Date: Fri, 20 Aug 2004 22:44:58 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Petri Helenius <pete@he.iki.fi> Cc: freebsd-performance@freebsd.org Subject: Re: RAID-3? Message-ID: <20040820204458.GA30151@darkness.comp.waw.pl> In-Reply-To: <412656AE.5020605@he.iki.fi> 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>
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--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--
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