system hard-hangs w/ dual 400MHz & epic100

[Steve Johnson]

I've been having some problems with a system hard hanging whenever it gets
a moderate amount of network traffic.  The system is used for simultaneous
X sessions from NCD X terminals, and can often see over 30 such users.
The users have their home directories mounted via NFS from a Sun running
Solaris.  Once we get to ~ 20 users, chances are pretty good that the
system is going to lockup and require a hard reset ==> 20 really upset
users.

Here are the specifics on our configuration:

Motherboard: Tyan Tiger 100 w/ 1.12 BIOS
Processor: dual 400MHz P-II
Memory: 512MB ECC SDRAM
Network: SMC EtherPower II connected to Xylan 10/100 switch
OS: 2.0.35
driver: epic100.c v1.04

I'm about at my wits end with this thing.  If it's not hard-hanging, its
getting Tx timeouts.  It will run for about 3-4 hours, max. 

Anyone have some ideas or similar experiences?

- Steve

--
//                 Steve Johnson, Systems Administrator
// Dept of Mathematics, Texas A&M University, College Station, TX 77843
//   http://www.math.tamu.edu/~Steve.Johnson/    Phone: (409)845-4267


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