Date: Wed, 10 Mar 1999 09:10:00 +0800 From: "Ronald Wiplinger (ÃQ¤¯¯Ç)" <ronald@trace.net.tw> To: James Wyatt <jwyatt@RWSystems.net> Cc: Dennis <dennis@etinc.com>, "Randy A. Katz" <randyk@ccsales.com>, "freebsd-isp@FreeBSD.ORG" <freebsd-isp@FreeBSD.ORG> Subject: Re: Ethernet card problem Message-ID: <36E5C668.C3626C9D@trace.net.tw> References: <Pine.BSF.4.05.9903091506410.710-100000@kasie.rwsystems.net>
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This is a multi-part message in MIME format. --------------F2E5D7E1E78AC5A76489CE76 Content-Type: text/plain; charset=big5 Content-Transfer-Encoding: 8bit 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@ It is a P-II 350 with 128MB RAM top gives me usually a load of 0.05 0.01 0.0 CPU 0.0 user 0.0 nice 0.1 system 0.6 interrupt 99.3 idle MEM 11M Active 26M Inact 15M Wired 8346k Buf 71M Free The computer should handle 4 x 64k lines (later 8, with ETINC cards) and a class-c of chat servers and www servers (server co-location), whereby now only 4 are filterd, three with a single IP and one group of 4 computers with 14 IP addresses. I believe the power of the computer is enough to handle this load, and it is a dedicated computer, which does not do other jobs. I am planning to change the Ethernet card now to an Intel Etherexpress 100, and later to two 4port Ethernet cards, so that the distribution to 7 x 16-port HUB, each handling two enclosures with 15 computers, makes a filtering of 105 computer possible. Maybe I will upgrade RAM, .... > > 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 ???? -- bye Ronald Wiplinger (ÃQ¤¯¯Ç) http://www.trace.net.tw (phone number = e-mail) e-mail: 0935869459@phonebook.com.tw or ronald@trace.net.tw --------------F2E5D7E1E78AC5A76489CE76 Content-Type: text/x-vcard; charset=big5; name="vcard.vcf" Content-Transfer-Encoding: 7bit Content-Description: Card for Ronald Wiplinger (ÃQ¤¯¯Ç) Content-Disposition: attachment; filename="vcard.vcf" begin: vcard fn: Ronald Wiplinger (ÃQ¤¯¯Ç) n: Wiplinger (ÃQ¤¯¯Ç);Ronald org: Wangs Trace Tech. Enterprise adr: No. 11, Lane 96, Section 1;;Wen Hua 2nd Road, Linkou Hsian;Taipei Hsien;;24442;Taiwan, R.o.C. email;internet: ronald@trace.net.tw title: Gen. Manager tel;work: (02) 26090652+10, (0935) 869459 tel;fax: +886 2 2600-0132 tel;home: +886 2 2609-0652+80 note: We run an ISP & ITSP in Taiwan. Call me via netmeeting (203.67.189.35) x-mozilla-cpt: ;0 x-mozilla-html: FALSE version: 2.1 end: vcard --------------F2E5D7E1E78AC5A76489CE76-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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