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Posted to dev@sling.apache.org by "Carsten Ziegeler (JIRA)" <ji...@apache.org> on 2012/05/26 16:30:24 UTC

[jira] [Closed] (SLING-2361) Drop commons.math dependency

     [ https://issues.apache.org/jira/browse/SLING-2361?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carsten Ziegeler closed SLING-2361.
-----------------------------------

    
> Drop commons.math dependency
> ----------------------------
>
>                 Key: SLING-2361
>                 URL: https://issues.apache.org/jira/browse/SLING-2361
>             Project: Sling
>          Issue Type: Improvement
>          Components: Engine
>            Reporter: Felix Meschberger
>            Assignee: Felix Meschberger
>             Fix For: Engine 2.2.6
>
>
> As of Rev. 1138159 (SLING-1476) the RequestProcessorMBeanImpl exists to convey Sling request processing statistics. For the mean and variance values the Commons Math SynchronizedSummaryStatistics class is used.
> IMHO this is quite a heavy dependency for such a simple computation (well, the mathematics behind this are not simple, at least not to me ;-) ). So I suggest we in lie a simple continuously updating algorithm into the addRequestDuration method, which is modified to be synchronized.

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