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From "Rob Lugt (JIRA)" <>
Subject [jira] Updated: (AMQ-999) Message dispatcher issues (use dedicated dispatching thread for each session)
Date Tue, 24 Oct 2006 10:43:02 GMT
     [ ]

Rob Lugt updated AMQ-999:

    Attachment: DispatchingThread.cs

New class: DispatchingThread.  This is a worker thread attached to a session, which has responsibility
for asynchronous dispatching of inbound messages to all consumers for the session.

> Message dispatcher issues (use dedicated dispatching thread for each session)
> -----------------------------------------------------------------------------
>                 Key: AMQ-999
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: NMS (C# client)
>    Affects Versions: 4.0.2
>         Environment: Windows
>            Reporter: Rob Lugt
>         Assigned To: Rob Lugt
>         Attachments: AtomicBoolean.cs, DispatchingThread.cs
> There are a number of issues with the dispatching of inbound messages.
> - A slow consumer will potentially use and block all ThreadPool threads
> - Use of a ThreadPool thread to dispatch a single message is inefficient due to context
> - No mechanism to suspend asynchronous delivery to a session (i.e. Connection.Stop()
is currently a no-op)
> - Retroactive consumer is currently broken because retoractive messages are delivered
before the listener delegate is assigned.
> - [minor] Application cannot predict which thread messages will be dispatched on
> All of these problems can simply be resolved by creating a dedicated dispatcher thread
for a session

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