From owner-freebsd-isp Tue Mar 9 19:16:33 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 4916415065 for ; Tue, 9 Mar 1999 19:16:25 -0800 (PST) (envelope-from Camarilla!Camarilla.RWSystems.net!rschulz@host07.rwsystems.net) Received: from Camarilla (2305 bytes) by host07.rwsystems.net via rmail with P:uucp/R:bind_hosts/T:inet_zone_bind_smtp (sender: ) id for FreeBSD.ORG!freebsd-isp; Tue, 9 Mar 1999 21:06:44 -0600 (CST) (Smail-3.2.0.104 1998-Nov-20 #1 built 1998-Dec-24) Received: from localhost by Camarilla.rwsystems.net with smtp (Smail3.1.29.1 #3) id m10KYK0-0004oOC; Tue, 9 Mar 99 20:02 CST Date: Tue, 9 Mar 1999 20:02:08 -0600 (CST) From: Richard Schulz To: James Wyatt Cc: Dennis , "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: 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 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