Hardware queue manager with water marking

A computer program product for managing one or more queues in a multi-processor environment, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform:

• monitoring, by a queue manager, a queue in a memory configured to be accessed by a plurality of processing elements in the multi-processor environment, the queue manager disposed in communication with a plurality of processors and with the memory, the queue manager configured to control a queue in the memory, the queue including a plurality of queue elements, the queue manager configured to intercept a message from a processing element of the plurality of processing elements and perform one or more queuing operations on the queue based on the message;
• inspecting a dynamically configurable queue full value maintained by the queue manager, the queue full value being a threshold value that specifies a maximum number of the queue elements that can be written to before a queue full condition is detected, wherein the maximum number of queue elements is based on a total number of processing elements that have access to the memory at a given time;
• comparing a number of full queue elements in the queue to the threshold value;
• and
• detecting the queue full condition based on the number of full queue elements equal to or exceeding the threshold value.