Method and system for providing temporal threshold support during performance monitoring of a pipelined processor
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United States of America Patent
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Sep 3, 2002
Grant Date -
N/A
app pub date -
Jun 30, 1999
filing date -
Jun 30, 1999
priority date (Note) -
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Abstract
A method and system for monitoring the performance of a instruction pipeline is provided. The processor may contain a performance monitor for monitoring for the occurrence of an event within a data processing system. An event to be monitored may be specified through software control, and the occurrence of the specified event is monitored during the execution of an instruction in the execution pipeline of the processor. A particular instruction may be specified to execute within a threshold time for each stage of the instruction pipeline. The specified event may be the completion of a single tagged instruction beyond the specified threshold interval for a stage of the instruction pipeline. The performance monitor may contain a number of counters for counting multiple occurrences of specified events during the execution of multiple instructions, in which case the specified events may be the completion of tagged instructions beyond a threshold interval for any stage of the multiple stages of the execution pipeline. As the instruction moves through the processor, the performance monitor collects the events and provides the events for optimization analysis.
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