From owner-freebsd-current Tue Jan 23 13:15:05 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id NAA17217 for current-outgoing; Tue, 23 Jan 1996 13:15:05 -0800 (PST) Received: from news1.gtn.com (news1.gtn.com [192.109.159.3]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id NAA17158 for ; Tue, 23 Jan 1996 13:13:39 -0800 (PST) Received: (from uucp@localhost) by news1.gtn.com (8.7.2/8.7.2) id WAA16495; Tue, 23 Jan 1996 22:00:29 +0100 (MET) Received: (from andreas@localhost) by knobel.gun.de (8.7.3/8.7.3) id VAA02000; Tue, 23 Jan 1996 21:54:10 +0100 (MET) From: Andreas Klemm Message-Id: <199601232054.VAA02000@knobel.gun.de> Subject: Re: dhrystone 2.1 result for gcc-2.7.2 with Pentium patches is poor To: jdp@polstra.com (John Polstra) Date: Tue, 23 Jan 1996 21:54:10 +0100 (MET) Cc: current@freebsd.org In-Reply-To: <199601231657.IAA14392@austin.polstra.com> from "John Polstra" at Jan 23, 96 08:57:41 am X-Mailer: ELM [version 2.4 PL24 ME8b] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-current@freebsd.org Precedence: bulk > I haven't tried those patches, but this kind of thing comes up regularly > in compiler-related newsgroups. Look: the Dhrystone "benchmark" is > _completely_ worthless and meaningless for today's compilers. You are > wasting your time messing with it. It will only mislead you. Ok, but then please tell me another easy way how I can proofe the quality of the resulting code... I simply thought, that _if_ there are patches for gcc, that add support for a Pentium processor, then nearly every kind of executable should speed up because gcc now uses the whole power of ... hmmm let's say instruction set. I really didn't expect slower results. Please explain to me why you think, that those Pertium patches are possibly really ok if the dhrystone result is relatively poor. Andreas /// -- andreas@knobel.gun.de /\/\___ Wiechers & Partner Datentechnik GmbH Andreas Klemm ___/\/\/ - Support Unix - aklemm@wup.de - \/ ftp://sunsite.unc.edu/pub/Linux/system/Printing/aps-491.tgz apsfilter - magic print filter 4lpd >>> knobel is powered by FreeBSD <<<