From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Tokarev Subject: Re: Virtio network performance poorer than emulated e1000 Date: Mon, 26 Jul 2010 16:44:42 +0300 Message-ID: <4C4D914A.60703@msgid.tls.msk.ru> References: <1279844304.3274.43.camel@w-sridhar.beaverton.ibm.com> <4C49409B.5000505@redhat.com> <4C4D46BC.2060106@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Balachandar , kvm@vger.kernel.org, Sridhar Samudrala To: Jes Sorensen Return-path: Received: from isrv.corpit.ru ([86.62.121.231]:38005 "EHLO isrv.corpit.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751851Ab0GZNvk (ORCPT ); Mon, 26 Jul 2010 09:51:40 -0400 In-Reply-To: <4C4D46BC.2060106@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: 26.07.2010 11:26, Jes Sorensen wrote: > On 07/24/10 17:04, Balachandar wrote: >> On Fri, Jul 23, 2010 at 3:11 AM, Jes Sorensen wrote: >> Actually i got better results when i downloaded qemu-kvm 0.12.4 from >> sourceforge and ran it. Now virtio performs better than emaulated >> e1000 with our own simple ping-pong latency tests. Previously i used >> Debian squeeze kvm package and i got poor results for virtio. I used >> vhost-net as described by the kvm >> website.http://www.linux-kvm.org/page/VhostNet. This also seem to have >> the same problems i faced with Debian kvm package. How are you guyz >> using vhost? Is there any other way to use vhost? > > Ok thats good to hear. Sounds like the Debian package might be dodgy, or > they just happened to snapshot at a bad time. I wonder which version it is - the "debian package". Are we talking about kvm-72 from debian lenny perhaps? Current version is 0.12.4-1, which is upstream 0.12.4-1 with a few bugfixes (such as >1Tb block device corruption). I'm not sure how that one might be "dogdy" or snapshotted at a bad time. Thanks! /mjt