CN107463441B - Thread quantity control method and equipment - Google Patents
Thread quantity control method and equipment Download PDFInfo
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- CN107463441B CN107463441B CN201710525715.2A CN201710525715A CN107463441B CN 107463441 B CN107463441 B CN 107463441B CN 201710525715 A CN201710525715 A CN 201710525715A CN 107463441 B CN107463441 B CN 107463441B
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- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5016—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals the resource being the memory
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
- G06F9/505—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering the load
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Abstract
The invention provides a thread quantity control method and equipment, and belongs to the technical field of computers. The thread quantity control method and the equipment provided by the embodiment of the invention can obtain the current system environment parameters, then determine the maximum thread quantity according to the current system environment parameters, and can realize the real-time adjustment of the maximum thread quantity when the current system environment parameters change, namely, the running state of the system changes, thereby ensuring that the system resources can be reasonably utilized to the maximum extent, ensuring that the utilization rate of the system resources can be kept optimal, simultaneously avoiding the problem of unstable system caused by the overlarge number of established threads, and ensuring the stability of the system.
Description
Technical Field
The invention belongs to the technical field of computers, and particularly relates to a thread quantity control method and equipment.
Background
In a computer system, various system resources are used for task processing, when a task needs to be processed, the system receives a request for accessing a specified system resource, establishes a thread for the request, and then processes the request by using the established thread. In order to fully utilize system resources, a multi-thread mode is usually adopted to implement parallel processing of multiple requests. However, the too high number of threads may cause too much resource consumption in unnecessary task operations due to resource contention, thread switching, etc., so that the system may be unstable due to too much resource consumption, which may affect the efficiency of processing the request. Therefore, the number of threads needs to be controlled to optimize resource utilization.
In the prior art, a maximum thread number is usually set when a system is started, and the currently established thread number is controlled not to be greater than the preset maximum thread number, so as to realize thread control.
However, when the system has a large operation load, if the threads are continuously established according to the maximum number of threads preset in the prior art, the number of established threads may be too large, which may cause instability of the system, and further affect the resource utilization rate of the system.
Disclosure of Invention
The invention provides a method and equipment for controlling the number of threads, which are used for solving the problem that the resource utilization rate of a system is influenced due to the fact that the system is unstable due to the fact that the number of the threads is too large.
According to a first aspect of the present invention, there is provided a thread quantity control method, the method comprising:
acquiring a current system environment parameter value;
matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number; the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number; the current maximum thread number is the maximum thread number that the system can operate in the current state.
Optionally, the current system environment parameter values include: the current CPU occupancy value, the current packet loss value and the current CPU temperature value;
the step of matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number comprises:
respectively matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number corresponding to the current CPU occupancy value, a second thread number corresponding to the current packet loss value and a third thread number corresponding to the current CPU temperature value;
and determining the minimum thread number in the first thread number, the second thread number and the third thread number as the current maximum thread number.
Optionally, the method further includes:
when the system is started, the preset maximum thread number is determined according to the configuration file and is used as the current maximum thread number.
Optionally, the step of determining the preset maximum thread number according to the configuration file includes:
acquiring an initial thread number in an initial configuration sub-file in a configuration file;
when the system is started for the first time, determining the initial thread number as a preset maximum thread number;
and when the system is not started for the first time, extracting the thread number with the highest utilization rate in the intermediate configuration sub-file in the configuration file, and determining the thread number with the highest utilization rate as the preset maximum thread number.
Optionally, the method further includes:
when a task is to be established in the system, judging whether the current thread number is smaller than the current maximum thread number;
and if the current thread number is less than the current maximum thread number, establishing a corresponding thread for the task to be established.
According to a second aspect of the present invention, there is provided a thread quantity control apparatus comprising:
the acquisition module is used for acquiring the environmental parameter value of the current system;
the first determining module is used for matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number; the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number; the current maximum thread number is the maximum thread number that the system can operate in the current state.
Optionally, the first determining module includes:
the matching sub-module is used for respectively matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number corresponding to the current CPU occupancy value, a second thread number corresponding to the current packet loss value and a third thread number corresponding to the current CPU temperature value;
and the first determining submodule is used for determining the minimum thread number in the first thread number, the second thread number and the third thread number as the current maximum thread number.
