From: jp@pour.midcoast.com Subject: Re: performance question Date: Tue, 1 Apr 2003 10:39:50 -0500 (EST) Sender: nfs-admin@lists.sourceforge.net Message-ID: <20030401153950.27556.qmail@pour.midcoast.com> References: <1049188686.19334.20.camel@deskpro02> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: nfs@lists.sourceforge.net Return-path: Received: from pour.midcoast.com ([206.26.226.21] ident=qmailr) by sc8-sf-list1.sourceforge.net with smtp (Exim 3.31-VA-mm2 #1 (Debian)) id 190NnJ-0000wf-00 for ; Tue, 01 Apr 2003 07:35:25 -0800 To: ukh@id.cbs.dk (=?ISO-8859-1?Q?K=E5re?= Hviid) In-Reply-To: <1049188686.19334.20.camel@deskpro02> from "=?ISO-8859-1?Q?K=E5re?= Hviid" at Apr 01, 2003 11:18:05 AM 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: Thanks to the several people for responses! > > Server (coffeepot) - Athlon XP2000, Suse 8.1, 2.4.21-pre6 kernel from > > kernel.org, boots to an ata100 drive, promise rm8000 external hardware=20 > > raid5 array on adaptec Adaptec AHA-2940U/UW/D controller, 3com 3c905C=20 > > forced to 100-FD with "/sbin/mii-tool -F 100baseTx-FD eth1". > > Fast question: Are you sure the _switch_ is setup to do > 100FD as well? In my experience, forcing FD on newer > cards and switches is something that must be done > carefully. Also, what about link flow control? I'm not > sure the 3c905c can be forced to do flow control by > simple means if your switch happens to support it. Try > the same using N-Way auto-negotiation and check what the > 3c905c thinks about it. Flow control on the switch is disabled - the default, I checked. It's also set for 100-FD, like my ethernet cards. I always hard-set ethernet settings because I don't trust autonegotiation under all circumstances. I installed iperf on both machines and there is not a problem sending large amounts of data between machines. coffeepot:~ # /usr/local/bin/iperf -s -u froth:/tmp/iperf-1.7.0 # /usr/local/bin/iperf -c 10.0.34.1 -b 100m WARNING: option -b implies udp testing ------------------------------------------------------------ Client connecting to 10.0.34.1, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 64.0 KByte (default) ------------------------------------------------------------ [ 5] local 10.0.34.2 port 32876 connected with 10.0.34.1 port 5001 [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 114 MBytes 95.6 Mbits/sec [ 5] Server Report: [ 5] 0.0-10.0 sec 114 MBytes 95.6 Mbits/sec 0.246 ms 0/81337 (0%) [ 5] Sent 81337 datagrams froth:/proc # /usr/local/bin/iperf -c 10.0.34.1 -b 90m WARNING: option -b implies udp testing ------------------------------------------------------------ Client connecting to 10.0.34.1, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 64.0 KByte (default) ------------------------------------------------------------ [ 5] local 10.0.34.2 port 32876 connected with 10.0.34.1 port 5001 [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 108 MBytes 90.5 Mbits/sec [ 5] Server Report: [ 5] 0.0-10.0 sec 108 MBytes 90.5 Mbits/sec 0.000 ms 0/76925 (0%) [ 5] Sent 76925 datagrams > > Cheers, > --=20 > K=E5re Hviid Sys Admin ukh@id.cbs.dk +45 3815 3075 > Institut for Datalingvistik, Handelsh=F8jskolen i K=F8benhavn > -- /* Jason Philbrook | Midcoast Internet Solutions - Internet Access, KB1IOJ | Hosting, and TCP-IP Networks for Midcoast Maine http://f64.nu/ | http://www.midcoast.com/ */ ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs