From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.33) id 1Bh4IZ-00012E-K8 for qemu-devel@nongnu.org; Sun, 04 Jul 2004 06:32:39 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.33) id 1Bh4IY-000122-6B for qemu-devel@nongnu.org; Sun, 04 Jul 2004 06:32:39 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.33) id 1Bh4IY-00011z-1o for qemu-devel@nongnu.org; Sun, 04 Jul 2004 06:32:38 -0400 Received: from [62.210.190.9] (helo=brazzaville.magic.fr) by monty-python.gnu.org with esmtp (Exim 4.34) id 1Bh4GO-0003BB-G7 for qemu-devel@nongnu.org; Sun, 04 Jul 2004 06:30:24 -0400 Received: from [10.0.0.2] (ppp-181.net-555.magic.fr [62.210.255.181]) by brazzaville.magic.fr (8.11.6/8.11.6) with ESMTP id i64AUK423532 for ; Sun, 4 Jul 2004 12:30:20 +0200 Subject: Re: [Qemu-devel] qemu-system-ppc speed From: "J. Mayer" In-Reply-To: References: Content-Type: text/plain Message-Id: <1088937025.5502.10.camel@rapid> Mime-Version: 1.0 Date: Sun, 04 Jul 2004 12:30:25 +0200 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 On Sat, 2004-07-03 at 23:14, Natalia Portillo wrote: > It is due to emulation overhead, and the PowerPC CPU (specially the MMU) > complexity. In my opinion, PPC is far less complicated than x86.... I ran nbench under qemu-system-ppc some time ago. It gave me the emulated system was 15 times slower than the host machine. It seems to be quite acceptable to me. > > En nombre de Brad Watson > > Hi All, > > > > I've been experimenting w/running linux under > > qemu-system-ppc. My impression is that is considerably > > slower than linux running under qemu. Is it due to primarily > > endian conversion overhead or something else ? Did you compare with i386-softmmu ? -- J. Mayer Never organized