Optionally, the apparatus further comprises:
and the second determining module is used for determining the preset maximum thread number according to the configuration file when the system is started, and the preset maximum thread number is used as the current maximum thread number.
Optionally, the second determining module includes:
the obtaining submodule is used for obtaining the initial thread number in the initial configuration subfile in the configuration file;
the second determining submodule is used for determining the initial thread number as a preset maximum thread number when the system is started for the first time;
and the third determining submodule is used for extracting the highest-utilization-rate thread number in the intermediate configuration subfile in the configuration file when the system is not started for the first time, and determining the highest-utilization-rate thread number as the preset maximum thread number.
Optionally, the apparatus further comprises:
the judging module is used for judging whether the current thread number is smaller than the current maximum thread number when a task is to be built in the system;
and the establishing module is used for establishing a corresponding thread aiming at the task to be established if the current thread number is less than the current maximum thread number.
Aiming at the prior art, the invention has the following advantages:
the thread quantity control method and the equipment provided by the invention can acquire the current system environment parameters, then determine the maximum thread quantity according to the current system environment parameters, and can realize the real-time adjustment of the maximum thread quantity when the current system environment parameters change, namely, the running state of the system changes, thereby ensuring that the system resources can be reasonably utilized to the maximum extent, ensuring that the utilization rate of the system resources can be kept optimal, simultaneously avoiding the problem of unstable system caused by the overlarge number of established threads, and ensuring the stability of the system.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flowchart illustrating steps of a thread count control method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of another thread count control method according to a second embodiment of the present invention;
fig. 3 is a block diagram of a thread quantity control device according to a third embodiment of the present invention;
fig. 4 is a block diagram of another thread quantity control apparatus according to a fourth embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example one
Fig. 1 is a flowchart illustrating steps of a thread quantity control method according to an embodiment of the present invention, as shown in fig. 1, the method may include:
The current system environment parameter value in the embodiment of the invention can reflect the operation condition of the current system. In the embodiment of the invention, the current system environment parameter value can be periodically detected, and the current maximum thread number is further determined according to the current system environment parameter value by acquiring the current system environment parameter value. Wherein the current system environment parameter values may include: a current Central Processing Unit (CPU) occupancy value, a current packet loss value, and a current CPU temperature value. The CPU occupancy rate refers to CPU resources occupied by the system in operation, and represents the current operation condition of the system, and the higher the CPU occupancy rate is, the more CPU resources occupied by the current system in operation are indicated, otherwise, the less CPU occupancy rate is; the packet loss rate is the ratio of the number of lost packets to the number of transmitted packets when the system transmits data. In practical applications, the current system environment parameter value may further include other parameter values, such as memory occupancy rate, which is not limited in the embodiment of the present invention.
And 102, matching the current system environment parameter values in a preset thread mapping table, and determining the current maximum thread number.
The current maximum thread number is the maximum thread number which can be operated by the system in the current state, and the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number.
Because the preset thread mapping table represents the corresponding relationship between the system environment parameter value and the maximum thread number, the current system environment parameter value can be matched in the mapping table to determine the current maximum thread number corresponding to the current system environment parameter.
In summary, the thread quantity control method provided in the embodiment of the present invention may obtain the current system environment parameter, and then determine the maximum thread quantity according to the current system environment parameter, when the current system environment parameter changes, that is, when the running state of the system changes, the maximum thread quantity may be adjusted in real time, thereby ensuring that the system resources may be utilized reasonably to the maximum extent, so that the utilization rate of the system resources may be kept optimal, and simultaneously avoiding the problem of system instability caused by the too large number of established threads, and ensuring the stability of the system.
Example two
Fig. 2 is a flowchart illustrating steps of another thread quantity control method according to a second embodiment of the present invention, as shown in fig. 2, the method may include:
The system in the embodiment of the invention is a computer system, wherein the computer system consists of two parts, namely computer hardware and software. The hardware part may include central processor, memory, peripheral equipment, etc. and the software part may be the running program and corresponding file of the computer. The computer system can receive and store information, quickly calculate and judge according to programs, and output processing results. The configuration file is typically stored on a local hard drive of the system, and may typically include a collection of settings and files for the user to use the system.
