The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2013
Filed:
Dec. 23, 2009
Gregory W. Alexander, Pflugerville, TX (US);
Jane Bartik, Poughkeepsie, NY (US);
Michael Billeci, Poughkeepsie, NY (US);
David Hutton, Tallahassee, FL (US);
Christian Jacobi, Poughkeepsie, NY (US);
Jang-soo Lee, Poughkeepsie, NY (US);
Eric Schwarz, Gardiner, NY (US);
Chung-lung Shum, Wappingers Falls, NY (US);
Phil C. Yeh, Poughkeepsie, NY (US);
Gregory W. Alexander, Pflugerville, TX (US);
Jane Bartik, Poughkeepsie, NY (US);
Michael Billeci, Poughkeepsie, NY (US);
David Hutton, Tallahassee, FL (US);
Christian Jacobi, Poughkeepsie, NY (US);
Jang-Soo Lee, Poughkeepsie, NY (US);
Eric Schwarz, Gardiner, NY (US);
Chung-Lung Shum, Wappingers Falls, NY (US);
Phil C. Yeh, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and method for collecting instrumentation data in a processor with a pipelined instruction execution stages arranged in an out-of-order execution architecture. One instruction group in a Global Completion Table is marked as a tagged group. Instrumentation data is stored for processing stages processing instructions associated with the tagged group. Sample signal pulses trigger a determination of whether the tagged group is the next-to-complete instruction group. When the sample pulse occurs at a time when the tagged group is the next-to-complete group, the instrumentation data is written as an output. Instrumentation data present during sample pulses that occur when the tagged group is not the next-to-complete group is optionally discarded. Sample pulses are generated at a rate equal to the desired sample rate times the number of groups in the global completion table to better ensure occurrence of a next-to-complete tagged group.