Re: [Linux-decnet-user] RE: Help decnet/XFree Problem

[Patrick C. <pa...@ty...>]

On Fri, Jul 26, 2002 at 05:33:38PM +0200, BASSIR Mohcine wrote:
> 
>    Thank you Patrick,
> 
>    Your answer confirm that I 'm  not alone to get this problem and all my
>    configuration is correct.
> 
>    I don't know if that can help you, but I made some other tests, and I saw
>    that the link seems to be disconnected when the application on Alphaserver
>    is working a lot. Changing the speed on ethernet cards from 10 mbps to 100
>    mbps seems to break the link more quickly. I also tried to change the
>    dst_gc_interval and time_limit parameters with no success. (I don't
>    exactly know the use of these parameters and if other decnet parameters
>    can affect the communication ). I made also some change in the NSP
>    parameters of the Alphaserver but also without success (delay factor,
>    weight...). 
> 
>    It seems that a "time-out" occurs on the PC side, waiting for an answer
>    from the Alphaserver.
> 
>    Let me know if you want more information or tests.

I think I know what's happening but I'm not sure how to stop it.  The X server
has a SIGALRM timer that goes off every so often. If it's reading from the
DECnet socket when that happens DECnet, returns -ERESTARTSYS which the Xserver
interprets as an error and closes the socket.

I've tried changing this to -EINTR and it doesn't seem to make much of a
difference. Oddly, if I strace the Xserver running ico from a Unix box it never
seems to return -EINTR, only data and -EAGAIN. If you're feeling brave you might
like to change the ERESTARTSYS to an EAGAIN and see what happens ;-)


patrick