Since each environmental parameter of the system is 0 when the system is just started, the maximum thread number cannot be determined according to the current environmental parameter value of the system. Therefore, the preset maximum thread number needs to be determined according to the configuration file to serve as the current maximum thread number. The problem that the current maximum thread number cannot be determined according to the current system environment parameter value when the system is just started is solved, and the stability of the system is ensured.
Specifically, step 201 may include:
step 2011, obtain the initial thread number in the initial configuration subfile in the configuration file.
The configuration file may include an initial configuration subfile, which may be a file preset by the system in a development stage, and may be represented by "config _ default. The initial configuration subfile stores a preset initial thread number, which may be a reasonable value that a developer determines to ensure that the system can bear according to the hardware configuration of the system.
Step 2012, when the system is started up for the first time, the initial thread number is determined as the preset maximum thread number.
In the embodiment of the invention, the system is started for the first time, which means that the system is started for the first time and runs, and at the moment, the configuration file only comprises the initial configuration sub-file, so that the initial thread number in the initial configuration sub-file can be extracted and determined as the preset maximum thread number.
For example, assume that the contents of the initial configuration subfile are:
# default thread Start number
default_thread_count＝5；
It can be seen that the preset initial thread number is 5, and at this time, 5 may be determined as the preset maximum thread number.
And 2013, when the system is not started for the first time, extracting the highest occupancy rate thread number in the intermediate configuration subfiles in the configuration files, and determining the highest occupancy rate thread number as a preset maximum thread number.
In the embodiment of the invention, when the system is not started for the first time, the system is operated before, and an intermediate configuration subfile is generated in the operation process of the system generally. Therefore, when the system is not booted for the first time, the configuration file of the system includes an intermediate configuration subfile generated in the previous running process, which may be denoted by "config _ run. The intermediate configuration subfile in the embodiment of the present invention may include historical data of the maximum number of threads used in the previous system operation process, and the number of threads with the highest occupancy rate in the previous system operation process may be determined according to the historical data. At this time, the occupancy-rate-highest thread number may be determined as a preset maximum thread number. In the embodiment of the invention, the maximum occupancy rate thread number is determined as the preset maximum thread number, and the maximum occupancy rate thread number is determined as the preset maximum thread number because the maximum occupancy rate thread number is more consistent with the actual situation, so that the set maximum thread number is more reasonable when the system is just started to operate, and the normal operation and the stability of the system are further ensured.
For example, assume that the contents of the intermediate configuration subfile are:
thread number used the most
max_rate_thread_count＝3；
Number of # threads 5 detected times
thread_count_5＝2；
Number of # threads 4 detected times
thread_count_4＝14；
Number of # threads 3 detected times
thread_count_3＝35；
Number of # threads 2 detected times
thread_count_2＝32；
Number of times # thread number 1 was detected
thread_count_1＝20；
It can be seen that the number of times of the thread number 3 is used is the largest, and the thread number with the highest occupancy rate can be determined to be 3, and at this time, 3 can be determined to be the preset maximum thread number.
For example, when obtaining the current CPU utilization value, the CPU utilization value may be determined according to the time occupied by the current thread of the system. Assume that the system currently includes two threads, thread a and thread B. In the current period, the thread A occupies 10 milliseconds (ms), the thread B occupies 30ms and is idle for 60ms, and then the operations are repeated, wherein the thread A occupies 10ms, the thread B occupies 30ms and is idle for 60 ms; then the current CPU utilization value may be determined to be 40%; when the current packet loss rate is obtained, the rate of data packets sent by a data packet station which are lost when data are sent in the current period can be detected, and if 100 data packets are sent in the current period and 2 data packets are lost, the current packet loss rate value can be determined to be 2%; when the current CPU temperature is obtained, the current temperature of the CPU can be detected through a temperature sensor in the system, and then the detected temperature is determined as the current CPU temperature value.
