From owner-freebsd-bugs  Mon Mar 20 14:50:27 2000
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Date: Mon, 20 Mar 2000 14:47:25 -0800 (PST)
From: rapid@flashcom.net
To: freebsd-gnats-submit@FreeBSD.org
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Subject: misc/17517: 100/10baseT card resets under load
Sender: owner-freebsd-bugs@FreeBSD.ORG
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>Number:         17517
>Category:       misc
>Synopsis:       100/10baseT card resets under load
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 20 14:50:02 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Roy Ritter
>Release:        4.0rc2
>Organization:
>Environment:
bash-2.03# uname -a
FreeBSD server.63-248-77-107.usa3.flashcom.net 4.0-20000214-CURRENT FreeBSD 4.0-20000214-CURRENT #0: Tue Feb 15 01:45:52 GMT 2000     root@monster.cdrom.com:/usr/src/sys/compile/GENERIC  i386

>Description:
Under heavy load my macronix based NIC card resets (lights go out on my
hub(actually a 5 port switch))  then come back on a few secons later and
the traffic continues.  This did not happen on the same machine using
FreeBSD 3.3 .   I am using the dc0 driver now for the NIC and under
FreeBSD 3.3 I used the mx0 driver.  I receive errors on the terminal
indicating tx underruns - I'm lucky to get 20kbs throughput
>How-To-Repeat:
transfer a file over 100k through the NIC
>Fix:
I wish I knew how to switch back to the mx0 driver!

>Release-Note:
>Audit-Trail:
>Unformatted:


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