From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: sync guest calls made async on host - SQLite performance Date: Tue, 29 Sep 2009 14:02:52 -0500 Message-ID: <4AC259DC.2080807@codemonkey.ws> References: <4ABC6AA5.6080909@tauceti.net> <4ABF4E95.5070100@redhat.com> <4ABF5596.9050207@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Avi Kivity , RW , kvm@vger.kernel.org To: Matthew Tippett Return-path: Received: from mail-bw0-f220.google.com ([209.85.218.220]:44883 "EHLO mail-bw0-f220.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753548AbZI2TLH (ORCPT ); Tue, 29 Sep 2009 15:11:07 -0400 Received: by bwz20 with SMTP id 20so4618088bwz.18 for ; Tue, 29 Sep 2009 12:11:10 -0700 (PDT) In-Reply-To: <4ABF5596.9050207@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: Matthew Tippett wrote: > I have created a launchpad bug against qemu-kvm in Ubuntu. > > https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/437473 > > Just re-iterating, my concern isn't so much performance, but integrity > of stock KVM configurations with server or other workloads that expect > sync fileIO requests to be honored and synchronous to the underlying > physical disk. > > (That and ensuring that sanity reigns where a benchmark doesn't show a > guest operating 10 times faster than a host for the same test :). And I've closed it. In the future, please actually reproduce a bug before filing it. Reading it on a website doesn't mean it's true :-) Regards, Anthony Liguori