[jboss-jira] [JBoss JIRA] (JGRP-1662) Remove flow control and fragmentation if run on TCP transport

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790930#comment-12790930 ] 

Bela Ban commented on JGRP-1662:
--------------------------------

Changed thread pool config: a high queue size led to a high number of 70k messages getting queued, which was the reason for the OOMEs. Adjusted min_size to 4 and set the queue size to 1000. However, numbers went up to 79MB/sec/node, compared to 87MB/sec/node for the old config (+MFC +FRAG2).
                
> Remove flow control and fragmentation if run on TCP transport
> -------------------------------------------------------------
>
>                 Key: JGRP-1662
>                 URL: https://issues.jboss.org/browse/JGRP-1662
>             Project: JGroups
>          Issue Type: Enhancement
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 3.3.4, 3.4
>
>
> When run with a TCP transport, we don't need MFC and FRAG(2). However, if we remove FRAG2, the bundler at the transport will drop a message if it exceeds max_bundle_size.
> Let's therefore bypass message bundling when the transport is TCP (TCP has its own batching).
> TODO: measure how this change affects performance on a 4 node cluster. If positive, commit it.

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