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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-9929) More efficient memory handling for tiny off-heap cache entries
Date Wed, 29 Jul 2015 20:26:06 GMT
Robert Stupp created CASSANDRA-9929:
---------------------------------------

             Summary: More efficient memory handling for tiny off-heap cache entries
                 Key: CASSANDRA-9929
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9929
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Robert Stupp
            Assignee: Robert Stupp
            Priority: Minor
             Fix For: 3.x


CASSANDRA-9738 + CASSANDRA-9739 usually have tiny cache entries. The overhead of any general-purpose
memory allocator is probably too high.

[~benedict] proposed a chunked allocation strategy for OHC that allows to allocate the whole
memory up-front - thus reducing the malloc/free overhead to 0.



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