CN105892615A - CPU load collecting method and device - Google Patents
CPU load collecting method and device Download PDFInfo
- Publication number
- CN105892615A CN105892615A CN201510971294.7A CN201510971294A CN105892615A CN 105892615 A CN105892615 A CN 105892615A CN 201510971294 A CN201510971294 A CN 201510971294A CN 105892615 A CN105892615 A CN 105892615A
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- Prior art keywords
- processor
- pattern
- load value
- cpu
- module
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3243—Power saving in microcontroller unit
Abstract
The invention provides a CPU (Central Processing unit) load collecting method, which comprises the following steps of taking a frequency regulating mode of a CPU; if the frequency regulating mode is an interactive mode, judging whether the CPU is at a highest frequency or not; if the CPU is at the highest frequency, generating a load value in a simulative way according to the highest frequency; and sending the load value to a CPU hot plug module. When the CPU in the interactive mode is at the highest frequency, the CPU load value collection is not performed; by using a mode of generating the load value in the simulative way, the goal of sharing the CPU load value by the CPU hot plug module and a CPU frequency regulating module is achieved; the two modules do not need the single processor load value calculation; the operation steps are simplified; the system burden is reduced; and the energy is saved.
Description
Technical field
The present invention relates to field of processors, be specifically related to a kind of central processing unit load collection method and dress
Put.
Background technology
Universal along with smart mobile phone, the performance of present smart mobile phone the most from strength to strength, mobile phone
Energy consumption also increases.Although handset capability is more and more high-end, price is more cheap, but mobile phone
The pain spot of continuation of the journey always Consumer's Experience, user denounces major part here, how to carry to intelligent machine
The cruising time of high battery also becomes study hotspot and difficult point.Revolutionary raising is not had at battery technology
Before, optimize system resource, reduce the system occupancy to resource, indirectly in just extend the continuous of battery
The boat cycle.
The central processing unit (CPU) of mobile phone is one piece of ultra-large integrated circuit, and its major function is
Data in interpreter directive and processing routine software, powerful due to CPU, energy consumption is also
The biggest.In CPU runs, during to cpu frequency adjustment and CPU hot plug, need to carry out CPU
The collection of load.It is provided with CPUfreq governor (cpu frequency adjusting module) in an operating system
With CPU hotplug (CPU hot plug template), CPUfreq governor is used for dynamically adjusting CPU
Frequency, CPU hotplug is for controlling the hot plug of multiple CPU core.
Owing to CPUfrequency driver exists several adjustable strategies governor, the most general bag
Include 6 kinds of adjustable strategies, be respectively as follows: first mode ondemand (on-demand pattern), the second pattern
Conservative (conservative mode), the 3rd pattern interactive (interactive mode), fourth mode
Powersave (energy saver mode), the 5th pattern performance (performance preference mode), the 6th pattern
Userspace (user model), wherein first mode ondemand, the second pattern conservative and
3rd pattern interactive governor needs to collect CPU loading value and carries out cpu frequency regulation
, remaining Three models need not collect cpu load value.First mode ondemand and second
The mode that pattern conservative governor collects CPU loading value is the same, interactive
Governor pattern is in order to strengthen the user interactivity of android system, at regulation and collection CPU
Loading load aspect is different, when CPU is in highest frequency, would not carry out
Acquiring of CPUloading value.
In prior art, CPUfreq governor (uses first mode ondemand, the second pattern
Conservative or the 3rd pattern interactive) and the process of CPU hotplug need to obtain CPU
Load value i.e. CPUloading, as it is shown in figure 1, due to CPUfreq governor and CPU hotplug
It is independent module, the regulation carrying out CPU loading value the most independent of each other.So, increase undoubtedly
Add system burden, consume more energy.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome CPUfreq of the prior art
Governor and CPU hotplug cpu load of collecting independently causes the defect that energy consumption is high.
The present invention provides a kind of processor load collection method, comprises the steps:
Obtain the frequency adjustment modes of processor frequencies adjusting module；
If described frequency adjustment modes is the 3rd pattern, then judge whether described processor is in high frequency
Rate, if being in highest frequency, then generates load value according to highest frequency simulation, and by described load value
It is sent to hot plug of processor module.
Preferably, also include:
If described frequency adjustment modes is first mode or the second pattern, then adjusted by processor frequencies
Module collection load value, and described load value is sent to hot plug of processor module.
