From owner-freebsd-hackers Tue Mar 11 22:44:41 2003 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 27F9A37B404 for ; Tue, 11 Mar 2003 22:44:40 -0800 (PST) Received: from cirb503493.alcatel.com.au (c18609.belrs1.nsw.optusnet.com.au [210.49.80.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9091343F3F for ; Tue, 11 Mar 2003 22:44:38 -0800 (PST) (envelope-from peterjeremy@optushome.com.au) Received: from cirb503493.alcatel.com.au (localhost.alcatel.com.au [127.0.0.1]) by cirb503493.alcatel.com.au (8.12.6/8.12.5) with ESMTP id h2C6iRiM006464; Wed, 12 Mar 2003 17:44:27 +1100 (EST) (envelope-from jeremyp@cirb503493.alcatel.com.au) Received: (from jeremyp@localhost) by cirb503493.alcatel.com.au (8.12.6/8.12.5/Submit) id h2C6iPrI006463; Wed, 12 Mar 2003 17:44:25 +1100 (EST) Date: Wed, 12 Mar 2003 17:44:25 +1100 From: Peter Jeremy To: Doug Ambrisko Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Realtek Message-ID: <20030312064424.GB6336@cirb503493.alcatel.com.au> References: <200303102102.33694.wes@softweyr.com> <200303111920.h2BJKaEC013582@www.ambrisko.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200303111920.h2BJKaEC013582@www.ambrisko.com> User-Agent: Mutt/1.4i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, Mar 11, 2003 at 11:20:36AM -0800, Doug Ambrisko wrote: >Wes Peters writes: >| Flood it with wire speed 64-byte packets and drive it into receive >| interrupt livelock. Yup, the PCI bus is (most of) the problem here too. > >Can't reproduce it. Maybe they fixed it in the 8100L rev.? > >I tried a ping -f -s 22 to hit it with 64 byte packets. I also had >traffic going to the onboard gig and it wasn't impacted (granted the >source was a 100bit link tied to the gig link). Are you sure you were generating "wire speed" packets - this is about 200,000 packets/sec at Fast speed. "ping -f" runs at whatever rate the remote end returns the packets at (or 100pps) - since it (mostly) waits for a response before sending another packet, you will never see livelock. In order to get 200,000 pps, you're going to need 5-10 hosts generating traffic, each with a good NIC and connected to the test system via a decent switch. You also need a proper network benchmarking tool - netperf (ports/netperf) or similar rather than ping. Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message