From: Simon Peter Subject: Re: Delays on "first" access to a NFS mount Date: Wed, 7 Mar 2007 16:06:33 +0100 Message-ID: <20070307160633.77afb618.simon.peter@gmx.de> References: <20070307112347.6a40faff.simon.peter@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net To: "Talpey, Thomas" Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1HOxj5-0005fS-65 for nfs@lists.sourceforge.net; Wed, 07 Mar 2007 07:06:47 -0800 Received: from mail.gmx.net ([213.165.64.20]) by mail.sourceforge.net with smtp (Exim 4.44) id 1HOxj4-0005AL-NV for nfs@lists.sourceforge.net; Wed, 07 Mar 2007 07:06:49 -0800 In-Reply-To: List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net Hi again, just verified that the server indeed spins up all disks before answering the request. I thus suspect it is somehow checking all exports whenever any one export is mounted. Is this correct behaviour? Simon > The delay seems to be on the server side. What is the server running? > Does it have any nameservice issues? Delays on the first response can > often be due to server exports checking, which usually requires > reverse name lookups. > > Tom. > > At 05:23 AM 3/7/2007, Simon Peter wrote: > >Hi, > > > >I get a good 10 second delay anytime I am accessing my NFS mounts > >from a client for the first time (or after a long time not accessing > >them -- I suppose whenever the cache is cleared or something > >similar). > > > >I usually did not bother, even though it is very annoying, but this > >time I collected a network protocol capture, which is attached. > >Notice the big delay between packet #6 and #8, while #7 should show > >that it is not a network issue. > > > >I would be very glad if somebody could explain these delays. > > > >Thanks, > >Simon ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs