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MessageQueueSend

Short Description

Waiting to send bytes to a shared message queue.

Additional Information

MessageQueueSend is in the Inter Process Communication (IPC) wait class. In this case the wait is to receive bytes from a message queue. Message queues provide an asynchronous communication protocol in which the sender and receiver of messages don't need to interact at the same time - messages are held in a queue until the recipient retrieves them. Amongst other places, MessageQueue* waits are seen in parallel query co-ordination.

How to reduce this wait

In a database with Shared Message Queues set up, it will be normal to see this wait state.

PostgreSQL documentation - The Statistics Collector

PostgreSQL docs - Wait Events of Type IPC

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