From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-14) on finch.gentoo.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DMARC_NONE,MAILING_LIST_MULTI, NICE_REPLY_A autolearn=unavailable autolearn_force=no version=4.0.0 Received: from Darkmere.psychozone (foo.stahl.nu [194.18.231.27]) by chiba.3jane.net (Postfix) with ESMTP id 3BCC42019D46 for ; Sun, 7 Apr 2002 21:44:09 -0500 (CDT) Received: from Darkmere.psychozone (localhost [127.0.0.1]) by Darkmere.psychozone (Postfix) with SMTP id C344122DF2 for ; Mon, 8 Apr 2002 04:46:20 +0200 (CEST) Date: Mon, 8 Apr 2002 04:46:12 +0200 From: Spider To: gentoo-dev@gentoo.org Subject: Re: [gentoo-dev] GCC 3 Vs GCC 2 and some other stuff Message-Id: <20020408044612.4489e915.spider@gentoo.org> In-Reply-To: References: Organization: Chaotic X-Mailer: Sylpheed version 0.7.4 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; boundary="=.E6pUIRnITy).tf" Sender: gentoo-dev-admin@gentoo.org Errors-To: gentoo-dev-admin@gentoo.org X-BeenThere: gentoo-dev@gentoo.org X-Mailman-Version: 2.0.6 Precedence: bulk Reply-To: gentoo-dev@gentoo.org List-Help: List-Post: List-Subscribe: , List-Id: Gentoo Linux developer list List-Unsubscribe: , List-Archive: X-Archives-Salt: 3321af4e-7a32-4ce8-acbc-f6d69487643c X-Archives-Hash: 5fa41614e180bc7ec8e483b2cc451f8f --=.E6pUIRnITy).tf Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit I know well that this is was completely unscientific and unreproductible behaviour, with only one run and so on. PDC20265: chipset revision 2 PDC20265: not 100% native mode: will probe irqs later PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode. ide2: BM-DMA at 0x7400-0x7407, BIOS settings: hde:DMA, hdf:pio ide3: BM-DMA at 0x7408-0x740f, BIOS settings: hdg:pio, hdh:pio hde: Maxtor 5T030H3, ATA DISK drive its an Athlon t-bird 1GHz MemTotal: 288548 kB (PC-100 SDRAM) Filesystem on the drive used for compilations are ReiserFS. Using r5 hash to sort names ReiserFS version 3.6.25 also, the fact that I dont use the same compiler flags for both compilers are a dead giveaway. Better code, I can't speak for. More tests, I can, I've had to patch up some c++ code in order to fit the stricter tests, something I consider good. cpu idle time doesn't matter much when diskaccess is ventured, should I ever intend to do a good benchmark I'd use tmpfs for the whole process, and make sure I dont run out of RAM while doing it. This is a user comparsion, the feeling of how long things take to compile c++. And yes, the machine was in "normal use" at the time. Xchat, sylpheed and some aterm's. bad behaviour for a benchmarker. But standard for me whenever I compile things, and thats how I wanted the comparsion done. kernel is for once the default gentoo one, something I seldom use normally. (I prefer -jam series) //Spider > > So, regarding your benchmarks Spider. There is something wrong, > definately. And I think our gentoo kernel heads around here should > take a close look at it. Sure, GCC 3.X *is* slower on compilation > time, however, your tests show a very disturbing fact: Under some > circumstances, your CPU seems to spend unreasonable amount of time not > doing anything. This could be an indication of a bigger issue, > possibly a configuration or a hardware issue. There might be an issue > going on with the cache or the filesystem or even the loader. How much > memory the PC you used has and what kind of drive and filesystem did > you use? (I hope that all this is not a side effect of one of the > Gentoo kernel patches...) > -- begin happy99.exe This is a .signature virus! Please copy me into your .signature! See Microsoft KB Article Q265230 for more information. end --=.E6pUIRnITy).tf Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) iD8DBQE8sQR2XNNftdcUD70RAissAJ4ukODWjh9JXElQysrMspY6FVuY4wCghWhU jsVZo81iDVt1cDybbhfPY/I= =Bkb5 -----END PGP SIGNATURE----- --=.E6pUIRnITy).tf--