[jbossts-issues] [JBoss JIRA] (JBTM-2010) Scalability Enhancements for BlackTie

[Tom Jenkinson (JIRA)]

    [ https://issues.jboss.org/browse/JBTM-2010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930665#comment-12930665 ] 

Tom Jenkinson commented on JBTM-2010:
-------------------------------------

This may help: https://github.com/tomjenkinson/narayana/commits/JBTM-2010-nio
                
> Scalability Enhancements for BlackTie
> -------------------------------------
>
>                 Key: JBTM-2010
>                 URL: https://issues.jboss.org/browse/JBTM-2010
>             Project: JBoss Transaction Manager
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: BlackTie
>            Reporter: Tom Jenkinson
>            Assignee: Amos Feng
>             Fix For: 6.0.0.Final
>
>
> At the moment we are using traditional IO techniques which means there is a single thread and connection per service on the C++ side and a single thread per server per service on the WildFly side.
> For example:
> 10 servers with 10 services = 10 threads on the client side, 100 threads on the wildfly side
> We should look to use AIO on the Java side and apr pollset on the C++ side to reduce the number of threads. This will not reduce the physical number of connections but should allow the server to scale much higher.
> 1. use AIO for StompConnect, 
> 2. add a configurably sized connection polling pool to BlackTie C++,
> 3. use a common pool for servicedispatchers, so for example if 10 services with a size of 10 would normally mean 100 threads, we can say 10 services, size of 10, share 10 threads.

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