From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36795) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UygOE-0006R1-Bh for qemu-devel@nongnu.org; Mon, 15 Jul 2013 06:52:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UygOC-0002bk-Vu for qemu-devel@nongnu.org; Mon, 15 Jul 2013 06:52:22 -0400 Received: from mail-qa0-x233.google.com ([2607:f8b0:400d:c00::233]:58554) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UygOC-0002bc-QV for qemu-devel@nongnu.org; Mon, 15 Jul 2013 06:52:20 -0400 Received: by mail-qa0-f51.google.com with SMTP id f11so1492485qae.17 for ; Mon, 15 Jul 2013 03:52:20 -0700 (PDT) MIME-Version: 1.0 Date: Mon, 15 Jul 2013 18:52:20 +0800 Message-ID: From: Stefan Hajnoczi Content-Type: text/plain; charset=ISO-8859-1 Subject: [Qemu-devel] Performance regression "ioport: Switch dispatching to memory core layer" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel , Jan Kiszka Cc: Paolo Bonzini The following qemu.git commit adds a ~2 minute regression in boot time to a x86_64 live CD: commit b40acf99bef69fa8ab0f9092ff162fde945eec12 Author: Jan Kiszka Date: Mon Jun 24 10:45:09 2013 +0200 ioport: Switch dispatching to memory core layer After the ISOLINUX menu, the display goes white and sits there for about 2 minutes on my laptop before the usual Linux boot screen appears. $ qemu-system-x86_64 -enable-kvm -cpu host -m 1024 -cdrom ~/iso/livecd.iso The parent commit immediately goes to the usual boot screen after ISOLINUX. Unfortunately I don't have a ISO download link for the live CD. Any ideas? Stefan