Date: Tue, 9 Mar 1999 15:22:12 -0600 (CST) From: James Wyatt <jwyatt@RWSystems.net> To: Dennis <dennis@etinc.com> Cc: "Randy A. Katz" <randyk@ccsales.com>, =?iso-8859-1?Q?=22Ronald_Wiplinger_=28=C3Q=A4=AF=AF=C7=29=22?= <ronald@trace.net.tw>, "freebsd-isp@FreeBSD.ORG" <freebsd-isp@FreeBSD.ORG> Subject: Re: Ethernet card problem Message-ID: <Pine.BSF.4.05.9903091506410.710-100000@kasie.rwsystems.net> In-Reply-To: <199903091607.LAA25321@etinc.com>
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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
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