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From Jean-Baptiste Onofré (Jira) <j...@apache.org>
Subject [jira] [Updated] (KARAF-6454) FeaturesServiceImpl downloadThreads does not improve throughput
Date Mon, 05 Oct 2020 15:53:00 GMT

     [ https://issues.apache.org/jira/browse/KARAF-6454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Baptiste Onofré updated KARAF-6454:
----------------------------------------
    Fix Version/s:     (was: 4.2.10)
                   4.2.11

> FeaturesServiceImpl downloadThreads does not improve throughput
> ---------------------------------------------------------------
>
>                 Key: KARAF-6454
>                 URL: https://issues.apache.org/jira/browse/KARAF-6454
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf
>            Reporter: Fabian Lange
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>              Labels: features
>             Fix For: 4.3.0, 4.2.11
>
>         Attachments: Screenshot 2019-10-15 at 16.53.00.png
>
>
> I am looking into a slow Karaf startup and I stumbled onto this problem
> FeaturesServiceImpl does allow for parallelism thanks to the downloadThreads configuration
> It does respect this value and createDownloadManager() will use it to size the threadpool.
> However adding a large amount of features at the same time results in one by one downloads
across these threads.
> I am currently looking for any pointers where the features install could be sequenced.
> Attached is a JProfiler screenshot illustrating this problem.



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