# US 7,412,354 B2 · Method for measuring quantity of usage of CPU > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,412,354 B2 - Document ID: US7412354B2 - Status: Granted - Kind: B2 - Application number: 11/410,834 - Filed: 2006-04-26 - Published: 2006-09-21 - Granted: 2008-08-12 - Earliest claimed: 2000-08-28 - Assignees: Protimus Technologies LLC - Inventors: Sang Ho Lee; Jang Keun Oh - Web page: https://patentgrep.com/patent/US7412354B2 ## CPC - G06F 11/3419: {by assessing time} - G06F 11/3423: {where the assessed time is active or idle time} - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The present invention relates to a method for measuring a quantity of usage of a CPU, in particular to a method for measuring a quantity of usage of a CPU which is capable of getting a credible quantity of usage of a CPU without amending an algorithm in order to adapt it to the an operating system, e.g., MS-Windows System, or requiring a complicated code. The method uses various algorithms provided by the operating system on the behalf of a registry storing a quantity of usage of a CPU inside a system. Accordingly the present invention can measure a quantity of usage of a CPU easily without lowering a performance of the operating system. ## Claims ### Claim 1 A method for measuring processing resource utilization in a personal computer, comprising: providing an operating system registry containing a processor usage information of a processor in a computer system; reading execution times of threads during a predetermined timer time interval using one or more manager functions, wherein the threads are executed by the processor; adding execution time values for each thread that is not a system thread to get a first total; determining a quantity of usage of the processor using the first total; and updating the processor usage information in the operating system registry. ### Claim 2 A method for measuring processing resource utilization in a personal computer, comprising: providing a personal computer executable process algorithm for monitoring the usage of a processor; reading execution times of threads during a predetermined timer time interval using one or more manager functions, wherein the threads are executed by the processor; adding execution time values for each thread that is not a system thread to get a first total; and determining a quantity of usage of the processor using the first total, wherein the quantity of usage is used by the personal computer. ### Claim 3 A method for measuring CPU usage, the CPU executing threads, comprising: reading the execution times of all threads except for a system thread during a prescribed timer time interval; adding the values of the execution times to obtain a first sum; subtracting a second sum of previously executed and stored thread execution times from the first sum to obtain a result; and calculating a CPU usage by dividing the result by the prescribed timer time interval, wherein the CPU usage is stored in a memory. ### Claim 4 A method for updating a resource utilization value in an updatable usage value register contained in a processing resource circuit, comprising: reading execution times of a first subset of threads executing during a time interval, the first subset excluding system threads; adding the read execution times of the first subset of threads to obtain a first total; calculating a current resource utilization information based on a calculation involving the first total and the time interval; and updating the updatable usage value register with the current resource utilization information. ### Claim 5 An article including a machine-readable storage medium containing instructions, said instructions, when executed, cause a personal computer to: provide an operating system registry containing a processor usage information of a processor; read execution times of threads during a predetermined timer time interval using one or more manager functions when the threads are executed by the processor; add execution time values for each thread that is not a system thread to get a first total; determine a quantity of usage of the processor using the first total; and update the processor usage information in the operating system registry. ### Claim 6 An article including a machine-readable storage medium containing instructions, said instructions, when executed, cause a personal computer to: provide a personal computer executable process algorithm to monitor the usage of a processor; read execution times of threads during a predetermined timer time interval using one or more manager functions when the threads are executed by the processor; add execution time values for each thread that is not a system thread to get a first total; determine a quantity of usage of the processor using the first total; and store the quantity of usage of the processor in the personal computer. ### Claim 7 An article including a machine-readable storage medium containing instructions, said instructions, when executed, cause a computer system to: read the execution times of all threads except for a system thread during a prescribed timer time interval; add the values of the execution times to obtain a first sum; subtract a second sum of previously executed and stored thread execution times from the first sum to obtain a result; and calculate a CPU usage by dividing the result by the prescribed timer time interval; and use the CPU usage in the computer system.