The data for each event contains a high-resolution timestamp, a thread ID, and a CPU ID. These can be used to filter the metrics in the Performance Analyzer by time, thread, or CPU. See the getcpuid(2) man page for information about CPU IDs. On systems where getcpuid is not available, the processor ID is -1, which maps to Unknown.
In addition to the common data, each event generates specific raw data, which is described in the following sections. Each section also contains a discussion of the accuracy of the metrics derived from the raw data and the effect of data collection on the metrics.