From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erik Jacobson Subject: Re: slow guest performance with build load, looking for ideas Date: Fri, 3 Jul 2009 11:28:29 -0500 Message-ID: <20090703162829.GC16780@sgi.com> References: <20090612210443.GA21840@sgi.com> <4A34C3D2.9020009@redhat.com> <20090618230744.GA19307@sgi.com> <4A477B8C.2010502@redhat.com> <20090628190500.GA7347@sgi.com> <4A47E06A.7040700@redhat.com> <20090701214128.GA1380@sgi.com> <4A4C4A28.1060105@redhat.com> <4A4C80AD.7010204@redhat.com> <1246635797.13604.7.camel@blaa> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Avi Kivity , Erik Jacobson , kvm@vger.kernel.org To: Mark McLoughlin Return-path: Received: from relay2.sgi.com ([192.48.179.30]:54781 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755943AbZGCQ20 (ORCPT ); Fri, 3 Jul 2009 12:28:26 -0400 Content-Disposition: inline In-Reply-To: <1246635797.13604.7.camel@blaa> Sender: kvm-owner@vger.kernel.org List-ID: > Haven't followed the thread in great detail, but has anyone tried > putting the virtio disk back into rotational mode? Thanks Mark. I have not tried this yet. To be honest, I wasn't fully understanding some of Avi's last comments and was waiting for one of my co-workers to be available to help me parse them. I plan to perform Avi's suggestions, plus this rotational idea, early next week. I'll update the BZs too. By the way, a request to work-order a system for a few weeks to play with this stuff was approved. This means I'll have easier access to a nicely configured multi-socket Nehalem system for a while, starting perhaps a week or two from now. At this moment, I have to beg for time slices. Even before I get temporary access to that box, I'm happy to run tests for people who don't have access to this hardware right now. I'll have to be a go-between though as my idea to put it outside the firewall didn't quite work out. Really, I'm looking to encourage scalability here that will help big NUMA systems do virtualization well. I'm not a big kernel hacker like Jes (I just dabble) but hopefully I can find my own way to contribute. Thanks again. > > See also: > > https://bugzilla.redhat.com/509383 > > and: > > http://lkml.org/lkml/2008/10/27/84 > > Cheers, > Mark. > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Erik Jacobson - Linux System Software - SGI - Eagan, Minnesota