110 results about "Processor frequency" patented technology

A method, computer program product, and a data processing system for optimizing task throughput in a multi-processor system. A performance metric is calculated based on performance counters measuring characteristics of a task executed at one of a plurality of processor frequencies available in the multi-processor system. The characteristics measured by the performance counters indicate activity in the processor as well as memory activity. A performance metric provides a means using measured data at one available frequency to predict performance at another processor frequency available in the multi-processing system. Performance loss minimization is used to assign a particular task to a particular frequency. Additionally, the present invention provides a mechanism for priority load balancing of tasks in a manner that minimizes cumulative performance loss incurred by execution of all tasks in the system.

A device, system, and method are directed towards managing power consumption in a computer system with one or more processing units, each processing unit executing one or more threads. Threads are characterized based on a cycles per instruction (CPI) characteristic of the thread. A clock frequency of each processing unit may be configured based on the CPI of each thread assigned to the processing unit. In a system wherein higher clock frequencies consume greater amounts of power, the CPI may be used to determine a desirable clock frequency. The CPI of each thread may also be used to assign threads to each processing unit, so that threads having similar characteristics are grouped together. Techniques for assigning threads and configuring processor frequency may be combined to affect performance and power consumption. Various specifications or factors may also be considered when scheduling threads or determining processor frequencies.

A method for automatically transitioning a processor to another performance level in a demand-based system. One embodiment of the invention provides for the automatic adjustment of processor frequency while preserving system responsiveness. The performance-level policy algorithm detects increased processor utilization quickly enough that transition to a higher performance level is comparable to maximum system performance. The performance-level policy algorithm delays processor transition to a lower performance level so that quick reversals in demand do not precipitate unnecessary transitioning.

A method, apparatus, and computer usable program code for managing trace records. A set of traces is generated for a set of processors. A trace is generated in the set of traces for each processor within the set of processors. A record of the frequency change is stored in the set of traces in response to a frequency change in a processor within the set of processors. Trace records are combined in the set of traces using the record of the frequency change to determine a correct order for the records.

A method for dynamically adjusting central processing unit (CPU) frequency. Firstly, a translation table is provided between multilayer of CPU usage percentage and front-end bus operation frequency. Secondly, a current usage percentage of the CPU is obtained. Lastly, the operation frequency of the front-end bus is adjusted to a corresponding layer according to the current usage rage, so that the current usage rage is located within the range of CPU usage percentage that is defined by corresponding layer.

The invention relates to a processor frequency control method and electronic equipment. The method is applied to the electronic equipment. One or more applications can run in the electronic equipment, and the electronic equipment is provided with a processor. The method comprises the steps of detecting whether a running state change occurs to the one or more applications or not to obtain a detection result; when the detection result indicates that the running state change occurs to the one or more applications, obtaining a running state parameter corresponding to the running state change; matching processor frequency information corresponding to the running state parameter based on pre-stored corresponding relation data; regulating the working frequency of the processor based on the processor frequency information. According to the processor frequency control method and the electronic equipment, the system performance of the electronic equipment during running can be improved.

Techniques for reducing interference on radio frequencies due to processor frequencies which control a processor in wireless device are disclosed. A method for reducing interference on radio frequencies includes the steps of determining at least one radio frequency used in the wireless device and assigning an interference factor to a potential processor frequency corresponding to at least one radio frequency used in the wireless device. The method further includes the step of selecting a first processor frequency other than the potential processor frequency to avoid interference with the at least one radio frequency.

The invention provides a terminal dormant method and a terminal. The problems that a single dormant mode can not satisfy the requirements of LTE terminals of different types and the requirement for low power consumption in different application scenarios are solved. The terminal dormant method comprises the steps: whether the terminal satisfies dormant conditions or not is judged; when the terminal satisfies the dormant conditions, a dormant mode corresponding to the terminal type of the terminal is obtained; the terminal types comprise a single mode terminal, a first type multi-mode terminal and a second type multi-mode terminal, wherein the single mode terminal type corresponds to an electric mode under an advanced reduced instruction set processor, the first type multi-mode terminal corresponds to an advanced reduced instruction set processor frequency reducing mode, and the second type multi-mode terminal corresponds to an advanced reduced instruction set processor normal frequency mode; dormant processing is conducted according to the obtained dormant mode. According to the terminal dormant method and the terminal, the different dormant modes can be selected according to different terminal types, so that the dormant processing is conducted, and therefore the terminal dormant method and the terminal can satisfy the requirement for the low power consumption of the terminals of different types.

