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From "Kevan Miller (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GERONIMO-6114) Avoid ServiceLoader lookup during OpenWebBeansInitializer
Date Thu, 18 Aug 2011 05:13:27 GMT

     [ https://issues.apache.org/jira/browse/GERONIMO-6114?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kevan Miller updated GERONIMO-6114:
-----------------------------------

    Attachment: getWiredBundle.png

This shows the callstack that I captured using YourKit.

> Avoid ServiceLoader lookup during OpenWebBeansInitializer
> ---------------------------------------------------------
>
>                 Key: GERONIMO-6114
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-6114
>             Project: Geronimo
>          Issue Type: Sub-task
>      Security Level: public(Regular issues) 
>    Affects Versions: 3.0
>            Reporter: Kevan Miller
>             Fix For: 3.0
>
>         Attachments: getWiredBundle.png
>
>
> OpenWebBeans initialization can represent a major portion of a Geronimo server's startup
time. I've seen it take nearly 1/4 of a server's startup time. Nearly all of this time is
caused because OpenWebBeans is using ServiceLoader.load(). 
> A search of wired bundles shouldn't be necessary (and we should avoid, if possible).
We should be able to replace OpenWebBeans DefaultImplementationLoaderService with our own
LoaderService implementation. This LoaderService implementation could in turn avoid the use
of XBean's BundleClassLoader (BundleClassLoader.getResource() is what drives the getWiredBundle()
processing).

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