From: Paul Heinlein Subject: RE: iostat wkB/s numbers during testing Date: Fri, 14 Feb 2003 09:49:05 -0800 (PST) Sender: nfs-admin@lists.sourceforge.net Message-ID: References: <20030214173524.67891.qmail@web12205.mail.yahoo.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: "Lever, Charles" , Return-path: Received: from franklin.cse.ogi.edu ([129.95.40.9]) by sc8-sf-list1.sourceforge.net with esmtp (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 18jjxX-00056g-00 for ; Fri, 14 Feb 2003 09:49:11 -0800 To: Alan Powell In-Reply-To: <20030214173524.67891.qmail@web12205.mail.yahoo.com> Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: On Fri, 14 Feb 2003, Alan Powell wrote: > If you do lots of writes, it's especially important that you enable > the RAID controllers write-back cache The ATABoy ships with a 128MB write cache, enabled by default. > Also, ideally you'd try to keep write-intensive stuff on a RAID-1 > partition, and the rest on RAID-5, b/c RAID-5 is _very_ inefficient > at writes. If you have 6 drives, why don't you set 2 of them aside > for RAID-1 and the most write-intensive files? The filesystem we're exporting is for general-purpose use and is directory-divided among a number of customer groups. If I were setting the export up for a specific application, then your suggestion would make a whole lotta sense. I'll certainly keep it in mind if one or more customers have specific complaints about write performance. --Paul Heinlein ------------------------------------------------------- This SF.NET email is sponsored by: FREE SSL Guide from Thawte are you planning your Web Server Security? Click here to get a FREE Thawte SSL guide and find the answers to all your SSL security issues. http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs