An index opaquely computed by the agent and which uniquely identifies a Memory Manager. The jvmMemManagerIndex index is opaquely computed by the agent, from e.g the hash code of the MemoryManager (or MemoryManager name). The agent is responsible for allocating a free index when it needs one (e.g. if two objects have the same hash, then it may increment one of the values until the conflict is resolved). As a result a manager must not depend on the value of that index across, e.g. reboot of the agent, as this value is not guaranteed to stay identical after the agent restarts.