the repetation behaviour stops in spade.behaviour.behaviour after a period

[wei77...@gmail.com]

Hi,

I am trying to set up a multi-agent system. this system contains over 20 agents and each agent has 13 bahaviours. most of them are cycle behaviours. 

the problem is: after I start all of the agent for a while, some of the behaviours in some agents will stop running. the code is shown below.

class MyAgent(spade.Agent.Agent):

    def __init__(self, agentid, n):

        .......  #(some defination)

    class Receive(spade.Behaviour.Behaviour):

        # this behaviour is in charge of waiting for messages   

        def __init__(self, b):

            self.b = b

            self.c = [1,0,0]

            self.msg = [1,0,0]

            spade.Behaviour.Behaviour.__init__(self)

            self.e1 = 0

        

        def onStart(self):

            print "listening for client"

           

        def _process(self):                 

            self.msg = self._receive(True, 0.4)

            n = self.b.n                        

            if self.msg:                

                print "%d got a message" %(n)

                self.c = self.msg.getContent()

            else:

                print "I waited but got no message"

            self.e1 = self.e1 +1 

        def onEnd(self):

            print "server closed"

    class behaviour2(spade.Behaviour.PeriodicBehaviour):  

        ........

    class behaviour13(spade.Behaviour.PeriodicBehaviour):

        ........

    def _setup(self):

        self.thr_Send = self.Send(self)

        self.behaviour_2 = self.behaviour2(self)

        .........

        self.behaviour_13 = self.behaviour13(self)

    def tearDown(self):

        self.stop()

if __name__ == "__main__":

    num_MG = 28

    A = {"version": 1}

    

    for i in range(num_MG):

        n = "agent" + str(i+1) +"@127.0.0.1"

        A[str(i)] = MyAgent(n,(i+1))   

        A[str(i)].start()

    time.sleep(576) 

    for i in range(num_MG):            

        A[str(i)].tearDown() 

I have checked the code and there is no error. after all the 28 agents runs for a while, for example, 5 minutes, the Receive behaviour stops in some agents

after the code runs the tearDown(), I made an array to record the variation of self.e1 in the Receive behaviour every 0.4 seconds. it shows like bellow:

[0, 1, 2, 3, ......, 34,34, 34,.....34]  it means the cycle behaviour stops after self.e1 = 34. 

I don't know why this happens and how to solve problem like this . could anyone help me with this? thans

Jin Wei