In an embodiment, an apparatus comprises one or more processors and a computer-readable storage medium storing one or more sequences of instructions which, when executed by the processors, cause the processors to perform generating relationship information based on relationships between one or more events that are generated by one or more managed systems. The computer-readable storage medium further comprises instructions which, when executed, cause sending the relationship information to the managed systems, wherein the relationship information allows the managed systems to determine whether reporting of the events, by the managed systems, should be suppressed; and receiving, from one or more managed systems, a report about an event when reporting of the event cannot be suppressed.