[jira] [Created] (MESOS-6971) Use arena allocation to improve protobuf message passing performance.

["Benjamin Mahler (JIRA)" <ji...@apache.org>]

Benjamin Mahler created MESOS-6971:
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             Summary: Use arena allocation to improve protobuf message passing performance.
                 Key: MESOS-6971
                 URL: https://issues.apache.org/jira/browse/MESOS-6971
             Project: Mesos
          Issue Type: Improvement
          Components: libprocess, technical debt
            Reporter: Benjamin Mahler


The protobuf message passing provided by {{ProtobufProcess}} provide const access of the message and/or its fields to the handler function.

This means that we can leverage the [arena allocator|https://developers.google.com/protocol-buffers/docs/reference/arenas] provided by protobuf to reduce the memory allocation cost during de-serialization and improve cache efficiency.

This would require using protobuf 3.x with "proto2" syntax (which appears to be the default if unspecified) to maintain our existing "proto2" requirements. The upgrade to protobuf 3.x while keeping "proto2" syntax should be tackled via a separate ticket that blocks this one.



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