fpuinfo
Provider
The fpuinfo
provider includes probes that correspond to the simulation of floating-point instructions on SPARC microprocessors. While most floating-point instructions are executed in hardware, some floating-point operations trap into the operating system for simulation. The conditions under which floating-point operations require operating system simulation are specific to a microprocessor implementation. The operations that require simulation are rare. However, if an application uses one of these operations frequently, the effect on performance could be severe. The fpuinfo
provider enables rapid investigation of floating-point simulation seen by using the kstat2
and the fpu_info
kernel statistic or trapstat
and the fp-xcp-other
trap. For more information, see
trapstat
(8).