1. An apparatus, comprising: one or more processors; a computer-readable storage medium comprising one or more stored sequences of instructions which, when executed by the one or more processors, cause the one or more processors to perform: generating relationship information based on relationships between two or more events that are generated by one or more managed systems; sending the relationship information to one or more of the managed systems; wherein the relationship information is configured to allow the one or more managed systems to determine, based on the relationships between the two or more events, whether reporting of the two or more events, by the one or more managed systems, should be suppressed; receiving, from one of the managed systems, a report about an event, from the two or more events, when reporting of the event cannot be suppressed.