From: "J. Bruce Fields" Subject: Re: [NFS] How to set-up a Linux NFS server to handle massive number of requests Date: Tue, 15 Apr 2008 09:58:22 -0400 Message-ID: <20080415135822.GA32218@fieldses.org> References: <47FE044A.7020008@aei.mpg.de> <20080411230754.GI24830@fieldses.org> <1208234913.17169.50.camel@trinity.ogc.int> <48044055.2060500@aei.mpg.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net To: Carsten Aulbert Return-path: Received: from neil.brown.name ([220.233.11.133]:43680 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754609AbYDON6x (ORCPT ); Tue, 15 Apr 2008 09:58:53 -0400 Received: from brown by neil.brown.name with local (Exim 4.63) (envelope-from ) id 1JllgR-00023x-RG for linux-nfs@vger.kernel.org; Tue, 15 Apr 2008 23:58:51 +1000 In-Reply-To: <48044055.2060500-l1a6w7hxd2yELgA04lAiVw@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Tue, Apr 15, 2008 at 07:42:45AM +0200, Carsten Aulbert wrote: > By the ways, discussing this issue with my colleague cluster admins, the > question popped up, if there is a guideline/rule of thump of how many > nfsd one should run - or asking the other way round, how to arrive at a > good compromise. > > Our server boxes are pretty big (8 cores, 16 GB memory, 16 disk > Areca1261 RAID6), so the resources used by the nfsd are not much of an > issue - I even tested with 1024 nfsd idling around. AT some point > increasing the number does not make much sense because I cannot get the > data out fast enough or the seeks will likely "kill" the box^Wperformance. > > Any thoughts on that? The only advice I know of is to check the "th" line in /proc/net/rpc/nfsd and adjust the number of threads until you can verify that they're rarely all in use; see http://nfs.sourceforge.net/nfs-howto/ar01s05.html#nfsd_daemon_instances --b. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs _______________________________________________ Please note that nfs@lists.sourceforge.net is being discontinued. Please subscribe to linux-nfs@vger.kernel.org instead. http://vger.kernel.org/vger-lists.html#linux-nfs