A computer implemented method, apparatus, and computer usable program code for adjusting rates at which events are generated or processed. In response to a frequency change in a processor, a frequency for the processor is identified. A rate at which samples of events generated by the processor are selected to meet a desired rate of sampling is adjusted in response to identifying the frequency change for the processor to form an adjusted rate.

The invention discloses a method and equipment for adjusting processor frequency, which are used for precisely acquiring the occupancy rate of a processor and adjusting the processor frequency. In the method provided by the embodiment of the invention, an out-band system reads the processor occupancy rate from the processor or determines the processor occupancy rate according to the specific parameter value returned from the processor after sending a command for reading a specific parameter value to the processor; the out-band system adjusts the processor frequency according to the obtained processor occupancy rate, wherein the out-band system comprises hardware operated by being independent from a user operation system in the equipment, and software operated on the hardware. After the method provided by the embodiment of the invention is adopted, the out-band system can directly obtain the processor frequency from the processor or determines the processor occupancy rate according to the specific parameter read from the processor, so the processor frequency is adjusted and the method and equipment have the advantage of high precision.

A voltage identifier (VID) sorting system is provided that optimizes processor power and operating voltage guardband at a constant processor frequency. The VID sorting system determines a voltage versus current curve for the processor. The VID sorting system then uses the voltage versus current characteristics to calculate the power for each VID to determine an acceptable range of VIDs within the maximum power criteria. The VID sorting system then tests VIDs in the range and selects a VID from the range to optimize for minimum power and/or maximum voltage guardband at a constant processor frequency.

The invention discloses a communication processing method of a full duplex mobile edge computing communication system. The full duplex mobile edge computing communication system comprises a pluralityof mobile devices and a base station with a mobile edge computing function server. A joint communication and computing resource optimization model is established and is divided into two sub-models tobe processed and solved respectively, and joint optimization allocation is carried out on two computing resources including an unloading task and processor frequency and two communication resources including sending power and a sending rate. The communication processing method provided by the invention has the advantage of remarkably reducing the energy consumption of the system on the premise ofensuring the system delay and the power constraint.

The invention discloses a method for adjusting the frequency of an embedded processor. The method comprises the following steps: measuring the idleness value of the embedded processor; when the idleness value is higher than a first threshold value, reducing the frequency of the embedded processor; and when the idleness value is lower than a second threshold value, increasing the frequency of the embedded processor. The method can ensure that not only the embedded processor can operate various tasks normally, but also the embedded processor can operate at a lower frequency through regulating the frequency, thereby reducing the power consumption of the embedded processor, and further reducing the power consumption of portable devices which adopt the embedded processor, and prolonging the working time of the portable devices. The method further discloses an embedded processor frequency regulating device, and the corresponding method and device for regulating the frequency of a mobile terminal processor.

A processor cycle time independent pipeline cache and method for pipelining data from a cache provide a processor with operand data and instructions without introducing additional latency for synchronization when processor frequency is lowered or when a reload port provides a value a cycle earlier than a read access from the cache storage. The cache incorporates a persistent data bus that synchronizes the stored data access with the pipeline and can also utilize bypass mode data available from a cache input from the lower level when data is being written to the cache.

A method and apparatus are provided that allow processing engines to be synchronized to each other with high accuracy. In one embodiment, the invention includes obtaining a processor tick counter value from a first processing engine, comparing the obtained processor tick counter value to a processor tick counter value from a second processing engine and determining a timing offset for synchronizing the first processing engine and the second processing engine using the comparison. The invention may further include obtaining a processor tick counter value by sending a request message from the second processing engine to the first processing engine, and receiving a reply from the first processing engine at the second processing engine. The processor tick counter value at the second processing engine can be determined by recording the time at which the request message is sent and by recording the time at which the reply is received. The invention can further include obtaining a processor frequency from the first processing engine, obtaining a processor frequency from the second processing engine and correcting the timing offset for any difference between the first processing engine frequency and the second processing engine frequency.

A computer implemented method, apparatus, and computer usable code for identifying processor utilization. A current event is detected. A number of elapsed cycles for a processor since a previous event are identified in response to detecting the current event. An elapsed time using the number of elapsed cycles and a current frequency of the processor is calculated, wherein the elapsed time is used to identify the processor utilization.

An embodiment of the present invention is a system and method relating to adaptive power management using hardware feedback to select optimal processor frequencies and reduce power/watt. In at least one embodiment, the present invention is intended to optimize processor frequency and power/watt usage based on the hardware feedback and processor stall behavior.

