Lorenz Quack created QPID-7566:
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Summary: [Java Broker] Potentially improve performance by
separating IO from processing of commands
Key: QPID-7566
URL: https://issues.apache.org/jira/browse/QPID-7566
Project: Qpid
Issue Type: Improvement
Components: Java Broker
Reporter: Lorenz Quack
In no particular order
* In {{org.apache.qpid.server.queue.AbstractQueue#deliverSingleMessage}} we
currently call {{_queueConsumerManager.setNotified()}} twice to guard against a
race condition (a message becoming available just before a consumer is moved
from notified to interested). We could potentially optimise this by merging the
Notified and Interested lists.
* Currently, when the broker receives a AMQP command the response is handled
synchronously in the same IO thread. We could try to separate those steps into
three distinct asynchronous tasks: receive message, process, send response.
This could help us making more efficient use of the IO bandwidth by pipe-lining
the IO workload.
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