Methods and apparatuses for controlling thread contention

摘要

An apparatus comprises a plurality of cores and a controller coupled to the cores. The controller is to lower an operating point of a first core if a first number based on processor clock cycles per instruction (CPI) associated with a second core is higher than a first threshold. The controller is operable to increase the operating point of the first core if the first number is lower than a second threshold.

主权项

1. A processor comprising:
a plurality of cores; a controller coupled to the plurality of cores including circuitry adapted to reduce an operating point of a first core of the plurality of cores based on a comparison of a performance metric of a second core of the plurality of cores to a set point of the controller, wherein the controller includes circuitry adapted to reduce a throttle state of the first core until a lowest throttle state is reached, and to thereafter reduce a performance state of the first core, wherein the first core is to execute a background application and the second core is to execute a foreground application; and a setting logic to set the set point of the controller.