[eepro100] [some questions: overrun and throughput]

Donald Becker becker@scyld.com
Mon Nov 4 13:00:08 2002

On Mon, 4 Nov 2002, Matt K. Jeon wrote:

> Environment:
>     Kernel version: RedHat 7.3 / kernel version 2.4.18-3
>     NIC: PCI8134(bypass enabled NIC from ADLink) which uses two 82559 chip
>     Driver: eepro100 v1.25 8/27/2002 from your web(http://www.scyld.com/)
>     Linux bridge

Hmmm, I suspect that bridge code is related to this problem.

> After install your driver, it worked fine a few hours.
> But after that time system showed me some curious messages,

Where there any kernel messages?

> [root@mattlin netdrivers]# netstat -i -v

What does 'cat /proc/net/dev' report?  The error summary from netstat is
pretty much useless for tracking down problems.

> others are fine but TX-OVR (overrun at ifconfig) was showed, and some
> packets were droped continuously. 

I suspect a problem with CRC copying and the bridge code.

> I think eepro100 driver may got some bugs in ring buffer
> size(currently 32 in codes)... 

No, that's very unlikely as a problem source.

Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Scyld Beowulf cluster system
Annapolis MD 21403			410-990-9993