From: "Heflin, Roger A." Subject: RE: huge number of intr/s on large nfs server Date: Tue, 15 Oct 2002 16:40:43 -0500 Sender: nfs-admin@lists.sourceforge.net Message-ID: <5CA6F03EF05E0046AC5594562398B9160C773F@poexmb3.conoco.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Return-path: Received: from usamail1.conoco.com ([12.31.208.226]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 181ZQk-00024p-00 for ; Tue, 15 Oct 2002 14:40:46 -0700 To: "Eric Whiting" 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: After doing some reading I figured out my mistake. Others had told me that it ran 4 pairs at 125Mhz each, and that it=20 worked just like 100BT (1 bit per clock cycle), apparently they are sending 2bit per cycle so 2 bits x 125Mhz * 4 channels is=20 1Gbps, if they were only using 1 bit per cycle it would be only 50MB/second. What is your underlying setup to get the 93MB/second, ie disks/controllers/cpus? Roger > -----Original Message----- > From: Eric Whiting [SMTP:ewhiting@amis.com] > Sent: Tuesday, October 15, 2002 3:52 PM > To: Heflin, Roger A. > Cc: nfs@lists.sourceforge.net > Subject: Re: [NFS] huge number of intr/s on large nfs server >=20 > I'm running 93MBytes/s on gigE copper (testing using a 1000M file). > (jumbo frames enabled) >=20 > eric >=20 >=20 >=20 > "Heflin, Roger A." wrote: > >=20 > > Something else, > >=20 > > 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. > >=20 > > 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. > >=20 > > I am getting 1500cs/second and 6500ints/second at about = 8MB/second to > > the network. > >=20 > > I get 3600cs/second and 15000ints/second at about = 20MB/second to the > > network. > >=20 > > How fast of IO are you getting on the local machine? > >=20 > > Roger > >=20 > > ------------------------------------------------------- > > This sf.net email is sponsored by:ThinkGeek > > Welcome to geek heaven. > > http://thinkgeek.com/sf > > _______________________________________________ > > NFS maillist - NFS@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/nfs ------------------------------------------------------- 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