[richfaces-issues] [JBoss JIRA] Commented: (RF-11156) a4j:push Performance problem in CDI sample of push in showcase

[Juraj Huska (JIRA)]

    [ https://issues.jboss.org/browse/RF-11156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621645#comment-12621645 ] 

Juraj Huska commented on RF-11156:
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Some performance tips I have found:

- Start the consumer before you start the producer so that the initial messages do not need to queue.
- Use a ConnectionConsumer to process messages concurrently with a ServerSessionPool.
- Close resources (e.g. connections, session objects, producers, consumers) when finished with them.
- DUPS_OK_ACKNOWLEDGE and AUTO_ACKNOWLEDGE perform better than CLIENT_ACKNOWLEDGE.
- Use separate transactional sessions and non-transactional sessions for transactional and non-transactional messages.
- Tune the Destination parameters: a smaller capacity increases message throughput; a higher redelivery delay and lower redelivery limit reduces the overhead.
- Choose non-durable (NON_PERSISTENT) messages wherever appropriate to avoid the persistency overhead.
- Set the TimeToLive value as low as feasible (default is for messages to never expire).
- Receive messages asynchronously with a MessageListener implementation.
- Choose the message type that minimizes memory overheads.
- Use 'transient' variables to reduce serialization overheads.

> a4j:push Performance problem in CDI sample of push in showcase
> --------------------------------------------------------------
>
>                 Key: RF-11156
>                 URL: https://issues.jboss.org/browse/RF-11156
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: examples
>    Affects Versions: 4.1.0.Milestone1
>         Environment: richfaces-showcase 4.1.0-Snapshot, containers - JBoss AS 6 and 7
>            Reporter: Juraj Huska
>            Assignee: Juraj Huska
>             Fix For: 4.1.0.Milestone2
>
>
> When there is more than 5 consumers windows, it causes performance problems(take up to 20 seconds to render message on consumer), at least from the beginning, after some messsages like 3-4 the performance is improved on AS 7.

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