[jira] [Closed] (FELIX-4811) Optimize ConfigurationManager#listConfigurations

["Carsten Ziegeler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FELIX-4811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carsten Ziegeler closed FELIX-4811.
-----------------------------------

> Optimize ConfigurationManager#listConfigurations
> ------------------------------------------------
>
>                 Key: FELIX-4811
>                 URL: https://issues.apache.org/jira/browse/FELIX-4811
>             Project: Felix
>          Issue Type: Improvement
>          Components: Configuration Admin
>    Affects Versions: configadmin-1.8.0
>            Reporter: Guillaume Nodet
>            Assignee: Guillaume Nodet
>             Fix For: configadmin-1.8.2
>
>         Attachments: yourkit.png
>
>
> The ConfigurationManager#listConfigurations is far from optimal.
> It iterates on all configurations, thereby creating a copy of the properties for each configuration.   Then, for each configuration, filter#match() is called, which itself create a case insentive copy of the properties for matching.
> If you have quite a lot of configurations and quite a lof of SCR components, it can be quite time consuming.
> Attached is a YourKit profile view which shows that 90% of the time is spent into copying properties for nothing. 



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