From: Hugh Caley Subject: Re: Performance Difference Between Linux NFS Server and Netapp Date: Tue, 12 Jul 2005 11:19:58 -0700 Message-ID: <42D409CE.9020204@plasmabat.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: Roger Heflin , nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1DsPMn-0006jd-Bg for nfs@lists.sourceforge.net; Tue, 12 Jul 2005 11:20:25 -0700 Received: from firewall.neomorphic.com ([205.217.46.68] helo=roma.ev.affymetrix.com) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.44) id 1DsPMm-0007bV-1O for nfs@lists.sourceforge.net; Tue, 12 Jul 2005 11:20:25 -0700 To: Joshua Baker-LePain In-Reply-To: Sender: nfs-admin@lists.sourceforge.net Errors-To: nfs-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Post: List-Help: List-Subscribe: , List-Archive: The Atabeast is an ATA-raid array, but as far as the server knows it is a 2 Gb fibre-attached SCSI disk. I get 800-900 Mb/sec sequential writes using ext3; with Reiser or JFS it is much faster. Regardless, I don't think this is very relevant. My only point was that the disk subsystem is capable of much better performance than I'm currently seeing over NFS. 300 Mb/sec seems slow to me when I have a Dual-2.6 Ghz Linux box running kernel 2.6.10 (Fedora core 2) attached to a 10 disk RAID5, and the box is doing nothing else but serving this single NFS server. Hugh Joshua Baker-LePain wrote: >On Tue, 12 Jul 2005 at 11:24am, Roger Heflin wrote > > > >>2000mbit/second is a rate that no ide disk subsystem >>will obtain, so double check your local performance, >> >> > >I have a 3ware based server that begs to differ with you -- over 150MB/s >writing, over 300MB/s reading. That's on a software RAID0 stripe across 2 >12 port controllers, with each controller doing hardware RAID5. > > > >>You will need to use a test larger than the ram size of >>the machine to get a realistic rate, at least 2x, and >>probably 4x, and maybe both just to see how things fall >>over. >> >> > >Absolutely. > > > -- "Take off your pants and get in the reptile tank." - Joe Rogan, Fear Factor Hugh Caley hcaley@plasmabat.com ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs