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<== Date ==> <== Thread ==>

Subject: Re: strange ioc hangup
From: Benjamin Franksen <benjamin.franksen@bessy.de>
To: tech-talk@aps.anl.gov
Date: Fri, 25 Jun 2010 13:34:58 +0200
On Wednesday 23 June 2010, Andrew Johnson wrote:
> Hi Ben,
> 
> On Wednesday 23 June 2010 08:19:44 Benjamin Franksen wrote:
> > The question is: what does the CA server do after it outputs these
> > error messages? Could it be it does something to the socket that makes
> > vxWorks throw up hands and strike? Also, note the 10 second delay
> > between the CAS message and the vxWorks message.
> 
> I agree with Larry,the "ei0: reset" message comes from the ei82596End
>  driver for the network chip, and is printed when its internal watchdog
>  timer goes off implying that the transmitter has locked up (according to
>  the comments in the source code, target/src/drv/end/ei82596End.c if you
>  have it).  I have certainly known this to happen if the network gets too
>  busy for the OS to handle all of the packets, which seems possible in
>  your circumstances.
> 
> I'm not sure there's much you can do about it, other than try to enhance
>  the ei driver to improve the recovery code (if you have the source
>  code).

Hm, in our sources under target/src/drv/end I find no ei82596End.c, only 
ln7990End.c. It says "END style AMD 7990 LANCE Ethernet network interface 
driver" in the header comment. Is this where I should look?

Cheers
Ben

References:
strange ioc hangup Benjamin Franksen
Re: strange ioc hangup Andrew Johnson

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