Johannes Edmeier created FELIX-6529:
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Summary: Improve memory usage ManifestParser using String
deduplication
Key: FELIX-6529
URL: https://issues.apache.org/jira/browse/FELIX-6529
Project: Felix
Issue Type: Improvement
Reporter: Johannes Edmeier
Attachments: ManifestParser.patch, image-2022-05-13-14-16-39-509.png,
image-2022-05-13-14-17-55-965.png
In my heap dump I've seen a lot of duplicate Strings produced by the
ManifestParser.
It creates a lot of equal strings for the keys in the manifest but doesn't
deduplicate them and they're hold forever producing a lot on retained heap.
I've patched the ManifestParser to deduplicate just the keys and could save ~8
Megs of heap.
Total usage before: 38MB after: 30MB
Duplicated Strings before:
!image-2022-05-13-14-16-39-509.png!
Duplicated Strings after:
!image-2022-05-13-14-17-55-965.png!
See patch attached.
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