A microprocessor comprises a cache including a tag array; a tag pipeline that arbitrates access to the tag array; and a pattern detector. The pattern detector comprises snapshot capture logic that captures snapshots of tagpipe arbs—including information about whether the tagpipe arb is a load, snoop, store or other arb type and whether the tagpipe arb completed or replayed—and a plurality of configurable register modules operable to store user-configured snapshot patterns. Configuration logic enables a user to specify, for each configurable register module, properties of tagpipe arbs for the pattern detector to detect as well as dependencies between the configurable register modules. A register module becomes triggered if a tagpipe arb or pattern of tagpipe arbs meets the user-specified properties for the register module and if any other register module on which the register module depends is also in a triggered state.