[AMQ-7340] Scheduled messages performance degrade

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 5.16.4, 5.17.0

Environment

ActiveMQ broker has been started in a docker container, with (most likely) sufficient allocation of resources.

• Assignee: Jean-Baptiste Onofré
• Reporter: Daynews
• Created: 08/Nov/19 15:57
• Updated: 03/Jun/22 09:09
• Resolved: 19/Jan/22 18:02

Description

I have sent lot of scheduled messages with 10ms delay between each to see if the broker can cope with high load of scheduled messages. Sending delayed messages to the queue works fine, however I get a problem when those messages need to be put to the main queue when next schedule time is reached. The rate of putting scheduled messages to the main queue drops drastically at around 1500-3000 messages. I tried to search for a potential cause why this happen, but was not able to indicate anything. Even restarting the broker or cleaning the main queue, the rate of putting scheduled messages stays at ~0.5s leaving many scheduled messages behind. 

Does anyone know a potential cause for his problem? Is this performance bottleneck or insufficient resources or badly configured RabitMQ (I've used default settings).

Thanks for the support.