From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51427) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUzva-0005xD-5z for qemu-devel@nongnu.org; Fri, 19 Sep 2014 11:17:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XUzvR-00079c-5g for qemu-devel@nongnu.org; Fri, 19 Sep 2014 11:16:54 -0400 Received: from mail-wi0-x236.google.com ([2a00:1450:400c:c05::236]:43367) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUzvR-00079I-09 for qemu-devel@nongnu.org; Fri, 19 Sep 2014 11:16:45 -0400 Received: by mail-wi0-f182.google.com with SMTP id hi2so2205051wib.15 for ; Fri, 19 Sep 2014 08:16:39 -0700 (PDT) Sender: Paolo Bonzini Message-ID: <541C48D1.8050403@redhat.com> Date: Fri, 19 Sep 2014 17:16:33 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1410793421-6453-1-git-send-email-pbonzini@redhat.com> <541B440F.4080000@gmail.com> In-Reply-To: <541B440F.4080000@gmail.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v2 00/14] TCG ppc speedups List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Tom Musta , qemu-devel@nongnu.org Cc: agraf@suse.de Il 18/09/2014 22:43, Tom Musta ha scritto: > I also attempted to identify the speedup of just these patches. My > test was booting an Ubunutu 14.04 (PPC64LE) image to the login > prompt, checking some of the timestamps along the way. I was able to > observe a speedup on a modest sized laptop (x86) host -- about 2%. I > did not see any difference on a Power7 host. > You probably can get a higher speedup on user-mode emulation. I saw a much smaller difference on my old G4 laptop too, compared to x86. Paolo