Preferably, if also including, described frequency adjustment modes is the 3rd pattern, and described processor is not at
During highest frequency, collect load value by processor frequencies adjusting module, and described load value is sent
To hot plug of processor module.
Preferably, described first mode is ondemand, and the second pattern is conservative, the 3rd mould
Formula is interactive.
The present invention provides a kind of mobile terminal using described processor load collection method.
The present invention provides a kind of processor load collection device, including:
Pattern acquiring unit, for obtaining the frequency adjustment modes of processor frequencies adjusting module；
First collector unit, if being the 3rd pattern for described frequency adjustment modes, then judges described place
Whether reason device is in highest frequency, if being in highest frequency, then generates load according to highest frequency simulation
Value, and described load value is sent to hot plug of processor module.
Preferably, also include:
Second collector unit, if being first mode or the second pattern for described frequency adjustment modes, then
Collect load value by processor frequencies adjusting module, and described load value is sent to processor heat inserts
Withdrawing pattern block.
Preferably, also include the 3rd collector unit, if described frequency adjustment modes is the 3rd pattern, institute
State processor when being not at highest frequency, collect load value by processor frequencies adjusting module, and will
Described load value is sent to hot plug of processor module.
Preferably, described first mode is ondemand, and the second pattern is conservative, the 3rd mould
Formula is interactive.
Technical solution of the present invention, has the advantage that
1. the processor load collection method that the present invention provides, including the frequency adjustment modes taking processor；
If described frequency adjustment modes is the 3rd pattern interactive, then judge whether described processor is in
Altofrequency, if being in highest frequency, then generates load value according to highest frequency simulation, and by described negative
Load value is sent to hot plug of processor module.Owing under interactive pattern, processor is in high frequency
The when of rate, do not carry out the collection of cpu load value, by the way of simulation generates load value, it is achieved
Hot plug of processor module and processor frequencies adjusting module common processor load value, the two mould
Block, without individually carrying out the calculating of processor load value, simplifies operating procedure, and the system that reduces is born
Load, has saved energy.
Processor load collection method the most of the present invention, when frequency adjustment modes is first mode
When ondemand or the second pattern conservative, collection strategy can be loaded by common processor
Carry out load to collect, and this load value is sent to hot plug of processor module shares, it is achieved thereby that
Processor frequencies adjusting module and hot plug of processor module the most once load collection, simplify behaviour
Make step, save energy consumption.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the flow chart that in prior art, processor load is collected
Fig. 2 is the overall flow figure of processor load collection method in the embodiment of the present invention 1；
Fig. 3 is the collection process flow diagram flow chart of processor load collection method in the embodiment of the present invention 1；
Fig. 4 is a structured flowchart of processor load collection device in the embodiment of the present invention 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
In describing the invention, it should be noted that term " first ", " second ", " the 3rd "
It is only used for describing purpose, and it is not intended that indicate or hint relative importance.Additionally, retouched below
As long as technical characteristic involved in the difference embodiment of the present invention stated just does not constitutes conflict each other
Can be combined with each other.
Embodiment 1
The present embodiment provides a kind of processor load collection method, can be used for smart mobile phone or other intelligence
In the operating system of energy terminal unit, its objective is so that processor frequencies adjusting module (CPUfreq
Governor) share one load collection strategy with hot plug of processor module (CPU hotplug).
Processor load collection method in the present embodiment comprises the steps, as shown in Figures 2 and 3:
S1, the frequency adjustment modes of acquisition processor frequencies adjusting module.
Owing to CPUfrequency driver exists several adjustable strategies governor, the most general bag
Include 6 kinds of adjustable strategies, be respectively as follows: first mode ondemand, the second pattern conservative,
3rd pattern interactive, fourth mode powersave, the 5th pattern performance, the 6th mould
Formula userspace, wherein first mode ondemand, the second pattern conservative and the 3rd pattern
Interactive governor needs to collect CPU loading value and carries out cpu frequency regulation, remaining
Three models (fourth mode powersave, the 5th pattern performance, the 6th pattern userspace)
Need not collect cpu load value, the most do not exist and share loading value with CPUhotplug module
, therefore the present embodiment need not consider.First mode ondemand and the second pattern conservative
Governor collect CPU loading mode the same, the 3rd pattern interactive governor in order to
Strengthen the user interactivity of android system, be to have in terms of regulation and collection CPU loading load
Different.So during processing collection CPU loading, system to be distinguished is used is first
Pattern ondemand, the second pattern conservative governor or the 3rd pattern interactive
governor。
CPUfrequency driver loads in android system start-up course, CPUhotplug
Driver is also to load in this stage, the order that both do not load, but for the starting up speed of system,
The startup time of CPUhotplug driver should be postponed.
