From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30918 invoked by alias); 19 Jan 2004 14:48:55 -0000 Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org Received: (qmail 30906 invoked from network); 19 Jan 2004 14:48:54 -0000 Received: from unknown (HELO touchme.toronto.redhat.com) (216.129.200.20) by sources.redhat.com with SMTP; 19 Jan 2004 14:48:54 -0000 Received: from redhat.com (torque.toronto.redhat.com [172.16.14.46]) by touchme.toronto.redhat.com (Postfix) with ESMTP id 94B0A800152; Mon, 19 Jan 2004 09:48:54 -0500 (EST) Message-ID: <400BEE5F.76D36B1C@redhat.com> Date: Mon, 19 Jan 2004 14:48:00 -0000 From: Vladimir Makarov MIME-Version: 1.0 To: Jan Hubicka Cc: Robert Dewar , Jan Hubicka , Marc Espie , gcc@gcc.gnu.org Subject: Re: gcc 3.5 integration branch proposal References: <20040110002526.GA13568@disaster.jaj.com> <82D6F34E-4306-11D8-BDBD-000A95B1F520@apple.com> <20040110154129.GA28152@disaster.jaj.com> <1073935323.3458.42.camel@minax.codesourcery.com> <1073951351.3458.162.camel@minax.codesourcery.com> <20040119034216.0593F48A4@quatramaran.ens.fr> <20040119112943.GF31365@atrey.karlin.mff.cuni.cz> <400BE5F7.8020907@gnat.com> <20040119141825.GQ7878@kam.mff.cuni.cz> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-SW-Source: 2004-01/txt/msg01289.txt.bz2 Jan Hubicka wrote: > > > Jan Hubicka wrote: > > > > >This is precisely what I intend to do now, yes. > > >I re-did your experiment on my notebook (Centrino, 256MB ram) > > > > It's useful to give the exact configuration, in particular the processor > > speed. Note that by the way Centrino does NOT designate a processor, but > > rather a system including specific wifi support, though it implies the > > Pentium-M. That's a very different core than the Pentium-4 or Pentium-4M > > so it is useful to repeat such measurements on the latter machines. > > My CPU is Pentium-M 1.3Mhz with speedstep disabled, tought it seems to > me that only interesting about it is particular CPU core that is mostly > Pentium-3 and memory/CPU speed ratio that I unforutnately don't know > offhand. > I've started work on tuning gcc to Pentium-M. It is not a exactly Pentium 3 core. Although it has constraints on insn issue analogous to Pentium-pro. Also it looks like pentium-m has a multiplier from pentium-3 too. Because the frequency processor is quite different from pentium4, the memory/CPU speed ratio is also different. Vlad