From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.43) id 1DwP0e-0006t3-0Y for garchives@archives.gentoo.org; Sat, 23 Jul 2005 18:46:04 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.4/8.13.4) with SMTP id j6NIgt4s005534; Sat, 23 Jul 2005 18:42:55 GMT Received: from home.worldcontrol.com (adsl-66-125-76-26.dsl.sntc01.pacbell.net [66.125.76.26]) by robin.gentoo.org (8.13.4/8.13.4) with ESMTP id j6NIgru6025177 for ; Sat, 23 Jul 2005 18:42:54 GMT Received: from worldcontrol.com (unknown [172.16.1.10]) by home.worldcontrol.com (Postfix) with SMTP id 27E9F2B573A for ; Sat, 23 Jul 2005 11:43:34 -0700 (PDT) Received: by worldcontrol.com (sSMTP sendmail emulation); Sat, 23 Jul 2005 11:44:42 -0700 Date: Sat, 23 Jul 2005 11:44:42 -0700 From: Brian Litzinger To: gentoo-amd64@lists.gentoo.org Subject: Re: [gentoo-amd64] x86_64 optimization patches for glibc. Message-ID: <20050723184442.GA17480@localhost> References: <42E258A7.5080501@telia.com> <1122136577.16577.2.camel@localhost> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1122136577.16577.2.camel@localhost> X-No-Archive: yes X-Noarchive: yes User-Agent: Mutt/1.5.8i X-Archives-Salt: c0ea8625-3deb-4235-861d-9958eb08a71a X-Archives-Hash: 3cc4e6e6b5af6e256798a29f0e6ef4d1 > On Sat, 2005-07-23 at 16:48 +0200, Simon Strandman wrote: > > With the glibc 2.3.5 currently in gentoo I get: > > isidor ~ # ./memcpy 2200 1000 1048576 > > Memory to memory copy rate = 1291.600098 MBytes / sec. Block size = 1048576. > > > > But with glibc 2.3.5 + amd64 optimized strings I get: > > isidor ~ # ./memcpy 2200 1000 1048576 > > Memory to memory copy rate = 2389.321777 MBytes / sec. Block size = 1048576. > > > > That's an improvement of over 1000mb/s! Suse 9.3 also gives about > > 2300mb/s out of the box. pre: ./memcpy 2000 1000 1048576 Memory to memory copy rate = 1302.701782 MBytes / sec. Block size = 1048576. post: ./memcpy 2000 1000 1048576 Memory to memory copy rate = 2051.979980 MBytes / sec. Block size = 1048576. AMD64 3200+ 2.0GHz 1024MB PC2700 Compaq R3240US -- gentoo-amd64@gentoo.org mailing list