From owner-freebsd-isp Tue Mar 9 13:46:57 1999 Delivered-To: freebsd-isp@freebsd.org Received: from host07.rwsystems.net (kasie.rwsystems.net [209.197.192.103]) by hub.freebsd.org (Postfix) with ESMTP id 1714B14F8B for ; Tue, 9 Mar 1999 13:46:27 -0800 (PST) (envelope-from jwyatt@RWSystems.net) Received: from kasie.rwsystems.net([209.197.192.103]) (2615 bytes) by host07.rwsystems.net via sendmail with P:esmtp/R:bind_hosts/T:inet_zone_bind_smtp (sender: ) id for ; Tue, 9 Mar 1999 15:22:32 -0600 (CST) (Smail-3.2.0.104 1998-Nov-20 #1 built 1998-Dec-24) Date: Tue, 9 Mar 1999 15:22:12 -0600 (CST) From: James Wyatt To: Dennis Cc: "Randy A. Katz" , =?iso-8859-1?Q?=22Ronald_Wiplinger_=28=C3Q=A4=AF=AF=C7=29=22?= , "freebsd-isp@FreeBSD.ORG" Subject: Re: Ethernet card problem In-Reply-To: <199903091607.LAA25321@etinc.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Uh, IIRC, the de0 (which I'm using) and the fxp0 (which I think Richard Schulz is using) are both PCI cards. Might I speculate that the CPU and/or FreeBSD kernel could be too busy filtering to get back to the card fast enough? How strong is the CPU and how much traffic is flowing? fwiw: I have also seen PCI bus-mastering faults in older MB chipsets. - Jy@ btw: I *really* appreciate the availability of this filter! Thanks!! On Tue, 9 Mar 1999, Dennis wrote: > The problem that Ronald is seeing is not related to the BWMGR, but to > a DMA problem on the card. "transmit underruns" (or underflows for it thats > what the driver author called it") are typically caused when the controller > cant get data fast enough (typically bus masters not able to get the bus in > time to fill the next data slot in a frame that is in the process of being > transmitted). > > Im not sure what card ronald is using, but if it is an isa bus-master card > you may just be overloading the bus. PCI should solve the problem On Mon, 8 Mar 1999, Ronald Wiplinger wrote: > It seems that I get a problem with my Ethernet card. I get following > message on the screen: > > de0: abnormal interrupt: transmit underflow (raising X threshold to 96|256) > de0: abnormal interrupt: transmit underflow (raising X threshold to 128|512) > de0: abnormal interrupt: transmit underflow (raising X threshold to 160|1024) > > What does it mean, and how can I solve it? > > This error comes up, since I have installed the bandwidth filter of > ETINC. The system crashs frequently after 2 hours of operation. I > believe it is related to the above message. > > Suppose I have to change this Ethernet card (D-link) to a Intel Ethernet > Express 100. How can I have two fxp* cards in one machine and still know > which one is for which gateway ???? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message