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Updated Sept 14, 2016
A message displays in the notification center that there is a minor performance reduction due to disabling Pub/Sub over MessageBus. If you check your SolarWinds logs on your Orion server, the logs have multiple RabbitMQ errors.
Any 32-bit OS or FIPS environment running on Orion Platform 2016.2 or later, which includes the following products:
This is because RabbitMQ is either not installed or is not running. FIPS may prevent RabbitMQ from running normally.
The Orion server is trying to connect with hosts using RabbitMQ. Because RabbitMQ is not available, there is a 15 second pause per process as the Orion server waits for a response before using the backup messaging protocol.
You have two options to resolve this issue:
The services restart normally and performance should improve. The notification should not return.