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A programmer's view of performance monitoring in the PowerPC microprocessor

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2 Author(s)
Levine, F.E. ; IBM Microelectronics Division, 11400 Burnet Road, Austin, Texas 78758, USA ; Roth, C.P.

Performance monitor (PM) support in on-chip PowerPC® microprocessors is used to analyze processor, software, and system attributes for a variety of workloads. The interface to the PowerPC 604® microprocessor, which we abbreviate “604,” has been externalized to end users. We discuss the enhanced PM support available in an upgrade of the 604, the PowerPC 604e™ microprocessor, which we abbreviate “604e.” We discuss the challenges related to the externalization of the PM support as it relates to other PowerPC processors not derived from the 604 and briefly contrast these PMs with other PMs. We also describe an application programming interface (API) to the on-chip PM support, its design methodology, and its usage considerations, intended to meet these challenges.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:41 ,  Issue: 3 )