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https://issues.apache.org/jira/browse/SLING-2516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399158#comment-13399158
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Felix Meschberger commented on SLING-2516:
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Committed a first shot of such a tool in Rev. 1352777
The maven project is both a bundle and a standalone Java Application. When
deployed as a bundle in Sling's OSGi framework it registers as a Sling request
level filter and dumps information for requests to a file:
* one line with request start time stamp, processing time in ms, request
URL, method, response content type and status
* The complete RequestProgressTracker data
When used as a standalone java application (à la java -jar ...) it takes the
name of a file produced by said filter and opens a window with the list of
requests collected in the file. This list can be sorted by any of the columns
-- for performance analysis sorting by the request processing time is very
helpful. When clicking on a request another window is opened showing the
RequestProgressTracker data in three columns: time offset since start of
request, time delta since last entry, entry message. These helps nicely find
hotspots in request processing.
> Reuqest Performance Analysis helper
> -----------------------------------
>
> Key: SLING-2516
> URL: https://issues.apache.org/jira/browse/SLING-2516
> Project: Sling
> Issue Type: New Feature
> Components: Extensions
> Reporter: Felix Meschberger
> Assignee: Felix Meschberger
>
> To measure overall request performance, Sling has a RequestProgressTracker
> where each request is tracking progress as a request is processed. Normally
> this RequestProgressTracker is just collected but other than being presented
> in the "Recent Requests" page of the web console not further used.
> To track down generic bottle necks and processing peaks while doing load
> tests on a Sling system, it would be usefull if the RequestProgressTracker
> data could be dumped into a file which can later be displayed and analysed.
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