Message Priority

The Management Portal displays the priority of the messages in several places. The priority of a message determines how that message is handled relative to other messages in the same message queue. For information about message queues, see Monitoring a Production.

The InterSystems IRIS messaging engine determines the priority of a message, which is one of the following:

HighSync (1) — Used for ACK messages and alarms for interrupted tasks.
Sync (2) — Used for synchronous messages.
SimSync (4) — Used for an asynchronous call made for a BPL synchronous <call>. This ensures that the request and response are processed before any queued asynchronous message.
Async (6) — Used for other asynchronous messages.

Message Invocation Style and Time Stamps