Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755185AbXKCMwW (ORCPT ); Sat, 3 Nov 2007 08:52:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753474AbXKCMwP (ORCPT ); Sat, 3 Nov 2007 08:52:15 -0400 Received: from mail.acc.umu.se ([130.239.18.156]:46590 "EHLO mail.acc.umu.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753539AbXKCMwO (ORCPT ); Sat, 3 Nov 2007 08:52:14 -0400 X-Greylist: delayed 1216 seconds by postgrey-1.27 at vger.kernel.org; Sat, 03 Nov 2007 08:52:14 EDT Date: Sat, 3 Nov 2007 13:31:49 +0100 (CET) From: =?ISO-8859-1?Q?Bo_Brant=E9n?= To: linux-kernel@vger.kernel.org Subject: x86_64 ten times slower than i386 Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 921 Lines: 18 Hello, I tryed different linux distributions on a computer with an Intel Core 2 Quad and I noticed that the 64-bit versions was at least 10 times slower than the 32-bit versions, to boot the system took over 20 minutes in 64-bit mode and then even scrolling text at the command prompt felt slow, however Vista 64 boots as fast as Vista 32 on the same computer. So I would like to ask if this is a known problem or if there is some simple misstake I can have done. I used live cd's from gentoo and ubunto and at least ubuntu has a rather new kernel, also dmesg doesn't show anything strange, for example is the bogomips figure the same as when booting in 32-bit mode. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/