S2, when two driver loadeds, and CPUhotplug driver delay start time-out
After, both carry out adopting of CPU loading for the pattern of different CPUfrequency governor
Collection operation.
When system uses interactive governor chirping strategies when, due to interactive
Governor is for some mutual characteristics, such as when CPU is in highest frequency when, and would not
Carry out the collection of CPU loading, and after being to wait for idle, carry out the collection of loading, if also
It is the method gathering loading with ondemand governor, the receipts that CPUhotplug can not be real-time
Collection is to CPU loading value.The processing method now used be for: if described frequency adjustment modes is
Three patterns interactive, then judge whether described processor is in highest frequency, if being in highest frequency,
Then generating load value according to highest frequency simulation, the load value that general simulation generates is chosen as
95%-100%, and described load value is sent to hot plug of processor module.If described frequency adjusts mould
Formula is the 3rd pattern interactive, when described processor is not at highest frequency, passes through processor frequencies
Adjusting module collects load value, now with first mode ondemand and the second pattern conservative
The load collection mode of governor is identical, and described load value is sent to hot plug of processor module
CPUhotplug.Owing to, the when that under interactive pattern, processor being in highest frequency, not carrying out
The collection of cpu load value, by the way of simulation generates load value, it is achieved that hot plug of processor mould
Block and processor frequencies adjusting module common processor load value, the two module is without individually carrying out
The calculating of processor load value, simplifies operating procedure, reduces system burden, has saved energy.
If described frequency adjustment modes is first mode ondemand or the second pattern conservative,
Then collect load value by processor frequencies adjusting module, and described load value is sent to processor heat
Plug-in module.When frequency adjustment modes is first mode ondemand and the second pattern conservative
The when of governor, both can share CPU loading acquisition strategies, and concrete acquisition strategies is:
The percentage ratio of total time shared by the busy of the CPU in collection certain time, such as busy 5 milliseconds, free time
5 milliseconds, then the CPUloading value in 10 milliseconds is 50%.It is achieved thereby that processor frequencies is adjusted
Mould preparation block and hot plug of processor module the most once load collection, simplify operating procedure, save
Energy consumption.
As long as system is in the operation phase, CPUfreq and CPUhotplug driver both coexists
, proceed as described above circular treatment.
In order to reduce the waste of system resource so that processor frequencies adjusting module and hot plug of processor
The CPU loading numerical value collection of module merges process, thus reduces CPU and gather and calculate
The time of loading numerical value, reduce energy consumption.
The present embodiment also provides for a kind of mobile terminal device made in aforementioned manners, such as mobile phone, ipad
Deng.
Embodiment 2
A kind of processor load collection device of offer in the present embodiment, as shown in Figure 4, including:
Pattern acquiring unit 01, for obtaining the frequency adjustment modes of processor frequencies adjusting module；
First collector unit 02, if being the 3rd pattern for described frequency adjustment modes, then judges described
Whether processor is in highest frequency, if being in highest frequency, then generates negative according to highest frequency simulation
Load value, and described load value is sent to hot plug of processor module.
Further, also include:
Second collector unit 03, if being first mode or the second pattern for described frequency adjustment modes,
Then collect load value by processor frequencies adjusting module, and described load value is sent to processor heat
Plug-in module.
Further, also include the 3rd collector unit 04, if described frequency adjustment modes is the 3rd pattern,
When described processor is not at highest frequency, collect load value by processor frequencies adjusting module, and
Described load value is sent to hot plug of processor module.
Wherein, described first mode is ondemand, and the second pattern is conservative, the 3rd pattern
For interactive.
Processor load collection device in the present embodiment card, it is achieved that hot plug of processor module and place
Reason device frequency regulation block common processor load value, the two module is without individually carrying out processor
The calculating of load value, simplifies operating procedure, reduces system burden, has saved energy.
