SGI Profiling Tools
The hardware counters in the R10000 CPU, together with support from the IRIX kernel, make it possible to record the run-time behavior of the program without modifying the code.
- perfex runs a program and reports exact counts of any two selected events from the hardware counters. Alternatively, it time-multiplexes all 32 countable events and reports extrapolated totals. Perfex is useful for identifying what problem is hurting the performance of your program the most.