[jboss-jira] [JBoss JIRA] (JGRP-1765) TP: enable loopback by default and discard own multicasts

[Karim AMMOUS (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12933380#comment-12933380 ] 

Karim AMMOUS commented on JGRP-1765:
------------------------------------

Disable the loopback ensures as much as possible that the sender handles the message at the same time as the other receivers.
Otherwise, with loopback, there are more risks the sender processes the data much before the other members due to the network latency.

                
> TP: enable loopback by default and discard own multicasts
> ---------------------------------------------------------
>
>                 Key: JGRP-1765
>                 URL: https://issues.jboss.org/browse/JGRP-1765
>             Project: JGroups
>          Issue Type: Enhancement
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 3.5
>
>
> Enable {{TP.looback}} by default (deprecate and ignore prop): all messages sent by self are passed right to a thread pool to send them up again.
> When a multicast message sent by self is received, it is currently passed to a thread pool, de-serialized and only then discarded if loopback=true. This means that we create an unneeded buffer for de-serializationand perform de-serialization.
> SOLUTION: discard the multicast from self immediately when receiving it, in {{TP.receive()}}

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