Those skilled in the art it should be appreciated that embodiments of the invention can be provided as method, system,
Or computer program.Therefore, the present invention can use complete hardware embodiment, complete software to implement
Example or the form of the embodiment in terms of combining software and hardware.And, the present invention can use at one
Or multiple wherein include computer usable program code computer-usable storage medium (include but not
It is limited to disk memory, CD-ROM, optical memory etc.) shape of the upper computer program implemented
Formula.
The present invention is with reference to method, equipment (system) and computer program according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that stream can be realized by computer program instructions
In each flow process in journey figure and/or block diagram and/or square frame and flow chart and/or block diagram
Flow process and/or the combination of square frame.These computer program instructions can be provided to general purpose computer, specially
With the processor of computer, Embedded Processor or other programmable data processing device to produce one
Machine so that the instruction performed by the processor of computer or other programmable data processing device is produced
Raw for realizing one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple side
The device of the function specified in frame.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process
In the computer-readable memory that equipment works in a specific way so that be stored in this computer-readable and deposit
Instruction in reservoir produces the manufacture including command device, and this command device realizes flow chart one
The function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded into computer or other programmable data processing device
On so that on computer or other programmable devices, perform sequence of operations step to produce computer
The process realized, thus the instruction performed on computer or other programmable devices provides and is used for realizing
One flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame are specified
The step of function.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (9)
1. a processor load collection method, it is characterised in that comprise the steps:
Obtain the frequency adjustment modes of processor frequencies adjusting module；
If described frequency adjustment modes is the 3rd pattern, then judge whether described processor is in high frequency
Rate, if being in highest frequency, then generates load value according to highest frequency simulation, and by described load value
It is sent to hot plug of processor module.
Method the most according to claim 1, it is characterised in that also include:
If described frequency adjustment modes is first mode or the second pattern, then adjusted by processor frequencies
Module collection load value, and described load value is sent to hot plug of processor module.
Method the most according to claim 1, it is characterised in that if described frequency adjustment modes is
3rd pattern, when described processor is not at highest frequency, is collected by processor frequencies adjusting module
Load value, and described load value is sent to hot plug of processor module.
Method the most according to claim 1, it is characterised in that described first mode is
Ondemand, the second pattern is conservative, and the 3rd pattern is interactive.
5. the mobile terminal using the arbitrary described processor load collection method of claim 1-4.
6. a processor load collection device, it is characterised in that including:
Pattern acquiring unit, for obtaining the frequency adjustment modes of processor frequencies adjusting module；
First collector unit, if being the 3rd pattern for described frequency adjustment modes, then judges described place
Whether reason device is in highest frequency, if being in highest frequency, then generates load according to highest frequency simulation
Value, and described load value is sent to hot plug of processor module.
Device the most according to claim 6, it is characterised in that also include:
Second collector unit, if being first mode or the second pattern for described frequency adjustment modes, then
Collect load value by processor frequencies adjusting module, and described load value is sent to processor heat inserts
Withdrawing pattern block.
8. according to the device described in claim 6 or 7, it is characterised in that also include that the 3rd collection is single
Unit, if described frequency adjustment modes is the 3rd pattern, when described processor is not at highest frequency, logical
Cross processor frequencies adjusting module and collect load value, and described load value is sent to hot plug of processor
Module.
Device the most according to claim 8, it is characterised in that described first mode is
Ondemand, the second pattern is conservative, and the 3rd pattern is interactive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510971294.7A CN105892615A (en) | 2015-12-22 | 2015-12-22 | CPU load collecting method and device |
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|---|---|---|---|
| CN201510971294.7A CN105892615A (en) | 2015-12-22 | 2015-12-22 | CPU load collecting method and device |
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| CN105892615A true CN105892615A (en) | 2016-08-24 |
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| CN201510971294.7A Pending CN105892615A (en) | 2015-12-22 | 2015-12-22 | CPU load collecting method and device |
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| CN110442226A (en) * | 2019-08-09 | 2019-11-12 | 上海工程技术大学 | A kind of the particular task terminal handler frequency modulation method and device of task based access control type |
| CN111324198A (en) * | 2020-03-18 | 2020-06-23 | 深圳市亿晟科技有限公司 | Method for dynamically adjusting frequency and voltage of android device according to load |
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Application publication date: 20160824 |