performance problems using SMC9432 on an Asus PVI486SP3

Donald Becker
Wed Aug 12 18:30:08 1998

On Thu, 13 Aug 1998, Alexander List wrote:

> we have performance problems here using SMC 9432 cards with the latest
> epic100.c:v1.03 8/7/98. The version of the driver that ships with 2.0.35
> didn't work at all. We are using Kernel 2.0.35, have a 3com Superstack
> II Switch 3300 and 3com 3c595TX cards on the "other end". Hardware is an
> ASUS PVI486SP3 with 64M RAM, 1GB HDD, Jazz G-Force 128 video card.
> FTP transfers from the 3com-based Linux machines reached as much as
> 17854464 bytes received in 18.3 secs (9.5e+02 Kbytes/sec)
> or even more.
> Transfers from the 9432 based machine to one of the 3com base machines
> reaches 2.2e+02 Kbytes/sec at max.

Is this likely to be a half/full duplex mismatch problem?
Check /proc/net/dev to see what kind of errors you are getting.

Donald Becker
USRA-CESDIS, Center of Excellence in Space Data and Information Sciences.
Code 930.5, Goddard Space Flight Center,  Greenbelt, MD.  20771

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