Hi
I have seen a message about this problem a couple of days ago but
no answers nor summaries so I need to ask an already asked the question:
I have installed a Fast Ethernet card (DE500 - DECchip 21140-AA: Revision: 1.2)
on a 2100 4/275 and two 2000 4/200 systems (after a firmware update that comes
with the V3.2G kit) and then upgraded to DU 3.2G. All the 3 systems are
connected to a 3Com 100MHz OfficeConnect hub which in turn is connected to a
Fast ethernet switch to the rest of our LAN.
Each system sees the rest of the network and each other too.
I can copy data at a rate over 700KB/s to or from any system on our net from or
to any of these servers at any time. But... if I copy data between any of these
three servers, I get anything between 57KB/s (at midnight, very low traffic) up
to 130KB/s (best rate sofar). I was expecting several MB/s. I got a message on
the console about "silo buffer underflow, increasing to 256" that I remember
having read in this list a couple of days ago. So my question:
What is the secret to use a DE500 up to its speed? Should I step back
to an effectively much faster regular ethernet card? I am getting constant NFS
errors, for example, but no errors recorded in the error log.
Philippe
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PHILIPPE GOUFFON |
Instituto de Fisica | INASMUCH as three quarters of the earth's
Universidade de Sao Paulo | surface is water and only one fourth is land
Caixa Postal 66318 | the good Lord's Intentions are very clear:
05389-970 Sao Paulo |
Brazil | A man's time should be divided:
|
Tel: (55)(11)818-7045 | three fourths for sailing and one fourth for work.
Fax: (55)(11)818-6832 |
email: pgouffon_at_if.usp.br |
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Received on Tue May 27 1997 - 00:54:08 NZST