[jira] [Resolved] (SLING-4532) Performance: DefaultSlingScript has too much overhead

["Joel Richard (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLING-4532?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joel Richard resolved SLING-4532.
---------------------------------
    Resolution: Invalid

Closing because the overhead is added in a BindingsValuesProvider which is called in DefaultSlingScript.verifySlingBindings and not in DefaultSlingScript itself.

> Performance: DefaultSlingScript has too much overhead
> -----------------------------------------------------
>
>                 Key: SLING-4532
>                 URL: https://issues.apache.org/jira/browse/SLING-4532
>             Project: Sling
>          Issue Type: Improvement
>          Components: Scripting
>    Affects Versions: Scripting Core 2.0.28
>            Reporter: Joel Richard
>              Labels: performance
>         Attachments: measure.patch
>
>
> While I was profiling a slow page, I saw that a significant amount of time is spent inside DefaultSlingScript. Since profilers often cannot be trusted, I added some code (see attachment) to measure the time spent without the script execution itself (JSP in my case) and came to 8% of the whole page rendering time. Since the JSP itself has been compiled before the measurements, I would have expected the overhead clearly below 1%.
> The page which I profiled has about 100 sling includes.



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