In the embodiment of the present invention, the current system environment parameter value may be obtained periodically, for example, the current system environment parameter value may be obtained every 5 minutes, before obtaining the parameter value, whether the system currently has an established thread may be detected, and if yes, the current system environment parameter value may be obtained; if not, wait for the next cycle. In the embodiment of the present invention, the specific time of the period is not limited, and may be set according to actual requirements when the period is specifically implemented. And a reasonable period time is set, so that the problem that the working of the system is influenced by frequently replacing the current maximum thread number can be avoided. After the current system environment parameter value is obtained, the current system environment parameter value may be written into an intermediate configuration subfile of the system. For example, assume that the obtained current system environment parameter values are: the CPU occupancy value is 35%, the current packet loss value is 5%, and the current CPU temperature value is 55 degrees celsius (° c). The above data may be written into the intermediate configuration subfile "config _ run.
And 203, matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number.
For example, the current system environment parameter value obtained in the step 202 may be read from the intermediate configuration subfile "config _ run.ini" of the system, and then the read current system environment parameter value is used to perform matching in the preset thread map, so as to determine the current maximum thread number.
Specifically, step 203 may include:
step 2031, matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number corresponding to the current CPU occupancy value, a second thread number corresponding to the current packet loss value and a third thread number corresponding to the current CPU temperature value.
The matching sequence is not limited in the embodiment of the present invention, for example, when matching is performed, the current CPU occupancy value may be first matched in a preset thread mapping table, a first thread number corresponding to the current CPU occupancy is determined, then the current packet loss value is matched in the preset thread mapping table, a second thread number corresponding to the current packet loss value is determined, and finally the current CPU temperature value is matched in the preset thread mapping table, and a third thread number corresponding to the current CPU temperature value is determined. Or matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number, a second thread number and a third thread number corresponding to the three parameter values respectively.
For example, assume that the preset thread mapping table is as follows:
| maximum number of threads | CPU occupancy (%) | Packet loss ratio (%) | CPU temperature (. degree.C.) |
| 5 | 0-19 | 0-9 | 0-39 |
| 4 | 20-29 | 10-19 | 40-59 |
| 3 | 30-39 | 20-39 | 60-69 |
| 2 | 40-69 | 40-84 | 70-74 |
| 1 | 70-89 | 85-94 | 75-79 |
| 0 | 90-100 | 95-100 | 80-85 |
Preset thread mapping table
Assuming that the CPU occupancy rate is located in the column in the table, each row from top to bottom represents a first parameter interval of the CPU occupancy rate, a second parameter interval of the CPU occupancy rate, a third parameter interval of the CPU occupancy rate, a fourth parameter interval of the CPU occupancy rate and a fifth parameter interval of the CPU occupancy rate respectively; by analogy, each row of the columns where the packet loss rates are located from top to bottom respectively represents a first parameter interval of the packet loss rate value, a second parameter interval of the packet loss rate value, a third parameter interval of the packet loss rate value, a fourth parameter interval of the packet loss rate value and a fifth parameter interval of the packet loss rate value; and each row of the CPU temperature respectively represents a first parameter interval of the CPU temperature value, a second parameter interval of the CPU temperature value, a third parameter interval of the CPU temperature value, a fourth parameter interval of the CPU temperature value and a fifth parameter interval of the CPU temperature value from top to bottom. As can be seen from the above table, each parameter interval corresponds to a maximum number of threads.
Specifically, during matching, a parameter interval to which the current system environment parameter value belongs may be determined in a preset thread mapping table, and then a maximum thread number corresponding to the parameter interval to which the current system environment parameter value belongs may be determined as the thread number corresponding to the current system environment parameter value.
With the current system environment parameter values obtained in step 202 above: the current CPU occupancy rate is 35%, the current packet loss is 5%, and the current CPU temperature is 55 ℃, for example, by matching the CPU occupancy rate of 35% in the table, it is determined that the parameter interval to which the current CPU occupancy rate value belongs is within a third parameter interval "30-39" of the CPU occupancy rate value, and the maximum thread number 3 corresponding to the third parameter interval of the CPU occupancy rate value can be determined as the first thread number corresponding to the current CPU occupancy rate value; by matching the packet loss rate of 5% in the table, it is determined that the parameter interval to which the current packet loss rate value belongs is within a first parameter interval "0-9" of the packet loss rate value, and the maximum thread number 5 corresponding to the first parameter interval of the packet loss rate value can be determined as the second thread number corresponding to the current packet loss rate value; the CPU temperature is matched in the table at 55 ℃, the parameter interval to which the current CPU temperature value belongs is determined to be within the second parameter interval '40-59' of the CPU temperature value, and the maximum thread number 4 corresponding to the second parameter interval of the CPU temperature value can be determined to be the third thread number corresponding to the current CPU temperature value.
