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Posted to dev@qpid.apache.org by "Ted Ross (JIRA)" <ji...@apache.org> on 2016/09/15 18:39:23 UTC

[jira] [Created] (DISPATCH-511) Remove performance problems from locks and memory allocation

Ted Ross created DISPATCH-511:
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             Summary: Remove performance problems from locks and memory allocation
                 Key: DISPATCH-511
                 URL: https://issues.apache.org/jira/browse/DISPATCH-511
             Project: Qpid Dispatch
          Issue Type: Improvement
          Components: Container
            Reporter: Ted Ross
            Assignee: Ted Ross
             Fix For: 0.7.0


There are a number of performance issues with locks and memory pooling:
  - Locks are not allocated on cache-line boundaries and suffer from false-sharing issues.
  - The extra lock checks (checking the acquired state) cause significant overhead.  These should be removed.
  - Pooled memory objects are not cache-line aligned and suffer from false-sharing
  - Memory pool statistics are useful but costly from a performance standpoint.  These should be able to be optionally disabled.



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