Re: Linux

• To: Ted Jackson <tjackson@xxxxxxxxxxxxxxxxxxx>
• Subject: Re: Linux
• From: David Wojtowicz <davidw@xxxxxxxxxxxxxxxxxxxxx>
• Date: Tue, 9 Jan 2001 13:05:36 -0600 (CST)

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
------------------------------------------------------------

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