Modifying program execution based on profiling
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United States of America Patent
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Jul 13, 2004
Issued Date -
N/A
app pub date -
Jun 24, 1999
filing date -
Jan 28, 1999
priority date (Note) -
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Abstract
A method and a multiprocessor computer for execution of the method. A first CPU has a general register file, an instruciton pipeline, and profile circuitry. The profile circuitry is operatively interconnected and under common hardware control with the instruction pipeline. The profile circuitry and instruction pipeline are cooperatively interconnected to detect the occurrence of profileable events occurring in the instruction pipeline. The profile circuitry is operable without software intervention to effect recording of profile information describing the profileable events into the general register file, without first capturing the information into a main memory of the computer. The recording is essentially concurrent with the occurrence of the profileable events. A second CPU is configured to analyze the generated profile data, while the execution and profile data generation continue on the first CPU, and to control the execution of the program on the first CPU based at least in part on the analysis of the collected profile data.
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