*BSD News Article 77481


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From: c811052@bsdpc1.iii.org.tw (Chih-Cherng Chin)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: two LAN cards
Date: 4 Sep 1996 00:40:41 GMT
Organization: SEEDNET InterNetNews News System
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References: <Dx04Fn.B3o@racoon.riga.lv> <509tp6$8rf@uriah.heep.sax.de> <322BB8BB.CEF@OntheNet.com.au>
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Tony Griffiths (tonyg@OntheNet.com.au) wrote:
: On my machine-

: device ed0 at isa? port 0x340 net irq 10 iomem 0xd8000 vector edintr
: device ed1 at isa? port 0x300 net irq  5 iomem 0xd8000 vector edintr

If you've got performance problems, it may be due to your conflict
iomem setting.  I'm no expert about NE2000, but I think it works in
programmed I/O mode, not shared memory mode.  The presence of the iomem
keyword might indicate the use of a multiple packet buffer, when there's
a burst of incoming packets.  Thus the conflict iomem setting might
corrupts data, which results in retransmission.  You can modify your
iomem setting, see if that improve network performance.

Chih-Cherng Chin
elmo@iii.org.tw