[jira] [Closed] (UIMA-2385) Improve XmiCasDeserializer performance

["Marshall Schor (JIRA)" <de...@uima.apache.org>]

     [ https://issues.apache.org/jira/browse/UIMA-2385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marshall Schor closed UIMA-2385.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 2.4.1SDK
         Assignee: Marshall Schor  (was: Adam Lally)

Applied patch.
                
> Improve XmiCasDeserializer performance
> --------------------------------------
>
>                 Key: UIMA-2385
>                 URL: https://issues.apache.org/jira/browse/UIMA-2385
>             Project: UIMA
>          Issue Type: Improvement
>          Components: Core Java Framework
>    Affects Versions: 2.4.0SDK
>            Reporter: Adam Lally
>            Assignee: Marshall Schor
>             Fix For: 2.4.1SDK
>
>         Attachments: UIMA-2385.bps.patch
>
>
> I profiled an expensive CAS deserialization and found that 46% of the time was in CASImpl.ll_getFSForRef (the method that creates a FeatureStructure Java object for a CAS FS).  All those calls were coming from deserializing arrays (of which this particular CAS has many).
> It is unnecessary to create FeatureStructure Java objects here.  For non-array FSs, XmiCasDeserializer uses low-level CAS APIs in order to avoid this overhead.  But for arrays, it currently does not use the low-level APIs.

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