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Distributed performance counters

United States Patent

8,595,389
November 26, 2013
View the Complete Patent at the US Patent & Trademark Office
A plurality of first performance counter modules is coupled to a plurality of processing cores. The plurality of first performance counter modules is operable to collect performance data associated with the plurality of processing cores respectively. A plurality of second performance counter modules are coupled to a plurality of L2 cache units, and the plurality of second performance counter modules are operable to collect performance data associated with the plurality of L2 cache units respectively. A central performance counter module may be operable to coordinate counter data from the plurality of first performance counter modules and the plurality of second performance modules, the a central performance counter module, the plurality of first performance counter modules, and the plurality of second performance counter modules connected by a daisy chain connection.
Davis; Kristan D. (Rochester, MN), Evans; Kahn C. (Rochester, MN), Gara; Alan (Yorktown Heights, NY), Satterfield; David L. (Tewksbury, MA)
International Business Machines Corporation (Armonk, NY)
12/ 684,738
20110172968
January 8, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract No.: B554331 awarded by Department of Energy. The Government has certain rights in this invention.