From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 3 Jul 2001 11:59:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 3 Jul 2001 11:59:42 -0400 Received: from cop.Informatik.TU-Cottbus.DE ([141.43.3.1]:43704 "EHLO cop.Informatik.TU-Cottbus.DE") by vger.kernel.org with ESMTP id ; Tue, 3 Jul 2001 11:59:29 -0400 Date: Tue, 3 Jul 2001 17:59:22 +0200 From: Guenter Millahn To: "David S. Miller" Cc: Aaron Lehmann , linux-kernel@vger.kernel.org, jakub@redhat.com Subject: Re: Linux speed on sun4c Message-ID: <20010703175922.A7970@pt.Informatik.TU-Cottbus.DE> Reply-To: Guenter.Millahn@Informatik.TU-Cottbus.DE (Guenter Millahn) In-Reply-To: <20010630220612.C14361@vitelus.com> <15166.50418.583094.554723@pizda.ninka.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: <15166.50418.583094.554723@pizda.ninka.net> Organization: Brandenburg University of Technology, DB & IS Group, Cottbus X-Phone: +49 (355) 69-2272 or -2700 X-Fax: +49 (355) 69-2766 X-Business-Email: Guenter.Millahn@Informatik.TU-Cottbus.DE X-Private-Email: Guenter.Millahn@Web.DE X-URL: http://WWW.Informatik.TU-Cottbus.DE/~gm/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 30 Jun 2001, David S. Miller wrote: > Aaron Lehmann writes: > > NetBSD/Sparc's FAQ asserts: > > > > Why is NetBSD so much faster than SparcLinux on sun4c (top) > > > > The memory management hardware on sun4c machines (SPARCStation > > 1, 1+, 2, IPC, IPX, SLC, ELC and clones) is not handled particularly > > well by Linux. Until Linux reworks their MMU code NetBSD will be very > > much faster on this hardware. > > > > Was there ever any truth to this statement? It seems to be light on > > technical details. Have these purported issues ever been fixed? > > > > I don't want to be scared into running NetBSD on my SparcStation 2 :D. What about OpenBSD? Same as NetBSD? > It's totally true, use *BSD on your sun4c systems if top performance > is your desire. :-) > > I know how to fix it but frankly I have no desire to work on > that platform any more. > > Later, > David S. Miller > davem@redhat.com David, can you publish your idea for a fix? Possibly anybody elese can make the patch? Thanks, Guenter -- Dipl.-Ing. Guenter Millahn Brandenburg University of Technology Systems, Network & DB Admin CS Dept / DB & IS Research Group Voice: +49 (355) 69-2272/2700 P.O. Box: 10 13 44 Fax: +49 (355) 69-2766 D-03013 Cottbus GERMANY "The real world is still far away from be led ad absurdum by the virtual one." (Hal Faber, newsreel "What happened, what will be", 08/13/2000)