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Shared performance monitor in a multiprocessor system

United States Patent

December 2, 2014
View the Complete Patent at the US Patent & Trademark Office
A performance monitoring unit (PMU) and method for monitoring performance of events occurring in a multiprocessor system. The multiprocessor system comprises a plurality of processor devices units, each processor device for generating signals representing occurrences of events in the processor device, and, a single shared counter resource for performance monitoring. The performance monitor unit is shared by all processor cores in the multiprocessor system. The PMU is further programmed to monitor event signals issued from non-processor devices.
Chiu; George (Cross River, NY), Gara; Alan G. (Mount Kisco, NY), Salapura; Valentina (Chappaqua, NY)
International Business Machines Corporation (Armonk, NY)
13/ 484,797
May 31, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OF DEVELOPMENT The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract No. B548850 awarded by the Department of Energy.