From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Alewijnse Subject: Re: gigabit trouble Date: Fri, 30 Jul 2004 00:41:03 +0200 Sender: netdev-bounce@oss.sgi.com Message-ID: References: <20040729210401.A32456@electric-eye.fr.zoreil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org Return-path: To: netdev@oss.sgi.com In-Reply-To: <20040729210401.A32456@electric-eye.fr.zoreil.com> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org I was going to do an exhaustive test, but because my computer stopped running completely, I'll reply to the one or two bits I can now. On Thu, 29 Jul 2004 21:04:01 +0200, Francois Romieu wrote: > Bart Alewijnse : > [...] > > I run gentoo on both, which until yesterday was 2.6.7-ck5 (on both), > > and currently run 2.6.7-mm6 (again, both), as I saw the suggestion > > somewhere it had better support for the card - something about a new > > net card inferface that's nicer to interrupts. > > NAPI support for r8169 is available in recent -mm kernel and there is > a small (though noticeable) optimization wrt to interrupt disabling. Well, I noticed a max of 6500 interrupts/s on eth1 on both computers, with or without napi - and that 6500 is also the figure of packets per second. So I'm slightly dubious. (notice 6500 *1500 bytes is about 10MB/s) > [...] > > So, question one - how do I see the link speed under linux, and how, > > if at all, do I control it? > > ethtool Thanks. That wasn't the problem - the line speed's a gbit. > [...] > > Disturbingly, in such a linux-to-linux speed test, my new computer > > froze.As in, in text mode, have the screen freeze and apparently be > > half written full of nonsense. > > These messages would be welcome (pen/paper/serial line/image/log file > or whatever). No messages, no oops, no log messages that I noticed. It was video memory corruption in text mode. As to the rest, I'll do it when I revive my computer. Right now, I'm thinking the power supply may be dodgy. I'll see if I can get a minimum to run off my even older 235Watt. But as a note, with two cards, two cdroms and a hard drive less, it was still making the noise. I think it still is now, but since no OS actually boots completely right now, I can't say for sure. I'll do a memtest, that makes sense. --Bart