Re: Linux

I've also seen related type of problems when the linux box is configured at
half duplex and the switch/hub is configured at full duplex. We use a lot of
Intel pro 100 hardware cards and  eepro100-utils-1.9-2.i386.rpm contains
utilities to display and set the network card mode.  You  may want to look at, it contains an impressive list of
diagnostic network tools for different types of networking cards.

Hope this helps.

Luis Cano

David Wojtowicz wrote:

> On Tue, 9 Jan 2001, Ted Jackson wrote:
> > A quickie, I hope.  It seems that Linux, RedHat at least, has a slow
> > throughput over the network when compared with, say, SGI.  I haven't been
> > able to find a good reason why or a solution.  For instance, throughput
> > over 100BaseT is only a little better than 10BaseT which is only a few
> > "K"/sec.
> >
> > Thanks for any suggestions.
> >
> > Ted Jackson  -  Sysadm, Code 912
> > SCi. Syst. & Apps,. Inc
> >
> You say the 10BaseT was only a few K/sec.  You should see 800K/sec or so
> for a 10BaseT connection (assuming of course you are going over a local
> connection to another fast machine).  Even on a lowly P90 running Linux I
> regularly see 1600 K/sec with 100BaseT.   So I don't think its a limitation
> of Linux.
> With the 10BaseT operating this slowly its likely a bad cable, network
> card or something.... which would also impact the performance of
> the 100BaseT.   If plugged into a managed hub or switch, check
> the statistics for bad packets, collisions, etc.  You might try
> another cable, network card, port on hub, etc.
> ------------------------------------------------------------
>  David Wojtowicz, Sr. Research Programmer / Systems Manager
>  Department of Atmospheric Sciences Computer Services
>  University of Illinois at Urbana-Champaign
>  email: davidw@xxxxxxxx  phone: (217)333-8390
> ------------------------------------------------------------