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: Sun, 05 Jul 2009 11:07:24 +0300 Message-ID: <4A505F3C.2090202@redhat.com> References: <20090612210443.GA21840@sgi.com> <4A34C3D2.9020009@redhat.com> <8bfce36e0907030341x32629f4er4bffc972a65c2e38@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Matty Return-path: Received: from mx2.redhat.com ([66.187.237.31]:34106 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751823AbZGEIFL (ORCPT ); Sun, 5 Jul 2009 04:05:11 -0400 In-Reply-To: <8bfce36e0907030341x32629f4er4bffc972a65c2e38@mail.gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: On 07/03/2009 01:41 PM, Matty wrote: >> What is the host cpu type? On pre-Nehalem/Barcelona processors kvm has poor >> scalability in mmu intensive workloads like kernel builds. >> > > Hey Avi, > > Are there plans to address these scalability issues for > pre-Nehalem/Barcelona processors? I poked around the KVM website, and > I don't see anything related to this. > Not really. While it is possible to scale the kvm mmu for these older processors, I don't think it's really worthwhile in terms of effort and complexity vs. return. -- error compiling committee.c: too many arguments to function