From: Olaf Kirch Subject: Re: knfsd brought to its knees, by a simple rsync or cp operation Date: Tue, 1 Mar 2005 15:37:32 +0100 Message-ID: <20050301143732.GA22324@suse.de> References: <20050226082854.2a496ec3@be.back.l8r.net> <20050228100633.GA4822@suse.de> <20050228102307.3788a184@be.back.l8r.net> <20050228154455.GS4822@suse.de> <20050228112018.34fdeb2b@be.back.l8r.net> <20050301095548.GJ14402@suse.de> <20050301065703.7e52cf4e@be.back.l8r.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: nfs@lists.sourceforge.net Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1D68VM-0003Su-3F for nfs@lists.sourceforge.net; Tue, 01 Mar 2005 06:37:44 -0800 Received: from ns.suse.de ([195.135.220.2] helo=Cantor.suse.de) by sc8-sf-mx2.sourceforge.net with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.41) id 1D68VK-0001xj-2D for nfs@lists.sourceforge.net; Tue, 01 Mar 2005 06:37:43 -0800 To: Brad Barnett In-Reply-To: <20050301065703.7e52cf4e@be.back.l8r.net> 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: On Tue, Mar 01, 2005 at 06:57:03AM -0500, Brad Barnett wrote: > Within 10 seconds, the output of ls -R /home slows. Within 20 seconds, it > _stop_. It then sits there for seconds, and spews out a page in small > jumps. Again, a ls /raid/home on the _server_ barely slows, and is > constant. > > I'm really scratching my head here. Well, it sounds like something's eating the network bandwidth, or otherwise interfering with nfsd responsiveness. Again, are you using UDP or TCP? If UDP, look at nfsstat output to see if you have a high retransmit count. If it's really a problem with scheduling, it should make a difference if you run the rsync job with lower priority, and/or renice the nfsd threads to run with higher priority. Olaf -- Olaf Kirch | --- o --- Nous sommes du soleil we love when we play okir@suse.de | / | \ sol.dhoop.naytheet.ah kin.ir.samse.qurax ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs