From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: slow guest performance with build load, looking for ideas Date: Mon, 15 Jun 2009 18:27:26 +0300 Message-ID: <4A36685E.7090003@redhat.com> References: <20090612210443.GA21840@sgi.com> <4A34C3D2.9020009@redhat.com> <20090615141542.GA17448@sgi.com> <4A36598E.5050300@redhat.com> <4A3667F2.3040201@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Erik Jacobson , kvm@vger.kernel.org To: Michael Tokarev Return-path: Received: from mx2.redhat.com ([66.187.237.31]:38589 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761835AbZFOP1Z (ORCPT ); Mon, 15 Jun 2009 11:27:25 -0400 In-Reply-To: <4A3667F2.3040201@msgid.tls.msk.ru> Sender: kvm-owner@vger.kernel.org List-ID: On 06/15/2009 06:25 PM, Michael Tokarev wrote: > Avi Kivity wrote: >> On 06/15/2009 05:15 PM, Erik Jacobson wrote: > [] >>> So if I understand what you're saying: best not to use kvm guests >>> for build >>> servers with pre-Nehalem processors. >> >> pre-Nehalem / pre-Barcelona, > 4 vcpus, yes. > > How about 2 vcpus, and how about AMD processors ? 2 vcpus (or 4) should be fine. AMD processors (Barcelona+) would be good for any number of vcpus. -- error compiling committee.c: too many arguments to function