Step 2032, determining the minimum thread number of the first thread number, the second thread number and the third thread number as the current maximum thread number.
In the embodiment of the invention, the minimum thread number in the first thread number, the second thread number and the third thread number is determined as the current maximum thread number, so that the system can be ensured to stably run when running by the current maximum thread number. For example, if the first thread number determined according to the current CPU occupancy value is 3, the second thread number determined according to the current packet loss value is 4, the third thread number determined according to the current CPU temperature value is 5, and if the minimum thread number is not selected as the current maximum thread number, and if 5 is determined as the current maximum thread number, when the system runs with the maximum thread number of 5, the CPU occupancy and the packet loss rate may be higher, and a system is jammed, which may cause the system to be more unstable. Therefore, the minimum thread number, i.e. the first thread number 3 is determined as the current maximum thread number, so that the system can be ensured to keep a stable state when running at the maximum thread number 3.
The above process of determining the current maximum number of threads according to the current system environment parameters can be expressed in the form of a formula:
M＝min(mach(′cpu′，cpu_value)mach(′PacketLossRate′，plr_value)，mach(′tem perature′，tmp_value))；
wherein "M" represents the current maximum number of threads; min (, denotes taking the minimum function, and mach (, is the matching function); "mach (' CPU ', CPU _ value) ' indicates that the current CPU occupancy value is matched in a preset thread mapping table, and a corresponding first thread number is determined; "map ('PacketLossRate', plr _ value)" indicates that the current packet loss rate value is matched in the preset thread mapping table, and determines the corresponding second thread number; "map (" temperature, "tmp _ value)" indicates that the current CPU temperature value is matched in the preset thread mapping table, and the corresponding third thread number is determined.
It should be noted that, in the embodiment of the present invention, after the current maximum thread number is determined, the current maximum thread number may be recorded in the intermediate configuration sub-file, so that the thread number with the highest occupancy rate may be counted under the recording of the current maximum thread number determined in each cycle, and is used as a data basis of the initial maximum thread number determined when the system is started.
And step 204, when the system has tasks to be built, judging whether the current thread number is smaller than the current maximum thread number.
The current thread number represents the thread number which is established by the system at present, and the current maximum thread number represents the thread number which can be established by the system at most at present. If the current thread number is less than the current maximum thread number, the system can also carry more threads at the moment. For example, the system may periodically detect whether a task is to be set up in the system, for example, the period duration may be 2 minutes. If the task to be built is detected, whether the current thread number is smaller than the current maximum thread number can be further judged; and if the task to be built is not detected, waiting for the next period.
And step 205, if the current thread number is smaller than the current maximum thread number, establishing a corresponding thread for the task to be established.
For example, suppose that there is task a to be created in the system, the current thread number is 3, and the current maximum thread number is 4. Because the current thread number 3 is less than the current maximum thread number 4, a corresponding new thread can be established for the task a to be established. In the embodiment of the invention, when the corresponding thread is established for the task to be established, the size relation between the current thread number and the current maximum thread number is compared, and whether a new thread is established or not is further determined. Therefore, the current thread number of the system can be ensured not to exceed the maximum thread number, and the stable operation of the system is ensured. In practical application, the embodiment of the invention can be realized by utilizing C development language based on a raspberry host computer. Therefore, the realization cost is low, the codes are relatively simplified, and the execution efficiency is high. Specifically, other types of computers may be used, for example, a computer based on a linux system or a computer based on a windows system, which is not limited by the embodiment of the present invention.
In summary, in the method for controlling thread count according to the second embodiment of the present invention, when the system is started, the preset maximum thread count may be determined according to the configuration file, so as to serve as the current maximum thread count. The problem that the current maximum thread number cannot be determined according to the current system environment parameter value when the system is just started is solved, and the stability of the system is ensured; meanwhile, in the operation process, the current system environment parameters can be obtained, then the maximum thread number is determined according to the current system environment parameters, when the current system environment parameters change, namely the operation state of the system changes, the real-time adjustment of the maximum thread number can be realized, the system resources can be reasonably utilized to the maximum extent, the utilization rate of the system resources can be kept optimal, the problem that the system is unstable due to the fact that the number of the established threads is too large is avoided, and the stability of the system is ensured; when a corresponding thread is established for a task to be established, the size relationship between the current thread number and the current maximum thread number is compared, and whether a new thread is established or not is determined. Therefore, the current thread number of the system can be ensured not to exceed the maximum thread number, and the stable operation of the system is further ensured.
