From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dustin Kirkland Subject: Re: sync guest calls made async on host - SQLite performance Date: Tue, 13 Oct 2009 23:12:38 -0500 Message-ID: References: <4ABC6AA5.6080909@tauceti.net> <4ACCEC9F.7090309@gmail.com> <4ACE0196.9010904@gmail.com> <4ACF89CB.5020406@gmail.com> <4AD50883.1040305@codemonkey.ws> <4AD532E7.2010804@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Anthony Liguori , Avi Kivity , RW , kvm@vger.kernel.org To: Matthew Tippett Return-path: Received: from mail-fx0-f227.google.com ([209.85.220.227]:48133 "EHLO mail-fx0-f227.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750729AbZJNENP convert rfc822-to-8bit (ORCPT ); Wed, 14 Oct 2009 00:13:15 -0400 Received: by fxm27 with SMTP id 27so11066812fxm.17 for ; Tue, 13 Oct 2009 21:12:38 -0700 (PDT) In-Reply-To: <4AD532E7.2010804@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, Oct 13, 2009 at 9:09 PM, Matthew Tippett w= rote: > I believe that I have removed the benchmark from discussion, we are n= ow > looking at semantics of small writes followed by =2E.. > And quoting from Dustin > > =3D=3D=3D > I have tried this, exactly as you have described. =A0The tests took: > > =A0* 1162.08033204 seconds on native hardware > =A0* 2306.68306303 seconds in a kvm using if=3Dscsi disk > =A0* 405.382308006 seconds in a kvm using if=3Dvirtio Hang on now... My timings are from running the Phoronix test *as you described*. I have not looked at what magic is happening inside of this Phoronix test. I am most certainly *not* speaking as to the quality or legitimacy of the test. :-Dustin