Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 6 Feb 2003 11:42:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 6 Feb 2003 11:42:06 -0500 Received: from pc2-cwma1-4-cust86.swan.cable.ntl.com ([213.105.254.86]:10655 "EHLO irongate.swansea.linux.org.uk") by vger.kernel.org with ESMTP id ; Thu, 6 Feb 2003 11:42:05 -0500 Subject: Re: gcc -O2 vs gcc -Os performance From: Alan Cox To: "Martin J. Bligh" Cc: Linux Kernel Mailing List , lse-tech In-Reply-To: <224770000.1044546145@[10.10.2.4]> References: <336780000.1044313506@flay> <224770000.1044546145@[10.10.2.4]> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1044553691.10374.20.camel@irongate.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.1 (1.2.1-2) Date: 06 Feb 2003 17:48:13 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 695 Lines: 15 On Thu, 2003-02-06 at 15:42, Martin J. Bligh wrote: > All done with gcc-2.95.4 (Debian Woody). These machines (16x NUMA-Q) have > 700MHz P3 Xeons with 2Mb L2 cache ... -Os might fare better on celeron > with a puny cache if someone wants to try that out gcc 3.2 is a lot smarter about -Os and it makes a very big size difference according to the numbers the from the ACPI guys. Im not sure testing with a gcc from the last millenium is useful 8) - 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/