753277Ab1CIPmQ (ORCPT ); Wed, 9 Mar 2011 10:42:16 -0500 In-Reply-To: <1299637278.13202.61.camel@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2011-03-08 at 20:21 -0600, Andrew Theurer wrote: > Tom L has started using Rusty's patches and found some interesting > results, sent yesterday: > http://marc.info/?l=kvm&m=129953710930124&w=2 Thanks. Very good experimental. I have been struggling with guest/vhost optimization work for a while. I created different experimental patches, performance results really depends on workloads. Based on the discussions and findings, seems that to improve virtio_net/vhost optimization work, we really need to collect more statistics data on both virtio_net and vhost for both TX and RX. A way to filter number of guest exits, I/O exits, irq injections in guest networking stacks only would be helpful. Thanks Shirley