When you open a profile in JMC, it normally takes a few seconds, but there are some profiles that JMC struggles to load. This happens when a profile contains events which violate an assumption made in JMC’s parser: events on the same thread are almost always disjoint in their durations. When JMC parses a JFR file, it splits the events of the same type emitted on the same thread into lanes so that events within a lane are disjoint. JMC can handle overlapping events, but assumes this essentia...
