From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Denk Subject: Re: Optimize RAID0 for max IOPS? Date: Wed, 26 Jan 2011 09:42:24 +0100 Message-ID: <20110126084224.4E6E3CEA577@gemini.denx.de> References: <20110118210112.D13A236C@gemini.denx.de> <20110125171017.GA24921@infradead.org> <20110125184115.1119FB187@gemini.denx.de> <20110125213523.GA14375@infradead.org> <20110126071616.824BEBB0B9@gemini.denx.de> <4D3FDC31.3010502@hardwarefreak.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: In-reply-to: <4D3FDC31.3010502@hardwarefreak.com> Sender: linux-raid-owner@vger.kernel.org To: Stan Hoeppner Cc: Christoph Hellwig , linux-raid@vger.kernel.org List-Id: linux-raid.ids Dear Stan Hoeppner, In message <4D3FDC31.3010502@hardwarefreak.com> you wrote: > > > # lvcreate -L 32G -n test castor0 > > Logical volume "test" created > > # mkfs.xfs /dev/mapper/castor0-test > > Is this on that set of 4 low end Maxtor disks? Is the above LV sitting atop > RAID 0, RAID 5, or concatenation? No, this is the other system, using 6 x Seagate ST31000524NS on a Marvell MV88SX6081 8-port SATA II PCI-X Controller. LVM is sitting on top of a RAID6 here: md2 : active raid6 sda[0] sdi[5] sdh[4] sde[3] sdd[2] sdb[1] 3907049792 blocks super 1.2 level 6, 16k chunk, algorithm 2 [6/6] [UUUUUU] > Try adding some concurrency, say 8, to bonnie++ and retest both XFS and ext4. OK, will do. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The price of curiosity is a terminal experience. - Terry Pratchett, _The Dark Side of the Sun_