US 2012/0060022 A1 · METHOD AND SYSTEM FOR ADJUSTING CPU FREQUENCY

Abstract

A method for adjusting central processing unit (CPU) frequency according to the CPU utilization rate in a computer, the method includes the following steps. A Basic Input Output System (BIOS) is booted by turning on the computer. A performance monitor in the CPU is started by the BIOS. A timer is turned on by the BIOS. The system management interrupt program is read by the timer during a time period. A number of clock signals and time values is recorded by the performance monitor in two adjacent time periods. The CPU utilization rate is determined by the performance monitor according to number of clock signals, the time values, and a CPU clock speed. A CPU frequency is adjusted by the BIOS according to the CPU utilization rate. The computer's operation system (OS) is booted by the BIOS.

Claims12

Dependent claims

A method for adjusting central processing unit (CPU) frequency according to a CPU utilization rate in a computer, the method comprises the following steps:

turning on the computer to boot a Basic Input Output System (BIOS);
starting a performance monitor in the CPU by the BIOS;
turning on a timer by the BIOS;
reading a system management interrupt program during a time period by the timer;
recording a number of clock signals and time values by the performance monitor in two adjacent time periods;
determining the CPU utilization rate by the performance monitor according to the number of clock signals, the time values, and a CPU clock speed;
adjusting a CPU frequency by the BIOS according to the CPU utilization rate;
and
booting the computer's operation system (OS) by the BIOS.

6 more elements

Dependencies are inferred from the claim text.

Method and system for adjusting cpu frequency

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Method and system for adjusting cpu frequency

Life of this patent

Abstract

Claims12