From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1FX2ri-0002fK-6C for qemu-devel@nongnu.org; Fri, 21 Apr 2006 17:08:34 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1FX2rf-0002f7-GR for qemu-devel@nongnu.org; Fri, 21 Apr 2006 17:08:33 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FX2rf-0002f4-Ad for qemu-devel@nongnu.org; Fri, 21 Apr 2006 17:08:31 -0400 Received: from [203.190.192.17] (helo=wasp.net.au) by monty-python.gnu.org with esmtp (Exim 4.52) id 1FX2tI-0004cZ-D4 for qemu-devel@nongnu.org; Fri, 21 Apr 2006 17:10:12 -0400 Message-ID: <44494A1D.4040202@wasp.net.au> Date: Sat, 22 Apr 2006 01:09:49 +0400 From: Brad Campbell MIME-Version: 1.0 Subject: Re: [Qemu-devel] -kernel-kqemu References: <20060208230434.GA28760@jbrown.mylinuxbox.org> <20060209012752.GA30423@jbrown.mylinuxbox.org> <41e41e7a0602090046p18e89050m79c914f5293b2ade@mail.gmail.com> <20060209180531.GA13429@jbrown.mylinuxbox.org> <43EBBBBE.3070604@us.ibm.com> <20060419173103.GG15855@narn.hozed.org> In-Reply-To: <20060419173103.GG15855@narn.hozed.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Troy Benjegerdes wrote: > On Thu, Feb 09, 2006 at 04:01:34PM -0600, Anthony Liguori wrote: >> Jim C. Brown wrote: >>> -kernel-kqemu virtualizes ring 0 code. >>> >>> So it basically makes qemu do what VMware does. >>> >>> IIRC someone reported a 33% speedup with the new option. >>> >> That was me. That was a 33% speedup on win2k startup time. kqemu (user >> only) has a negligible impact on win2k startup time which suggests this >> is mostly ring 0 code running which would make it a good benchmark for >> kernel-kqemu performance. >> >> This was a terribly unscientific benchmarking so don't read too much >> into it. >> >> Regards, >> >> Anthony Liguori > > My win2k guest (with SP4, but not any updates) seemed to hang on startup > with -kernel-kqemu. Are you using -m 256 by any chance? I get this result with around that much ram allocated to the guest. -m 160 (or less) or -m 384 (or more) works perfectly here.. -- "Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." -- Douglas Adams