[jboss-jira] [JBoss JIRA] Commented: (JGRP-1085) NakReceiverWindow: possibly replace ReadWriteLock and other optimizations

[Bela Ban (JIRA)]

    [ https://jira.jboss.org/jira/browse/JGRP-1085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12492426#action_12492426 ] 

Bela Ban commented on JGRP-1085:
--------------------------------

Further optimization in NAKACK:
- When sending a message in down(), we always grab the NakReceiverWindow for local_addr
- A ref to the window can be cached, so we can eliminate the Map.get(local_addr) altogether

> NakReceiverWindow: possibly replace ReadWriteLock and other optimizations
> -------------------------------------------------------------------------
>
>                 Key: JGRP-1085
>                 URL: https://jira.jboss.org/jira/browse/JGRP-1085
>             Project: JGroups
>          Issue Type: Task
>            Reporter: Bela Ban
>            Priority: Minor
>             Fix For: 2.9
>
>
> Take a look at performance of RW locks, [1] suggests it is bad and writer threads get starved by many reader threads.
> [1] http://www.javaspecialists.eu/archive/Issue165.html

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