From: "Eff Norwood" Subject: RE: huge number of intr/s on large nfs server Date: Tue, 15 Oct 2002 19:54:08 -0700 Sender: nfs-admin@lists.sourceforge.net Message-ID: References: <5CA6F03EF05E0046AC5594562398B9160C773E@poexmb3.conoco.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Return-path: Received: from cynaptic.com ([128.121.116.181]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 181eK6-0005QO-00 for ; Tue, 15 Oct 2002 19:54:14 -0700 To: "Heflin, Roger A." , In-Reply-To: <5CA6F03EF05E0046AC5594562398B9160C773E@poexmb3.conoco.net> 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: Hi Roger, > if you are dd a 10mb file on the local machine that is all > going to be in cache, so > the rate will be horribly incorrect. Didn't do that - did a 10mb DD from 30 simultaneous network clients. I also tried 30 simultaneous local processes of 5GB dd each and got *much* better local disk performance than NFS performance once again. > Also these are gigabit copper cards correct? Gigabit > copper cards only run > a max of 50MB/second, so getting 35MB/second over one of > them is pretty good. They are copper - Syskonnect. Where did you get the idea that they only do 50MB/sec from? If they're gigabit, I expect them to be able to do 250MB/sec full duplex. > I am getting 1500cs/second and 6500ints/second at about > 8MB/second to > the network. > > I get 3600cs/second and 15000ints/second at about 20MB/second to the > network. > > How fast of IO are you getting on the local machine? If I do a large single DD, I see 140MB/sec local write. If I do multiple local dd's, I see 105MB/sec write. I didn't measure the intr/s yet but will do. Eff ------------------------------------------------------- This sf.net email is sponsored by: viaVerio will pay you up to $1,000 for every account that you consolidate with us. http://ad.doubleclick.net/clk;4749864;7604308;v? http://www.viaverio.com/consolidator/osdn.cfm _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs