Francesco Nigro created ARTEMIS-1977:

             Summary: ASYNCIO can reduce sys-calls to retrieve I/O completion 
                 Key: ARTEMIS-1977
             Project: ActiveMQ Artemis
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 2.6.2
            Reporter: Francesco Nigro
            Assignee: Francesco Nigro
             Fix For: 2.7.0

On LibAIO is possible to retrieve the I/O completion events without 

using io_getevents sys-calls by reading the user-space ring buffer used by the

kernel to store them.

This is already beneficial for very fast disks and necessary for further 

of ASYNCIO Journal to leverage (very) fast low-latency disks by going completly




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