Date: Sun, 22 Aug 2004 23:35:18 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: freebsd-performance@FreeBSD.org Subject: Re: RAID-3? (was: cvs commit: src MAINTAINERS) Message-ID: <20040822213518.GN30151@darkness.comp.waw.pl> In-Reply-To: <24879.1093031928@critter.freebsd.dk> References: <20040820193547.GZ30151@darkness.comp.waw.pl> <24879.1093031928@critter.freebsd.dk>
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On Fri, Aug 20, 2004 at 09:58:48PM +0200, Poul-Henning Kamp wrote:
+> In message <20040820193547.GZ30151@darkness.comp.waw.pl>, Pawel Jakub Da=
widek w
+> rites:
+>=20
+> >As you can see RAID5 is only faster in READ tests for 15 and 100 proces=
ses
+> >working in parallel. As I can see, RAID3 is faster in all the rest test=
s.
+> >
+> >PS. I wonder about read optimization, so parity component can be also
+> > used for reading in round-robin fashion...
+>=20
+> I would far rather have an option to give me data-integrity checking ?
=2E..Just want to note, that I implemented both algorithms
("round-robin reading" and "verify reading") and committed to HEAD.
Enjoy:)
--=20
Pawel Jakub Dawidek http://www.FreeBSD.org
pjd@FreeBSD.org http://garage.freebsd.pl
FreeBSD committer Am I Evil? Yes, I Am!
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