[jbossts-issues] [JBoss JIRA] Created: (JBTM-420) add in-memory (i.e. Volatile) ObjectStore impl.

Jonathan Halliday (JIRA) jira-events at lists.jboss.org
Thu Oct 23 09:57:20 EDT 2008

add in-memory (i.e. Volatile) ObjectStore impl.

                 Key: JBTM-420
                 URL: https://jira.jboss.org/jira/browse/JBTM-420
             Project: JBoss Transaction Manager
          Issue Type: Feature Request
      Security Level: Public (Everyone can see)
          Components: Testing, Transaction Core
    Affects Versions: 4.4.0.GA
            Reporter: Jonathan Halliday
            Assignee: Jonathan Halliday
             Fix For: 4.5

For performance testing purposes it would be nice to have a pure in-memory objectstore implementation. This would store object states in the JVM's RAM and thus facilitate comparisons:

- comparing driving XAResources directly from the application code vs. via JBossTS would give the overhead of the transaction manager code without any i/o overhead i.e. tell us how performant the transaction manager's 'business logic' is and what the maximum theoretical throughput is if the persistent storage is not a bottleneck. Could also be useful when stress testing or profiling the rest of the transaction manager code.

- comparing against any other ObjectStore provides figures that show exactly what performance impact that store has i.e. it provides a baseline for evaluating other stores. Previously it's only been possible to compare any given store impl against driving XA resources directly, which does not account for the overhead of the transaction manager code.

Naturally there's no crash recovery support, so it's totally unsuitable for production usage.

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