From: Neil Brown Subject: Re: Maximum number of nfsd daemons? Date: Thu, 1 Aug 2002 14:27:03 +1000 (EST) Sender: nfs-admin@lists.sourceforge.net Message-ID: <15688.47255.83237.874274@notabene.cse.unsw.edu.au> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "'nfs@lists.sourceforge.net'" Return-path: Received: from tone.orchestra.cse.unsw.edu.au ([129.94.242.28]) by usw-sf-list1.sourceforge.net with smtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17a7Y4-0003he-00 for ; Wed, 31 Jul 2002 21:26:52 -0700 Received: From notabene ([129.94.211.194] == dulcimer.orchestra.cse.unsw.EDU.AU) (for ) (for ) By tone With Smtp ; Thu, 1 Aug 2002 14:26:26 +1000 To: Daniel Barbar In-Reply-To: message from Daniel Barbar on Wednesday July 31 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 Wednesday July 31, dbarbar@legato.com wrote: > Hi, > > We recently moved one of our NFS servers from a Sun machine running > Solaris 7 to an Intel box running SuSE Linux 8.0 (kernel 2.4.18). We are > experiencing some (rather heavy) performance problems, more so for clients > accesing the service over our WAN link. > I'm starting to go through the excerise of tuning the NFS system, and > started first by trying to increase the number of nfsd process. It seems > that there is a hard coded limit of 128 processes, is that correct? If true, > is it because one shouldn't expect any substantial performance increase by > setting the number of nfsd threads to a number larger than 128? This is correct in 2.4.18. 2.4.18 will have a substantially larger limit. Just change the #define in fs/nfsd/nfssvc.c and recompile for a larger limit. I guess when the number was chosen, computers were smaller. It could be that more than 128 threads will help you, but it would be worth checking /proc/net/rpc/nfsd to see how many threads are really being used. Send me the content of that file and I will interpret bits for you. NeilBrown ------------------------------------------------------- This sf.net email is sponsored by: Dice - The leading online job board for high-tech professionals. Search and apply for tech jobs today! http://seeker.dice.com/seeker.epl?rel_code=31 _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs