From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: Linux router performance (3c59x) (fwd) Date: Mon, 17 Mar 2003 20:48:08 -0800 Sender: netdev-bounce@oss.sgi.com Message-ID: <3E76A508.30007@candelatech.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@oss.sgi.com Return-path: To: ralph+d@istop.com In-Reply-To: Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Ralph Doncaster wrote: > I haven't heard from Jamal or Dave, so perhaps someone from this list has > some wisdom to impart. > Currently the box in question is running a 67% system load with ~40kpps. > Here's the switch port stats that the 2 3c905cx cards are plugged into: > > 5 minute input rate 36143000 bits/sec, 8914 packets/sec > 5 minute output rate 54338000 bits/sec, 10722 packets/sec > - > 5 minute input rate 50585000 bits/sec, 12445 packets/sec > 5 minute output rate 34326000 bits/sec, 9596 packets/sec When using larger packets, NAPI doesn't have much effect. Have you tried routing with simple routing tables to see if that speeds anything up? Could also try an e100 or Tulip NIC. Those usually work pretty good... Or, could use an e1000 GigE NIC... It's also possible that you are just reaching the limit of your system. Ben -- Ben Greear President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear