From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: vhost-net patches Date: Mon, 2 Nov 2009 21:46:30 +0200 Message-ID: <20091102194630.GA29395@redhat.com> References: <1256592889.10142.8.camel@localhost.localdomain> <20091027064302.GB26914@redhat.com> <1256654819.4753.6.camel@localhost.localdomain> <20091027152753.GA4622@redhat.com> <1256661378.6745.2.camel@localhost.localdomain> <20091028153859.GA28926@redhat.com> <1256748337.6433.11.camel@localhost.localdomain> <20091028165302.GB29235@redhat.com> <1256753537.24155.3.camel@localhost.localdomain> <1256800293.16022.7.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Sridhar Samudrala , Shirley Ma , David Stevens , kvm@vger.kernel.org, sri@linux.vnet.ibm.com, mashirle@linux.vnet.ibm.com To: Shirley Ma Return-path: Received: from mx1.redhat.com ([209.132.183.28]:52767 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754287AbZKBTs5 (ORCPT ); Mon, 2 Nov 2009 14:48:57 -0500 Content-Disposition: inline In-Reply-To: <1256800293.16022.7.camel@localhost.localdomain> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, Oct 29, 2009 at 12:11:33AM -0700, Shirley Ma wrote: > Hello Michael, > > I am able to get 63xxMb/s throughput with 10% less cpu utilization when > I apply deferring skb patch on top of your most recent vhost patch. The > userspace TCP_STREAM BW used to be 3xxxMb/s from upper stream git tree. > > After applying your recent vhost patch, it goes up to 53xxMb/s. Thanks for the report! I have pushed this patch (after cleaning it up and fixing raw sockets), and updated the numbers in the wiki here http://www.linux-kvm.org/page/VhostNet -- MST