From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: large amount of NMI_INTERRUPT disgrade winxp VM performance much. Date: Thu, 11 Aug 2011 12:54:05 +0300 Message-ID: <4E43A6BD.80908@redhat.com> References: <625BA99ED14B2D499DC4E29D8138F15062D2B8909F@shsmsx502.ccr.corp.intel.com> <4E437A2A.30606@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "Tian, Kevin" , "kvm@vger.kernel.org" To: ya su Return-path: Received: from mx1.redhat.com ([209.132.183.28]:24544 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754817Ab1HKJyL (ORCPT ); Thu, 11 Aug 2011 05:54:11 -0400 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On 08/11/2011 11:59 AM, ya su wrote: > Hi, Avi: > > Your guess is right, the fast server is AMD with NPT. this slow > server is Intel's 7430 with no EPT, I now understand the reserved bit > come from kvm's virtual soft-mmu. > > But there is still one confusing problem: why a FC14 VM has a much > better storage IO performance on the same host? > Hard to tell. Please post a much larger log somewhere (not in email - it wraps horribly). -- error compiling committee.c: too many arguments to function