From owner-cvs-src@FreeBSD.ORG Fri Aug 20 20:45:02 2004 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 601A816A4CE; Fri, 20 Aug 2004 20:45:02 +0000 (GMT) Received: from darkness.comp.waw.pl (darkness.comp.waw.pl [195.117.238.236]) by mx1.FreeBSD.org (Postfix) with ESMTP id D9E3443D49; Fri, 20 Aug 2004 20:45:01 +0000 (GMT) (envelope-from pjd@darkness.comp.waw.pl) Received: by darkness.comp.waw.pl (Postfix, from userid 1009) id 12761ACAF1; Fri, 20 Aug 2004 22:44:58 +0200 (CEST) Date: Fri, 20 Aug 2004 22:44:58 +0200 From: Pawel Jakub Dawidek To: Petri Helenius Message-ID: <20040820204458.GA30151@darkness.comp.waw.pl> References: <41449.1092750244@critter.freebsd.dk> <200408161043.i7GAhfXs079045@repoman.freebsd.org> <20040817004407.GA81257@wantadilla.lemis.com> <20040817074633.GO30151@darkness.comp.waw.pl> <20040817112900.GA31635@freebie.xs4all.nl> <20040817124020.GK88156@wantadilla.lemis.com> <20040817131612.GT30151@darkness.comp.waw.pl> <20040819024359.GA85432@wantadilla.lemis.com> <20040820193547.GZ30151@darkness.comp.waw.pl> <412656AE.5020605@he.iki.fi> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="FMJTF8LVhUQkvsEb" Content-Disposition: inline In-Reply-To: <412656AE.5020605@he.iki.fi> User-Agent: Mutt/1.4.2i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 5.2.1-RC2 i386 cc: src-committers@freebsd.org cc: cvs-src@freebsd.org cc: cvs-all@freebsd.org cc: Poul-Henning Kamp cc: Greg 'groggy' Lehey cc: Wilko Bulte cc: freebsd-performance@freebsd.org Subject: Re: RAID-3? X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Aug 2004 20:45:02 -0000 --FMJTF8LVhUQkvsEb Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Aug 20, 2004 at 10:53:18PM +0300, Petri Helenius wrote: +> Pawel Jakub Dawidek wrote: +>=20 +> >The software you can find under /usr/src/tools/tools/raidtest/ in HEAD +> >branch. +> >Test has been done for 10000 random requests (offset, size and operation +> >type was random). +> >=20 +> > +> Would it make sense to have known initialization vector for the random= =20 +> function so a specific test pattern could be reproduced at will? This=20 +> would also reduce the need for multiple repeats for a test to get good= =20 +> repeatable results. Raidtest tool works like this, i.e. first you have to generate file with random data and then use this file for every test. --=20 Pawel Jakub Dawidek http://www.FreeBSD.org pjd@FreeBSD.org http://garage.freebsd.pl FreeBSD committer Am I Evil? Yes, I Am! --FMJTF8LVhUQkvsEb Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBJmLKForvXbEpPzQRAojWAJ90e1CUZoUUIedv2InK+wxvomCgeQCfZUB5 +fCMXAHxVy/jX7GSuwFH4kI= =sMxE -----END PGP SIGNATURE----- --FMJTF8LVhUQkvsEb--