[jboss-jira] [JBoss JIRA] Updated: (JBMESSAGING-629) Unneccessary puts in message store

[Tim Fox (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBMESSAGING-629?page=all ]

Tim Fox updated JBMESSAGING-629:
--------------------------------

        Summary: Unneccessary puts in message store  (was: Unneccessary puts and gets in message store)
    Description: 
We are currently executing unnecessary puts into the message store on the primary execution path of message routing.

When a new message arrives - it is first added to the message store. The message is only ever retrieved from the message store if a reference is loaded from paging and we want to make sure we do not have more than once instance in memory at once.

The first put is therefore unnecessary and will have some performance implications. Also message store is currently a synchronization bottleneck so this should aid concurrency. Messages should only be added to the message store (if necessary) when they are paged to storage



  was:
We are currently executing unnecessary puts into the message store on the primary execution path of message routing.

When a new message arrives - it is first added to the message store. The message is only ever retrieved from the message store if a reference is loaded from paging and we want to make sure we do not have more than once instance in memory at once.

The first put is therefore unnecessary and will have some performance implications. Messages should only be added to the message store (if necessary) when they are paged to storage




> Unneccessary puts in message store
> ----------------------------------
>
>                 Key: JBMESSAGING-629
>                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-629
>             Project: JBoss Messaging
>          Issue Type: Task
>    Affects Versions: 1.0.1.GA, 1.2.0.Alpha1
>            Reporter: Tim Fox
>         Assigned To: Tim Fox
>             Fix For: 1.2.0.Beta1
>
>
> We are currently executing unnecessary puts into the message store on the primary execution path of message routing.
> When a new message arrives - it is first added to the message store. The message is only ever retrieved from the message store if a reference is loaded from paging and we want to make sure we do not have more than once instance in memory at once.
> The first put is therefore unnecessary and will have some performance implications. Also message store is currently a synchronization bottleneck so this should aid concurrency. Messages should only be added to the message store (if necessary) when they are paged to storage

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