From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Martin Subject: Re: Benchmarks: Linux Kernel RAID vs a Hardware RAID setup Date: Wed, 16 Jul 2008 13:25:31 +1000 Message-ID: <1216178731.5633.337.camel@sam.localdomain> References: <1216130769.5633.318.camel@sam.localdomain> <20080715194143.GA25566@rap.rap.dk> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-wkrh81B3DGL3rvELSaug" Return-path: In-Reply-To: <20080715194143.GA25566@rap.rap.dk> Sender: linux-raid-owner@vger.kernel.org To: Keld =?ISO-8859-1?Q?J=F8rn?= Simonsen Cc: linux-raid@vger.kernel.org, Ben Martin List-Id: linux-raid.ids --=-wkrh81B3DGL3rvELSaug Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Tue, 2008-07-15 at 21:41 +0200, Keld J=C3=B8rn Simonsen wrote: > On Wed, Jul 16, 2008 at 12:06:09AM +1000, Ben Martin wrote: > > Hi, > > Apologies if posting this here is inappropriate but a recent article > > of mine compares the Linux Kernel RAID code to an $800 hardware RAID > > card and might be of interest to list members: > >=20 > > http://www.linux.com/feature/140734 >=20 > Thanks for this! I have written about it on the wiki. Excellent :) >=20 > I see that the Adaptec has a mode 1E which looks a lot like Linux > raid10,o2. It could be fun to compare these, and also raid10,f2. I'd also like to compare the 5EE type modes as RAID-6 does bring a fair degradation of performance for its two failure protection. >=20 > Also, if you wish, it would be nice to see what can actually be achieved > without the expensive Adaptec card, that is what can be done with the > controller on the mobo, with arrays with 4 disks. I was actually a bit worried that the card was geared toward middle tear as there are more performance oriented cards around (including the commensurate price). >=20 > And also if the mobo controller has raid types, what could be achieved > with this....=20 This would be very interesting. Taking a common middle level P45 board and benchmarking the mobo RAID vs the kernel RAID. >=20 > best regards > keld --=-wkrh81B3DGL3rvELSaug Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEABECAAYFAkh9aisACgkQsIKOrI+5WvOfdQCeKHs0XMMKLGQYNgzTkvb/npe2 y4IAn3C6XsV0eWmply5e13iuEmODIwMh =B1b9 -----END PGP SIGNATURE----- --=-wkrh81B3DGL3rvELSaug--