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Posted to dev@uima.apache.org by "Marshall Schor (JIRA)" <de...@uima.apache.org> on 2015/03/11 16:04:38 UTC

[jira] [Created] (UIMA-4283) tuning Binary Compressed Cas

Marshall Schor created UIMA-4283:
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             Summary: tuning Binary Compressed Cas
                 Key: UIMA-4283
                 URL: https://issues.apache.org/jira/browse/UIMA-4283
             Project: UIMA
          Issue Type: Improvement
          Components: Core Java Framework
            Reporter: Marshall Schor
            Priority: Minor
             Fix For: 2.7.1SDK


Measurements are showing some tuning is needed in buffer sizes for the binary compressed serialization/deserialization code.  Reducing one buffer from a max of 32k to 1k showed a speed up in deserialization of more than 2.5 x using an IBM JVM on an Intil i7 with 128K L1; using a Oracle JVM - there was a minor speedup.  This effect appears to be due to L1 cache flushing/dumping. 

Check and tune both form 4 and 6.



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