From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David S. Miller" Subject: Re: Route cache performance under stress Date: Tue, 10 Jun 2003 08:53:42 -0700 (PDT) Sender: netdev-bounce@oss.sgi.com Message-ID: <20030610.085342.41654796.davem@redhat.com> References: <20030609195652.E35696@shell.cyberus.ca> <20030609204257.L35799@shell.cyberus.ca> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: ralph+d@istop.com, xerox@foonet.net, sim@netnation.com, fw@deneb.enyo.de, netdev@oss.sgi.com, linux-net@vger.kernel.org Return-path: To: hadi@shell.cyberus.ca In-Reply-To: <20030609204257.L35799@shell.cyberus.ca> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org From: Jamal Hadi Date: Mon, 9 Jun 2003 21:15:18 -0400 (EDT) Have you tried a different NIC? Not sure how well the 3com is maintained for example. Acutally, the main issue with 3c59x is that it still uses PIO accesses. This basically makes it useless for routing or anything wanting serious latency. Andrew Morton knows this, but he is such a good maintainer that he doesn't want to change over the MEM I/O accesses for fear of breaking something. It's actually a simple change to make if someone wants to spend a few cycles on it, then you can see what kind of performance you'll get with that.