From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ralph Doncaster Subject: Re: Route cache performance under stress Date: Tue, 10 Jun 2003 13:19:41 -0400 (EDT) Sender: linux-net-owner@vger.kernel.org Message-ID: References: <20030609195652.E35696@shell.cyberus.ca> <20030610015311.GB23009@netnation.com> <20030610.085600.71109220.davem@redhat.com> Reply-To: ralph+d@istop.com Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: "sim@netnation.com" , "hadi@shell.cyberus.ca" , "xerox@foonet.net" , "fw@deneb.enyo.de" , "netdev@oss.sgi.com" , "linux-net@vger.kernel.org" Return-path: To: "David S. Miller" In-Reply-To: <20030610.085600.71109220.davem@redhat.com> List-Id: netdev.vger.kernel.org On Tue, 10 Jun 2003, David S. Miller wrote: > From: Simon Kirby > Date: Mon, 9 Jun 2003 18:53:12 -0700 > > Your CPU use is quite a bit higher than ours. > > Yeah, but his faster cpu is all being burnt to a crisp > doing PIO accesses to the 3c59x card. > > I found that once NAPI was happening, userspace seemed to get a > fairly decent amount of time. > > Unfortunately, NAPI won't help him with the current way the 3c59x > driver works. It needs to provide a way to use MEM I/O before NAPI > would start to be of use to him. Well, I've already decided to retire the 3c905cx cards and drop in a couple of the Pro/1000 cards I recently bought. Considering the Intel GigE cards cost me ~$50 now and the 3Coms are ~$45, I'd say anyone willing to update 3c59x.c has misplaced priorities or too much time on their hands... -Ralph