[Tinyos-help] Question

[Aaron Ault]

I've had problems like that when the task queue overflows.  The default
size is 8, you might want to increase it to 32 or so.

Aaron

On Mon, 2006-07-31 at 13:38 -0400, svilen at seas.upenn.edu wrote:
> 
> Hello,
> 
> I have a question regarding a message transmission problem that I encounter. I
> run a TinyOS application with 200 nodes, with the following configuration file:
> 
> configuration test_filter {
> }
> implementation {
>   components Main, test_filterM, SingleTimer, LedsC, PotC, GenericComm as Comm,
> RandomLFSR;
>    
>   Main.StdControl -> SingleTimer.StdControl;
>   Main.StdControl -> test_filterM.StdControl;
>   
>   test_filterM.Timer -> SingleTimer.Timer;
>   test_filterM.Leds -> LedsC;
>   test_filterM.CommControl -> Comm;
>   test_filterM.SendMsg -> Comm.SendMsg[1];
>   test_filterM.ReceiveMsg -> Comm.ReceiveMsg[1];
>   test_filterM.Random -> RandomLFSR;
> }
> 
> A am building a routing tree over those nodes, using a sparse bit error graph
> (about 10 neighbors have 0 bit-errors, and the rest have 0.5) and the problem is
> that after multiple message broadcasts, well into the process, I encounter a
> case where a node repeatedly transmits a message (using call SendMsg.send) and
> its intended recipient does not register it (using event ReceiveMsg.receive).
> There are no other nodes that transmit at this time, just node A which tries to
> send a message to node B, which is targeted specifically to B (not a broadcast).
> The bit error between them is 0, and yet node B does not register the message. B
> has previously received messages from A before the current attempt on A's
> behalf. Source code and status logs can be provided on request.
> 
> Why does this situation arise? Is it possible that there is some kind of
> overflow of internal message queues? Is it because of the methods use to send
> and receive? Can you suggest an alternative?
> 
> Svilen Mihaylov
> 
> 
> 
> ----- End forwarded message -----
> 
> 
> _______________________________________________
> Tinyos-help mailing list
> Tinyos-help at Millennium.Berkeley.EDU
> https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help