From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gianluca Guida Subject: Re: Re: Poor performance on HVM (kernbench) Date: Thu, 11 Sep 2008 17:48:07 +0100 Message-ID: <48C94BC7.5040305@eu.citrix.com> References: <1e16a9ed0809101123m71a12030v7d06501f6467f93@mail.gmail.com> <1e16a9ed0809101422p6a58304dxaa1a92847109a518@mail.gmail.com> <48C8EC48.6080507@eu.citrix.com> <48C9367B.6090003@eu.citrix.com> <1e16a9ed0809110835p73165150t3f78d75b2f2ca8eb@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1e16a9ed0809110835p73165150t3f78d75b2f2ca8eb@mail.gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: deshantm@gmail.com Cc: Muli Ben-Yehuda , Anthony Liguori , xen-devel mailing list List-Id: xen-devel@lists.xenproject.org Hello, Todd Deshane wrote: > Can you also run kernbench on native for comparison? I will. > How much RAM do you have (native and guest)? 2Gb host, 512Mb guest. > Are all your tests on Xen unstable with the code changes on and off as > you suggested? Yes. > What is the backend disk type for your HVM guest? Here's my configuration for disks (no stubdomains, btw). disk = [ 'file:/root/prova,hda,w', 'file:/local-images/debian-40r0-amd64-netinst.iso,hdc:cdrom,r'] > What is the kernel in your HVM guest? It's the standard debian 4.0 I guess, 2.6.18-4-amd64. > I will make the same changes to the xen unstable code and re-run > kernbench with shadow3 disabled > on my system. Thanks, that would be interesting to know! Gianluca