RSIM provides a wide variety of statistics related to the processors, the caches, the network, and the memory system. RSIM prints a concise summary of the most important statistics on the standard error file and a detailed set of statistics on the simulation output file; both can be redirected through command line options. An application can use the phase-related functions and statistics-reporting functions described in Chapter 5 to print statistics for relevant portions of the application separately, rather than for the entire application at once.
Additionally, RSIM provides partial statistics periodically (with a period set by the ``-A'' option), in which each processor specifies the amount of simulated time it has been executing, and the number of cycles since the last graduation (for this statistic, an aggregate class is not considered to provide any graduations until all instructions in the set have graduated). This information can be useful for detecting application deadlocks (if each synchronization is made into an aggregate class), or for detecting deadlocks caused by simulator changes. RSIM can be forced to print partial statistics immediately if the user sends an alarm signal to the RSIM process by invoking a kill -ALRM <pid> at the shell prompt, where <pid> is the UNIX process ID of the simulator.