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https://issues.apache.org/jira/browse/FELIX-4656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14500054#comment-14500054
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Richard S. Hall edited comment on FELIX-4656 at 4/17/15 3:36 PM:
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Tom's patch is pretty simple and it does help improve understanding of the
code, so I say apply it and release it.
was (Author: rickhall):
Tom's patch is pretty simple and it does help improve understanding of the
code, so I saw apply it and release it.
> Improve memory usage and speed of the resolver
> ----------------------------------------------
>
> Key: FELIX-4656
> URL: https://issues.apache.org/jira/browse/FELIX-4656
> Project: Felix
> Issue Type: Improvement
> Components: Resolver
> Reporter: Guillaume Nodet
> Assignee: Guillaume Nodet
> Fix For: resolver-1.2.0
>
> Attachments: FELIX-4656.patch
>
>
> During big resolutions (> 100 bundles), the memory consumption can become
> very huge, mostly by keeping a lot of copies of the Candidates object.
> I want to lower the memory requirements of the resolver without touching the
> algorithm at all (which would be a different improvement).
> This can be done by using :
> * lower memory intensive collections
> * do smart copies of those collections (where they would only actually copy
> the data when modify)
> The second item is slightly more difficult to achieve, as the maps in the
> Candidate objects contains Set and List, which would mean that those must be
> copied too. So it could actually be complementary, if achievable.
> For the first one, the HashMap and HashSet are very memory intensive. I'll
> introduce two new collections which will lower the requirements.
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