ifconfig Carrier problem, addendum

[Mike Heroux]

This seems to be a problem common to all system use of this interface.
Roughly speaking there is slightly less than one carrier event for every
transmit event.

One other experiment I tried since last posting:  I put in an old Xircom PC
card (10 Mbits).  This was recognized just fine and participates nicely as
a member of the cluster, although at a little slower transfer rate.

At 10:58 AM 7/17/99 -0400, Andy Welch wrote:
>Sorry Mike, I asked this question before.  I'm going to snap my 770 into
>the cluster on Monday if I get a chance, to see if it behaves
>strangely.  Have you experienced poor performance on "regular" 100Mb
>transmissions?
>
>
>Andy
>
>Mike Heroux wrote:
>> 
>> I got the latest version I found at the site
>> ftp://csb.stanford.edu/pub/pcmcia.  It is version 3.0.14.  I have installed
>> it and it is still behaving essentially the same.  lots of carrier errors
>> counted from ifconfig.  Any other ideas?  Thanks.
>> 
>> Mike
>> 
>> At 06:26 AM 7/17/99 +0800, you wrote:
>> >Have u tried to latest pcmcia package ?
>> >
>> >My 3C574-TX also have transmit problem but not on receive.
>> >
>> >The latest pcmcia package is believed to fix this.
>> >
>> >/ww
>> >
>> >On Fri, 16 Jul 1999, Mike Heroux wrote:
>> >
>> >> I also rebooted my laptop in Windows 98 and tested ftp on a large file.
>> >> The results are:
>> >>
>> >> Windows:     2.5 MB/sec
>> >>
>> >> Linux:       500 KB/sec
>> >>
>> >> This is through the same 3Com card, so the Linux performance problem
>> >> doesn't appear to be hardware related.
>> >> Michael A. Heroux, Ph.D.
>> >> Applied and Numerical Mathematics Department
>> >> Massively Parallel Computing Research Lab
>> >> Sandia National Laboratories
>> >> ph: 320-845-7695
>> >> fx: 320-845-7846
>> >> mheroux@cs.sandia.gov
>> >>
>> >
>> 
>>-----------------------------------------------------------------------------
>> >William Wong                                   Phone    : (852) 2883-7866
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>> >
>> 
>> Michael A. Heroux, Ph.D.
>> Applied and Numerical Mathematics Department
>> Massively Parallel Computing Research Lab
>> Sandia National Laboratories
>> ph: 320-845-7695
>> fx: 320-845-7846
>> mheroux@cs.sandia.gov

Michael A. Heroux, Ph.D.
Applied and Numerical Mathematics Department
Massively Parallel Computing Research Lab
Sandia National Laboratories
ph: 320-845-7695
fx: 320-845-7846
mheroux@cs.sandia.gov