[jboss-jira] [JBoss JIRA] (JGRP-2146) UDP: multiple unicast and multicast receiver threads

[Bela Ban (JIRA)]

Bela Ban created JGRP-2146:
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             Summary: UDP: multiple unicast and multicast receiver threads
                 Key: JGRP-2146
                 URL: https://issues.jboss.org/browse/JGRP-2146
             Project: JGroups
          Issue Type: Enhancement
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 4.0


By default UDP has one thread which reads from the DatagramSocket for unicast datagram packets and another one for reading packets from the MulticastSocket.

Because each thread deserializes the received packet into a {{Message}} or {{MessageBatch}}, if a lot of packets are received, this may slow things down.

The new attributes {{ucast_receiver_threads}} (default:1) and {{mcast_receiver_threads}} (default:1) in UDP can create multiple unicast- or multicast- receiver threads. Note that all threads of the same type compete for the lock on the DatagramSocket or MulticastSocket respectively, so setting these attributes to high values is probably detrimental as context switching will increase.



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