EXAMPLE III
Fig. 3 is a block diagram of a thread quantity control apparatus according to a third embodiment of the present invention, and as shown in fig. 3, the apparatus 30 may include:
an obtaining module 301, configured to obtain a current system environment parameter value.
A first determining module 302, configured to match the current system environment parameter value in a preset thread mapping table, and determine a current maximum thread number; the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number; the current maximum thread number is the maximum thread number that the system can operate in the current state.
In summary, the thread quantity control device provided in the third embodiment of the present invention may obtain the current system environment parameter, and then determine the maximum thread quantity according to the current system environment parameter, when the current system environment parameter changes, that is, when the running state of the system changes, the maximum thread quantity may be adjusted in real time, which ensures that the system resources may be utilized reasonably to the maximum extent, so that the utilization rate of the system resources may be kept optimal, and simultaneously, the problem of system instability due to the too large number of established threads is avoided, and the stability of the system is ensured.
Example four
Fig. 4 is a block diagram of another thread quantity control apparatus according to a fourth embodiment of the present invention, and as shown in fig. 4, the apparatus 40 may include:
an obtaining module 401, configured to obtain a current system environment parameter value.
A first determining module 402, configured to match the current system environment parameter value in a preset thread mapping table, and determine a current maximum thread number; the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number; the current maximum thread number is the maximum thread number that the system can operate in the current state.
The second determining module 403 is configured to determine, according to the configuration file, a preset maximum thread count as a current maximum thread count when the system is powered on.
The determining module 404 is configured to determine whether the current thread count is smaller than the current maximum thread count when a task is to be created in the system.
An establishing module 405, configured to establish a corresponding thread for the task to be established if the current thread number is smaller than the current maximum thread number.
Optionally, the first determining module 402 may include:
and the matching sub-module is used for respectively matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number corresponding to the current CPU occupancy value, a second thread number corresponding to the current packet loss value and a third thread number corresponding to the current CPU temperature value.
And the first determining submodule is used for determining the minimum thread number in the first thread number, the second thread number and the third thread number as the current maximum thread number.
Optionally, the second determining module 403 may include:
and the obtaining submodule is used for obtaining the initial thread number in the initial configuration subfile in the configuration file.
And the second determining submodule is used for determining the initial thread number as the preset maximum thread number when the system is started for the first time.
And the third determining submodule is used for extracting the highest-utilization-rate thread number in the intermediate configuration subfile in the configuration file when the system is not started for the first time, and determining the highest-utilization-rate thread number as the preset maximum thread number.
In summary, the thread count control device according to the fourth embodiment of the present invention may determine the preset maximum thread count according to the configuration file when the system is started, so as to serve as the current maximum thread count. The problem that the current maximum thread number cannot be determined according to the current system environment parameter value when the system is just started is solved, and the stability of the system is ensured; meanwhile, in the operation process, the current system environment parameters can be obtained, then the maximum thread number is determined according to the current system environment parameters, when the current system environment parameters change, namely the operation state of the system changes, the real-time adjustment of the maximum thread number can be realized, the system resources can be reasonably utilized to the maximum extent, the utilization rate of the system resources can be kept optimal, the problem that the system is unstable due to the fact that the number of the established threads is too large is avoided, and the stability of the system is ensured; when a corresponding thread is established for a task to be established, the size relationship between the current thread number and the current maximum thread number is compared, and whether a new thread is established or not is determined. Therefore, the current thread number of the system can be ensured not to exceed the maximum thread number, and the stable operation of the system is further ensured.
For the above device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As is readily imaginable to the person skilled in the art: any combination of the above embodiments is possible, and thus any combination between the above embodiments is an embodiment of the present invention, but the present disclosure is not necessarily detailed herein for reasons of space.
