[jira] [Created] (MESOS-2126) Libprocess Future: Improve performance, List instead of Queue

["Joris Van Remoortere (JIRA)" <ji...@apache.org>]

Joris Van Remoortere created MESOS-2126:
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             Summary: Libprocess Future: Improve performance, List instead of Queue
                 Key: MESOS-2126
                 URL: https://issues.apache.org/jira/browse/MESOS-2126
             Project: Mesos
          Issue Type: Improvement
          Components: libprocess
            Reporter: Joris Van Remoortere
            Assignee: Joris Van Remoortere


std::queue does dynamic allocation upon construction.
std::list does dynamic allocation upon insertion.

Since Future's Data structure currently aggregates 5 queues, this implies a lot of dynamic allocation upon construction of a future. In crucial paths we tend not to use most of these queues, meaning the allocations were of no benefit.

If we replace std::queue with std::list then we pay per use, which in most cases, and definitely in crucial paths, reduces dynamic allocation and improves performance.



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