Thanks to:
George Guthlein
Dr. Tom Blinn
John Speno
The consensus is that the message is informational. The network card
driver decided to expand a buffer dynamically, and was kind enough to
let me know. Wouldn't it be nice if you knew what to worry about and
what to ignore.
Thanks again,
susrod_at_hbsi.com
Dr. Blinn's comment:
----------
From: Dr. Tom Blinn, 603-884-0646[SMTP:tpb_at_doctor.zk3.dec.com]
Sent: Tuesday, September 1, 1998 11:49 AM
To: Susan Rodriguez
Subject: Re: [Q] FIFO underflow message logged on cosole
> What is this really telling me? Is it just informational or do I have
a
> problem?
It's informational. The driver was written to figure out the sizes for
the
FIFO buffers "dynamically", that is, by experiment. The messages simply
mean the driver decided to expand the buffers.
One of these days (maybe in our lifetimes) we might document the
messages
that come out of the kernel, and put them all under some form of
control, so
that every message you (as system mangler) might see is explained, and
no
new messages get added just for developer convenience (to be able to be
sure
that the software is doing what it's supposed to be doing).
Tom
Dr. Thomas P. Blinn + UNIX Software Group + Compaq Computer Corporation
110 Spit Brook Road, MS ZKO3-2/U20 Nashua, New Hampshire 03062-2698
Technology Partnership Engineering Phone: (603) 884-0646
Internet: tpb_at_zk3.dec.com Digital's Easynet: alpha::tpb
ACM Member: tpblinn_at_acm.org PC_at_Home: tom_at_felines.mv.net
Worry kills more people than work because more people worry than work.
Keep your stick on the ice. -- Steve Smith ("Red Green")
My favorite palindrome is: Satan, oscillate my metallic sonatas.
-- Phil Agre, pagre_at_ucsd.edu
Yesterday it worked / Today it is not working / UNIX is like that
-- apologies to Margaret Segall
Opinions expressed herein are my own, and do not necessarily represent
those of my employer or anyone else, living or dead, real or imagined.
Original posting:
----------
From: Susan Rodriguez
Sent: Tuesday, September 1, 1998 10:38 AM
To: 'alpha-osf-managers_at_ornl.gov'
Subject: [Q] FIFO underflow message logged on cosole
I upgraded my network last weekend to support 100Mbit. I had 2
different servers running DE-500-BA cards selected at 10 Mbs. As part
of the upgrade, I set them to 100Mbit with half duplex. From what I
could find on the OSF list, that took 2 steps:
1 - at the console, set the ew* mode to fast
2 - add speed=100 to the ifconfig definition in /etc/rc.config
I did both and seem to be running all right. However, both servers have
logged the following in the messages file:
*****************************************************
TIM:
Sep 1 09:07:03 tim vmunix: tu0: transmit FIFO underflow: threshold
raised to: 256 bytes
Sep 1 09:26:36 tim vmunix: tu0: transmit FIFO underflow: threshold
raised to: 512 bytes
LANCELOT:
Aug 31 08:27:48 lancelot vmunix: tu1: transmit FIFO underflow: threshold
raised to: 256 bytes
***************************************************
What is this really telling me? Is it just informational or do I have a
problem?
TIA
susrod_at_hbsi.com
Received on Tue Sep 01 1998 - 20:34:15 NZST