[jboss-jira] [JBoss JIRA] (JGRP-2140) Replace Table with RingBuffer in UNICAST3 and NAKACK2

[Bela Ban (JIRA)]

     [ https://issues.jboss.org/browse/JGRP-2140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban updated JGRP-2140:
---------------------------
    Fix Version/s: 4.x
                       (was: 4.1)


> Replace Table with RingBuffer in UNICAST3 and NAKACK2
> -----------------------------------------------------
>
>                 Key: JGRP-2140
>                 URL: https://issues.jboss.org/browse/JGRP-2140
>             Project: JGroups
>          Issue Type: Enhancement
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 4.x
>
>
> Table does allocate memory on resizing or compaction; whereas RingBuffer doesn't. Replacing Table with RingBuffer might bring memory allocation rates even further down.
> However, using RingBuffer as message store means that the capacity is fixed; when the RingBuffer is full, messages would get dropped. This should not be a big issue as they will get retransmitted anyway, and flow control should actually kick in to throttle senders (this is done now, to prevent Table from growing out of bounds).
> Measure the impact on performance. Table is a critical class used by NAKACK2 and UNICAST3, and is battle tested. Do this only if the benefits trump the risk.



--
This message was sent by Atlassian JIRA
(v7.2.3#72005)