From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1F7LGi-0004qH-5r for qemu-devel@nongnu.org; Thu, 09 Feb 2006 18:32:08 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1F7LGf-0004o4-Pb for qemu-devel@nongnu.org; Thu, 09 Feb 2006 18:32:07 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1F7LGf-0004nx-HR for qemu-devel@nongnu.org; Thu, 09 Feb 2006 18:32:05 -0500 Received: from [64.233.184.199] (helo=wproxy.gmail.com) by monty-python.gnu.org with esmtp (Exim 4.52) id 1F7LKJ-0003Bv-7a for qemu-devel@nongnu.org; Thu, 09 Feb 2006 18:35:51 -0500 Received: by wproxy.gmail.com with SMTP id 69so227510wra for ; Thu, 09 Feb 2006 15:32:03 -0800 (PST) Message-ID: Date: Fri, 10 Feb 2006 02:32:03 +0300 From: Phil Krylov Subject: Re: [Qemu-devel] -kernel-kqemu In-Reply-To: <43EBBBBE.3070604@us.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline 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> 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 On 10/02/06, 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. I am experiencing a huge (~5 times) speedup in compilers and linkers. Great ;)))) -- Ph.