From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Denk Subject: Re: Optimize RAID0 for max IOPS? Date: Mon, 24 Jan 2011 21:43:31 +0100 Message-ID: <20110124204331.481AEB187@gemini.denx.de> References: <20110118210112.D13A236C@gemini.denx.de> <4D361F26.3060507@stud.tu-ilmenau.de> <20110119192104.1FA92D30267@gemini.denx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: In-reply-to: Sender: linux-raid-owner@vger.kernel.org To: CoolCold Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Dear CoolCold, In message you wrote: > > > So can anybody help answering these questions: > > > > - are there any special options when creating the RAID0 to make it > > perform faster for such a use case? > > - are there other tunables, any special MD / LVM / file system / > > read ahead / buffer cache / ... parameters to look for? > XFS is known for it's slow speed on metadata operations like updating > file attributes/removing files..but things gonna change after 2.6.35 > where delaylog is used. Citating Dave Chinner : > < dchinner> Indeed, the biggest concurrency limitation has > traditionally been the transaction commit/journalling code, but that's > a lot more scalable now with delayed logging.... > > So, you may need to benchmark fs part. Thanks a lot - much appreciated. The first reply that actually was on topic... 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 It is not best to swap horses while crossing the river. - Abraham Lincoln