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https://issues.apache.org/jira/browse/UIMA-4685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15018340#comment-15018340
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Peter Klügl commented on UIMA-4685:
-----------------------------------

Yep, the problem is rather the reading because of the int sorting for the 
index. I seem to remember that this was quite faster some time ago. For the xmi 
deserializer, SVN told me that there is a new check method that takes a lot of 
time (my mail from 3.11.2015).

Thanks for the hint with the unit test. I will take a look at it.

> Support different CAS serializations in CAS Editor
> --------------------------------------------------
>
>                 Key: UIMA-4685
>                 URL: https://issues.apache.org/jira/browse/UIMA-4685
>             Project: UIMA
>          Issue Type: New Feature
>          Components: CasEditor
>    Affects Versions: 2.8.1SDK
>            Reporter: Peter Klügl
>         Attachments: caseditor.csv, caseditor_bincas.csv
>
>
> Support different CAS serializations in CAS Editor. Some recent profiling 
> revealed that, when opening a 35MB xmiCAS, the CAS Editor spends about 70% of 
> its time for deserializing.



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