MEASUREMENT OF PERFORMANCE SCALABILITY IN A MICROPROCESSOR

摘要

A scalability algorithm causes a processor to initialize a performance indicator counter, operate at an initial frequency of the first clock signal for a first duration, and determine, based on the performance indicator counter, an initial performance of the first processing core. The algorithm may then cause the processor to operate at a second frequency of the first clock signal for a second duration and determine, based on the performance indicator counter, a second performance of the first processing core. A performance scalability of the first processing core may be determined based on the initial performance and the second performance and an operational parameter, such as one or more clock frequencies and/or supply voltage(s), may be changed based on the determined scalability.

主权项

1. A computer system, comprising:
a processor including:
a first processing core; anda second processing core; a power control unit to provide a first clock signal to the first processing core and a second clock signal to the second processing core; and a computer readable storage medium to store scalability algorithm instructions, executable by the processor, to cause the processor to:
initialize a performance indicator counter;operate at an initial frequency of the first clock signal for a first duration;determine, based on the performance indicator counter, a first performance value of the first processing core;operate at a second frequency of the first clock signal for a second duration;determine, based on the performance indicator counter, a second performance value of the first processing core;determine a performance scalability of the first processing core based on the initial performance value and the second performance value;modify at least one of the first clock signal and the second clock signal based on the performance scalability determined.