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https://issues.apache.org/jira/browse/KARAF-5604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16359299#comment-16359299
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ASF subversion and git services commented on KARAF-5604:
--------------------------------------------------------

Commit cbc97ec20499a5d08f419cdd91c775dd219b4fe1 in karaf's branch 
refs/heads/master from [~nite]
[ https://gitbox.apache.org/repos/asf?p=karaf.git;h=cbc97ec ]

[KARAF-5604] Speed up descriptor generation (#446)

* KARAF-5604: Check log.isDebugEnabled() before string concat & cache aether 
Artifacts


> karaf:features-generate-descriptor takes long when faced with complex feature 
> dependencies
> ------------------------------------------------------------------------------------------
>
>                 Key: KARAF-5604
>                 URL: https://issues.apache.org/jira/browse/KARAF-5604
>             Project: Karaf
>          Issue Type: Improvement
>          Components: karaf-tooling
>    Affects Versions: 4.1.3
>            Reporter: Robert Varga
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>             Fix For: 4.2.0, 4.1.5
>
>
> Opendaylight's distribution-check jobs generate features which have complex 
> feature dependencies, which exposes scaling issues in 
> karaf:features-generate-descriptor.
> [https://github.com/opendaylight/integration-distribution/tree/master/features/singles/odl-integration-all]
>  takes ~270 seconds to generate:
> real 4m28.834s
> user 3m40.287s
> sys 1m23.629s
> [https://github.com/opendaylight/integration-distribution/tree/master/features/repos/index]
>  takes ~638 seconds to generate:
> real 10m38.859s
> user 7m55.004s
> sys 3m17.269s
> Running profiling shows that this time is dominated by short-lived 
> FileInputStreams being generated at a rate of 7K-8Kps – which are coming from 
> both feature reading and from artifact resolution.



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