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Subject: Re: strange ioc hangup
From: Andrew Johnson <anj@aps.anl.gov>
To: tech-talk@aps.anl.gov
Date: Wed, 23 Jun 2010 09:53:55 -0500
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).

- Andrew
-- 
The best FOSS code is written to be read by other humans -- Harald Welte


Replies:
Re: strange ioc hangup Benjamin Franksen
References:
strange ioc hangup Benjamin Franksen

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