Date: Tue, 9 Mar 1999 20:02:08 -0600 (CST) From: Richard Schulz <rschulz@Camarilla.RWSystems.net> To: James Wyatt <jwyatt@RWSystems.net> Cc: Dennis <dennis@etinc.com>, "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.LNX.4.03.9903091949140.5243-100000@Camarilla.camarilla.rwsystems.net> In-Reply-To: <Pine.BSF.4.05.9903091506410.710-100000@kasie.rwsystems.net>
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Actually, I'm using two 3c509b cards. Since I'm using a 486DX50 (true 50), it's faster doing memory I/O than the old DMA controller is at multiple DMA cycles. If I had PCI in the gateway I'd definately be using it. Oh, well. I might have to upgrade if I can ever find an IPSec solution that will work with the Bay Networks VPN harware. The NRL IPV6 patches do not work with 3.0.0-RELEASE. On Tue, 9 Mar 1999, James Wyatt wrote: > 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). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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