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https://issues.apache.org/jira/browse/ARIES-1565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15329595#comment-15329595
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Wouter Bancken commented on ARIES-1565:
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[[email protected]]
We totally understand the hesitation to adapt utils and we also understand
embedding this in Subsystems itself might not be the optimal approach. We did
the pull request like this as a suggestion for improvement (since it is a major
improvement in startup time). Where the change would reside in the code should
be determined by the Aries community :)
The technical issues seem manageable. Including a wrapping object which does a
recursive delete of a folder should solve the deletion. The code can be
slightly rewritten to support java 1.6.
I added an ESA file to the issue which you can you to profile some data.
My results for the installation phase:
- Aries 2.0.8: 10 seconds
- Your suggestion: 10 seconds
- Our suggestion: 3 seconds
I also added some call stacks to the issue. The times in those stacks are of
course higher due to the profiling.
> Performance Improvement: unpack subsystem artifacts to tmp folder to avoid
> directly reading from zip archive
> ------------------------------------------------------------------------------------------------------------
>
> Key: ARIES-1565
> URL: https://issues.apache.org/jira/browse/ARIES-1565
> Project: Aries
> Issue Type: Improvement
> Components: Subsystem, Util
> Affects Versions: subsystem-2.0.8, util-1.1.2
> Reporter: Wouter Bancken
> Attachments: 1565.patch
>
>
> h4. Description
> Aries copies ESA archives to a temporary zip file during the installation
> phase. Afterwards, bundles are read directly from this temporary zip which
> has a large impact on the startup performance of Aries applications. By
> unpacking the esa artifact into the temporary folder it is unpacked only
> once. Subsequent reads for the bundles (jars) can be read directly from the
> folder.
> h4. Pull request
> https://github.com/apache/aries/compare/subsystem-2.0.x...WouterBanckenACA:io_performance_optimalisation?expand=1
> h4. Mailinglist
> http://mail-archives.apache.org/mod_mbox/aries-user/201606.mbox/%3CCAL5nZgTq5FxDvURJbzcEZ9YHx6vTs3HAOuFYDYA3ec9OZbmwjA%40mail.gmail.com%3E
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