The invention discloses a mapping method for adjusting the dynamic frequency in an imbedded low-power operating system and provides a new method and technology for modeling, addressing and optimizing the mapping issue during the dynamic adjustment of the processor frequency in an embedded low-power operating system. The invention uses the method that the operating frequency of the processor maps the most energy saving frequency of the theoretic processor upwards and downwards to the actual adjustable voltage in order to serve the energy saving purpose, and meanwhile to ensure the performance requirement for the system. The invention is based on a processor frequency mapping model, through which the most energy saving frequency of the theoretic processor is mapped to the actual adjustable processor frequency. When in operation, the operating system uses dynamic frequency and voltage modulation technology to determine the theoretically most energy saving operating frequency under current performance requirement according to the performance requirement and the operating status of the processor, and maps the most energy saving frequency to the actual processor frequency in order to serve the energy saving purpose.

The invention discloses a high-precision frequency deviation compensation method for an RTC (Real-Time Clock) chip by combination of variable capacitance, and relates to a high-precision micro processor frequency deviation compensation method for the RTC chip by the combination of the variable capacitance. The high-precision frequency deviation compensation method comprises the following steps: building a mathematical model between temperature and a frequency deviation by adopting the least square method and a Lagrange interpolation algorithm through a piecewise function mode, and calculating an optimal fitting coefficient; then on the basis of the model, designing a high-precision capacitance compensation and accumulative error-based digital compensation combination frequency deviation compensation mode; and finally, completing corresponding compensation work under the control of an MCU module according to an actual temperature condition measured by a temperature sensor. The method provided by the invention can efficiently and intensively complete the frequency deviation compensation work of the RTC chip, and a design basis can be supplied to implementation of high-precision timekeeping of an intelligent electric meter in the field of electricity utilization of a power system.

The invention relates to the field of the energy-saving technology based on system software and aims at providing a method which can control the frequency of a processor by using a dynamic compiler when a program runs. The method includes the following steps: an analysis code is inserted; a hotspot of the program is dynamically determined when the program runs; the performance of the hotspot of the program is acquired; and the frequency of the processor is adjusted according to the performance of the hotspot of the program. By dynamically analyzing the performance of the program and using the frequency-adjusting function of the processor, the best energy-saving frequency of the program theory processor is mapped to an actual-adjustable voltage when the program runs so as to achieve the purpose of energy conservation and simultaneously ensure the performance requirements of the system. The invention is characterized by transparency, stability and practicability and the like.

The embodiment of the invention provides a processor frequency control method and electronic equipment, and relates to the technical field of electronics. Frequency adjusting instructions of a processor can be selectively executed according to the types of triggering events. The processor frequency control method comprises the following steps of according to one frequency adjusting instruction received by the processor, judging the type of the corresponding triggering event; according to the judging result, when the triggering event is a first-type triggering event, executing the frequency adjusting instruction. The processor frequency control method and the electronic equipment are used for controlling the frequency of the processor, and decreasing the power consumption of the electronic equipment.

The invention is used for optimizing the real-time task scheduling performance of the embedded system when it is running at low power consumption condition. It uses a real-time dynamical voltage-regulating and frequency-regulating technology and a real-time time flake cycle model to reach the real-time scheduling at low power consumption. Based on a time flake cycle task model, the invention adds a task real-time restrict to ensure the real-time capability of the task. Based on an original scheduling method, the invention adds a processor frequency controlling parameter to make the system get the lowest running frequency according to the real-time requirement of computing task.

The method of reducing power consumption of electronic equipment includes the following steps: 1. for the timer to time; 2. to judge whether to have interruption during the time, and resetting the timer and retiming if there is interruption; and 3. if there is no interruption before reaching the set time, for the system to control the frequency of the processor via the work frequency controller, and for the clock signal the crystal vibrator outputs to pass through the frequency divider and the demultiplexer and for the demultiplexer to output signal as new input clock signal of the processor.

The embodiments of the invention provide a processor frequency control method, a processor frequency control device and a terminal. The method comprises the steps of: detecting whether the current running application program is a preset application program; when the current running application program is a preset application program, acquiring a surface temperature value acquired by a temperature acquisition unit arranged at a preset position; when the surface temperature value exceeds a preset temperature threshold, determining a frequency value corresponding to the surface temperature value as a target frequency; and adjusting the working frequency of a processor to the target frequency. The working frequency of the processor in the smart terminal can be automatically adjusted according to the surface temperature of the smart terminal, so that the surface temperature can be reduced by adjusting the working frequency of the processor when the surface temperature of the smart terminal is too high, to avoid the situation of scald or user discomfort caused by too high surface temperature of the smart terminal when a user unintentionally touches the smart terminal.