From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HrwKF-0000pb-KV for qemu-devel@nongnu.org; Sat, 26 May 2007 09:28:55 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HrwKC-0000nE-7L for qemu-devel@nongnu.org; Sat, 26 May 2007 09:28:55 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HrwKB-0000n9-Tl for qemu-devel@nongnu.org; Sat, 26 May 2007 09:28:51 -0400 Received: from mail.codesourcery.com ([65.74.133.4]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HrwKB-0005eP-7R for qemu-devel@nongnu.org; Sat, 26 May 2007 09:28:51 -0400 From: Paul Brook Subject: Re: [Qemu-devel] cpu-speed Date: Sat, 26 May 2007 14:28:45 +0100 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200705261428.45928.paul@codesourcery.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 Cc: Christian Buhtz On Saturday 26 May 2007, Christian Buhtz wrote: > Is it possible to manipulate the cpu-speed down? No. qemu is not cycle accurate, and has no useful way of measuring effective emulated CPU speed. A direct implication of this is that it is not meaningful to try and regulate the "speed" of the emulated cpu. You can of course use the facilities provided by your host OS to regulate the amount of host CPU time qemu gets. Paul