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Date:      Fri, 1 Nov 1996 14:48:55 -0500 (EST)
From:      "Kenneth J. Dupuis" <kdupuis@dcs.stu.rpi.edu>
To:        freebsd-current@freebsd.org
Subject:   3c590 problem
Message-ID:  <Pine.BSF.3.95.961101143817.2466A-100000@dcs.stu.rpi.edu>

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We're seeing really strange behavior on a very fast machine that looks
like it has something to do with the networking code.  Here's the
machine's specs followed by the problem: 

Intel Endeavor motherboard
Intel Pentium 100MHz CPU
512KB cache
32MB EDO RAM
1.0GB Fast SCSI-2 Seagate 51080N hard drive
Adaptec 2940U Ultra SCSI PCI controller card
3Com 3c590 10BaseT PCI ethernet card
FreeBSD 2.2-961014-SNAP

The machine is connected to 10BaseT which goes through an ethernet switch
to our 100Mbps FDDI campus backbone.  Sustained speeds of 400KB/sec to and
from the Internet to this machine are not uncommon for long periods of
time.

The problem is when someone does an FTP or some other form of a raw
transfer into or out of the machine, the networking code seems to hang.
The machine becomes "unpingable" and pings from the machine usually result
in a "no buffer space available" message.  The machine seems to work fine
with a standard 16-bit ISA 3c509 card.

We've also tried FreeBSD 2.1.5-RELEASE.

Any ideas?  We need the machine to run with a 3c590, due to the amount of
traffic that goes in and out of it.


TIA,

Kenneth J. Dupuis




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