From owner-freebsd-toolchain@FreeBSD.ORG Sun Sep 16 05:19:20 2012 Return-Path: Delivered-To: freebsd-toolchain@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0CF5B106566B; Sun, 16 Sep 2012 05:19:20 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 252838FC08; Sun, 16 Sep 2012 05:19:17 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q8G5JLgX045868; Sun, 16 Sep 2012 08:19:21 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q8G5J9Q6026220; Sun, 16 Sep 2012 08:19:09 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q8G5J9gZ026219; Sun, 16 Sep 2012 08:19:09 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Sun, 16 Sep 2012 08:19:09 +0300 From: Konstantin Belousov To: Dimitry Andric Message-ID: <20120916051909.GI37286@deviant.kiev.zoral.com.ua> References: <50550285.4040203@andric.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="fze0sZZmuBV4A+b2" Content-Disposition: inline In-Reply-To: <50550285.4040203@andric.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.0 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-current@freebsd.org, freebsd-toolchain@freebsd.org Subject: Re: Compiler performance tests on FreeBSD 10.0-CURRENT X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Sep 2012 05:19:20 -0000 --fze0sZZmuBV4A+b2 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Sep 16, 2012 at 12:34:45AM +0200, Dimitry Andric wrote: > Hi all, >=20 > By request, I performed a series of kernel performance tests on FreeBSD > 10.0-CURRENT, particularly comparing the runtime performance of GENERIC > kernels compiled by gcc 4.2.1 and by clang 3.2. >=20 > The attached text file[1] contains more information about the tests, > some semi-cooked performance data, and my conclusions. Any errors and > omissions are also my fault, so if you notice them, please let me know. >=20 > The executive summary: GENERIC kernels compiled with clang 3.2 are > slightly faster than those compiled by gcc 4.2.1, though the difference > will not very noticeable in practice. >=20 > Last but not least, thanks to Gavin Atkinson for providing the required > hardware. Thank you very much for doing this. I tried to map the CPUID into more human-friendly family moniker, and it seems that these are Pentium-4 class CPUs. Am I right ? If yes, could you, please, rerun the tests on anything more recent than Core2, i.e. any Core i7-whatever class of Xeons ? Thank again. --fze0sZZmuBV4A+b2 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlBVYU0ACgkQC3+MBN1Mb4jwPACgprGQgUxqIAh8z5ymqizGgesx VhYAmwdDn4Pzlz28GNHUq4s4o6kl5s/q =aK0L -----END PGP SIGNATURE----- --fze0sZZmuBV4A+b2--