The thread quantity control methods provided herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The structure required to construct a system incorporating aspects of the present invention will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of the method of identifying background music in video according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (6)
1. A method for thread count control, the method comprising:
acquiring a current system environment parameter value;
matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number; the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number; the current maximum thread number is the maximum thread number which can be operated by the system in the current state;
when a task is to be established in the system, judging whether the current thread number is smaller than the current maximum thread number;
if the current thread number is smaller than the current maximum thread number, establishing a corresponding thread for the task to be established;
wherein the current system environment parameter values include: the current CPU occupancy value, the current packet loss value and the current CPU temperature value;
the step of matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number comprises:
respectively matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number corresponding to the current CPU occupancy value, a second thread number corresponding to the current packet loss value and a third thread number corresponding to the current CPU temperature value;
and determining the minimum thread number in the first thread number, the second thread number and the third thread number as the current maximum thread number.
2. The method of claim 1, further comprising:
when the system is started, the preset maximum thread number is determined according to the configuration file and is used as the current maximum thread number.
3. The method of claim 2, wherein the step of determining the preset maximum number of threads according to the configuration file comprises:
acquiring an initial thread number in an initial configuration sub-file in a configuration file;
when the system is started for the first time, determining the initial thread number as a preset maximum thread number;
and when the system is not started for the first time, extracting the thread number with the highest utilization rate in the intermediate configuration sub-file in the configuration file, and determining the thread number with the highest utilization rate as the preset maximum thread number.
4. A thread count control apparatus, characterized in that the apparatus comprises:
the acquisition module is used for acquiring the environmental parameter value of the current system;
the first determining module is used for matching the current system environment parameter values in a preset thread mapping table to determine the current maximum thread number; the preset thread mapping table is used for representing the corresponding relation between the system environment parameter value and the maximum thread number; the current maximum thread number is the maximum thread number which can be operated by the system in the current state;
wherein the first determining module comprises:
the matching sub-module is used for respectively matching the current CPU occupancy value, the current packet loss value and the current CPU temperature value in a preset thread mapping table, and determining a first thread number corresponding to the current CPU occupancy value, a second thread number corresponding to the current packet loss value and a third thread number corresponding to the current CPU temperature value;
the first determining submodule is used for determining the minimum thread number in the first thread number, the second thread number and the third thread number as the current maximum thread number;
the judging module is used for judging whether the current thread number is smaller than the current maximum thread number when a task is to be built in the system;
and the establishing module is used for establishing a corresponding thread aiming at the task to be established if the current thread number is less than the current maximum thread number.
5. The apparatus of claim 4, further comprising:
and the second determining module is used for determining the preset maximum thread number according to the configuration file when the system is started, and the preset maximum thread number is used as the current maximum thread number.
6. The apparatus of claim 5, wherein the second determining module comprises:
the obtaining submodule is used for obtaining the initial thread number in the initial configuration subfile in the configuration file;
the second determining submodule is used for determining the initial thread number as a preset maximum thread number when the system is started for the first time;
and the third determining submodule is used for extracting the highest-utilization-rate thread number in the intermediate configuration subfile in the configuration file when the system is not started for the first time, and determining the highest-utilization-rate thread number as the preset maximum thread number.
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| CN109471716A (en) * | 2018-09-26 | 2019-03-15 | 努比亚技术有限公司 | A kind of application thread processing method, terminal and computer readable storage medium |
| CN109840141B (en) * | 2018-12-15 | 2024-05-03 | 平安科技（深圳）有限公司 | Thread control method and device based on cloud monitoring, electronic equipment and storage medium |
| CN109840142B (en) * | 2018-12-15 | 2024-03-15 | 平安科技（深圳）有限公司 | Thread control method and device based on cloud monitoring, electronic equipment and storage medium |
| CN109684228B (en) * | 2019-01-07 | 2022-07-05 | 武汉斗鱼鱼乐网络科技有限公司 | Performance test method, device, system and storage medium |
| CN111049914B (en) * | 2019-12-18 | 2021-02-09 | 珠海格力电器股份有限公司 | Load balancing method and device and computer system |
| CN114138469B (en) * | 2021-11-16 | 2023-11-14 | 苏州浪潮智能科技有限公司 | Thread self-adaptive distribution method and device for solid state disk and solid state disk |
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