From owner-freebsd-current@FreeBSD.ORG Sat Sep 25 21:58:14 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5CBDA16A4CE for ; Sat, 25 Sep 2004 21:58:14 +0000 (GMT) Received: from meitner.wh.uni-dortmund.de (meitner.wh.uni-dortmund.de [129.217.129.133]) by mx1.FreeBSD.org (Postfix) with ESMTP id E46A543D2D for ; Sat, 25 Sep 2004 21:58:13 +0000 (GMT) (envelope-from michaelnottebrock@gmx.net) Received: from lofi.dyndns.org (pc2-105.intern.meitner [10.3.12.105]) by meitner.wh.uni-dortmund.de (Postfix) with ESMTP id F0CA21674DE; Sat, 25 Sep 2004 23:58:12 +0200 (CEST) Received: from kiste.my.domain (lofi@kiste.my.domain [192.168.8.4]) (authenticated bits=0) by lofi.dyndns.org (8.12.10/8.12.10) with ESMTP id i8PLwBmG068658 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Sat, 25 Sep 2004 23:58:11 +0200 (CEST) (envelope-from michaelnottebrock@gmx.net) From: Michael Nottebrock To: freebsd-current@freebsd.org Date: Sat, 25 Sep 2004 23:58:09 +0200 User-Agent: KMail/1.7 References: <4155DC3F.5070904@freesurf.ch> In-Reply-To: <4155DC3F.5070904@freesurf.ch> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1865232.lcfOKzAzR1"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200409252358.10814.michaelnottebrock@gmx.net> X-Virus-Scanned: by amavisd-new cc: Mauro Triulzi Subject: Re: ATA disk performance (ICH2 controller), some tests and comparison with Linux 2.6.5 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Sep 2004 21:58:14 -0000 --nextPart1865232.lcfOKzAzR1 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Saturday 25 September 2004 22:59, Mauro Triulzi wrote: > Hello, > > I post some tests about the performance of my ATA disk (which is not > very spectacular under FREEBSD 6.0). Standard disclaimer (copied from UPDATING): NOTE TO PEOPLE WHO THINK THAT FreeBSD 6.x IS SLOW: FreeBSD 6.x has many debugging features turned on, in both the kernel and userland. These features attempt to detect incorrect use of system primitives, and encourage loud failure through extra sanity checking and fail stop semantics. They also substantially impact system performance. If you want to do performance measurement, benchmarking, and optimization, you'll want to turn them off. This includes various WITNESS- related kernel options, INVARIANTS, malloc debugging flags in userland, and various verbose features in the kernel. Many developers choose to disable these features on build machines to maximize performance. So... did you turn off all those? =2D-=20 ,_, | Michael Nottebrock | lofi@freebsd.org (/^ ^\) | FreeBSD - The Power to Serve | http://www.freebsd.org \u/ | K Desktop Environment on FreeBSD | http://freebsd.kde.org --nextPart1865232.lcfOKzAzR1 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBVenyXhc68WspdLARAqquAKCWg368bfDKLStpay9h2SgSvoB3ywCfWamq 7pJUNPSFDCnPpTUCJzt2NNw= =Ozfx -----END PGP SIGNATURE----- --nextPart1865232.lcfOKzAzR1--