[Jpox-issues] [JPOX JIRA] Resolved: (CORE-3243) Scalability problem

[Andy J. (JIRA) <web...@jp...>]

     [ http://www.jpox.org/servlet/jira/browse/CORE-3243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Jefferson resolved CORE-3243.
----------------------------------

    Resolution: Won't Fix

Not traceable to a particular issue in the JPOX code, and use of the config options allows better performance. If you encounter any other performance issue please raise a new JIRA with a profiler report since we want JPOX performance to be optimum

> Scalability problem
> -------------------
>
>                 Key: CORE-3243
>                 URL: http://www.jpox.org/servlet/jira/browse/CORE-3243
>             Project: Core
>          Issue Type: Bug
>    Affects Versions: 1.2.0-beta-2
>         Environment: Java 5 build 1.5.0_11-b03, JPOX 1.2 snapshot of 1.5.2007, Oracle 10g, 2x Solaris box
>            Reporter: Ari Tanninen
>
> It seems that increasing the number of threads in a fairly simple application (attached to the forum post) does not increase throughput after 10 or so threads. JProbe shows that the application spends most of its time waiting for access to a few synchronized code blocks in JPOX.
> Whether a new transaction and/or PersistenceManager is created for every set of database operations affects throughput slightly, but throughput increase still stops around 10 threads.

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