From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jon Nelson" Subject: Re: Benchmarks: Linux Kernel RAID vs a Hardware RAID setup Date: Tue, 15 Jul 2008 12:06:04 -0500 Message-ID: References: <1216130769.5633.318.camel@sam.localdomain> <20080715163932.GA23164@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20080715163932.GA23164@rap.rap.dk> Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: =?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= Cc: Ben Martin , linux-raid@vger.kernel.org List-Id: linux-raid.ids I would add to that request that you consider using a smaller chunk siz= e. My own benchmarks showed that for some raid levels and layouts, a smaller chunk size gave the best overall performance. On Tue, Jul 15, 2008 at 11:39 AM, Keld J=F8rn Simonsen = wrote: =2E.. > It would be interesting if you could enhance your article with benchm= arks > on raid10, f2 and o2 layouts. I think they would outperform HW raid, = at > least on input. And I would like to see how they perform on outout an= d > rewrite, with ext3 and xfs. We do have some tests, but many of them a= re > without a file system layer. --=20 Jon -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html