CN114168323A - IO resource limiting method, device, equipment and medium based on IO response time - Google Patents
IO resource limiting method, device, equipment and medium based on IO response time Download PDFInfo
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- 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
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Abstract
The disclosure relates to an IO resource limitation method, an IO resource limitation device and an IO resource limitation medium based on IO response time, wherein the method comprises the following steps: receiving an IO request; the IO request comprises a priority identifier, IO response time is obtained based on the processing of the IO request, the average response time with the priority identifier in a set time window as a key priority is counted based on the IO response time, and the IO request with the priority identifier not as the key priority is limited under the condition that the average response time is larger than a preset time threshold. Therefore, IO limitation is triggered through IO response time, the problem of trigger condition definition under the condition that the I/O performance of the I/O equipment is changed is solved, and the normal completion of key tasks is guaranteed.
Description
Technical Field
The present disclosure relates to the field of database technologies, and in particular, to an IO resource restriction method, apparatus, device, and medium based on IO response time.
Background
In general, IO (Input Output) requests in a database are common.
In the related art, IO limitation is triggered by IOPS (number of IO per second) or MBPS (megabyte of IO per second) counting, however, the condition for triggering limitation is applicable when several mutually communicated database nodes share an independent storage device, but in many infrastructure environments, IO performance is floating, so that it becomes difficult to predefine IOPS or MBPS to describe IO capability. For example, the resource may be shared by a plurality of different and disconnected systems, and the actual IO performance depends on the comprehensive use state of each system; or the actual IO system is a distributed system, a failover or use of a hybrid storage device results in a change in IO capabilities.
Disclosure of Invention
To solve the technical problem or at least partially solve the technical problem, the present disclosure provides an IO resource restriction method, apparatus, device, and medium based on an IO response time.
The present disclosure provides an IO resource restriction method based on read-write IO response time, including:
receiving an IO request; wherein the IO request comprises a priority identification;
obtaining IO response time based on the processing of the IO request;
counting the average response time of the priority identification in a set time window as a key priority based on the IO response time;
and under the condition that the average response time is greater than a preset time threshold, limiting the IO request of which the priority identification is not the key priority.
In an optional embodiment of the present disclosure, the obtaining an IO response time based on the processing of the IO request includes:
acquiring receiving time for receiving the IO request;
acquiring output time for processing the IO request to obtain an output result;
and obtaining the IO response time based on the time difference between the output time and the receiving time.
In an optional embodiment of the present disclosure, the counting, based on the IO response time, an average response time in which the priority identifier in a set time window is a critical priority includes:
acquiring all the IO response time with the priority identification as the key priority in a set time window;
and obtaining the average response time based on all the IO response times and the number of the key priorities.
In an optional embodiment of the present disclosure, the limiting, when the average response time is greater than a preset time threshold, an IO request whose priority identifier is not the key priority includes:
acquiring the current response number of the IO requests with the priority identifications not being the key priority in unit time;
acquiring the number of limiting responses;
and under the condition that the current response number is greater than or equal to the limited response number, not responding to the IO request with the priority identification not being the key priority.
In an optional embodiment of the present disclosure, the IO resource restriction method based on IO response time further includes:
dividing the IO requests with the priority identifications not being the key priority to obtain a first priority IO request and a second priority IO request; wherein the first priority is greater than the second priority;
and under the condition that the current response number is smaller than the limited response number, performing response processing on the first priority IO request.
The present disclosure provides an IO resource restriction device based on read-write IO response time, including:
the service module is used for receiving the IO request; the IO request comprises a priority identifier, and IO response time is acquired based on the processing of the IO request;
a waiting event counting module, configured to count average response time for which the priority identifier in a set time window is a key priority, based on the IO response time;
and the IO limiting module is used for limiting the IO request with the priority identification not being the key priority under the condition that the average response time is greater than a preset time threshold.
In an optional embodiment of the present disclosure, the service module is specifically configured to:
acquiring receiving time for receiving the IO request;
acquiring output time for processing the IO request to obtain an output result;
and obtaining the IO response time based on the time difference between the output time and the receiving time.
In an optional embodiment of the present disclosure, the waiting event statistics module is specifically configured to:
acquiring all the IO response time with the priority identification as the key priority in a set time window;
and obtaining the average response time based on all the IO response times and the number of the key priorities.
In an optional embodiment of the present disclosure, the IO restriction module is specifically configured to:
acquiring the current response number of the IO requests with the priority identifications not being the key priority in unit time;
acquiring the number of limiting responses;
and under the condition that the current response number is greater than or equal to the limited response number, not responding to the IO request with the priority identification not being the key priority.
In an optional embodiment of the present disclosure, the IO resource restriction method based on IO response time and the IO restriction module are further specifically configured to:
dividing the IO requests with the priority identifications not being the key priority to obtain a first priority IO request and a second priority IO request; wherein the first priority is greater than the second priority;
and under the condition that the current response number is smaller than the limited response number, performing response processing on the first priority IO request.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
by receiving an IO request; the IO request comprises a priority identifier, IO response time is obtained based on the processing of the IO request, the average response time with the priority identifier in a set time window as a key priority is counted based on the IO response time, and the IO request with the priority identifier not as the key priority is limited under the condition that the average response time is larger than a preset time threshold. Therefore, IO limitation is triggered through IO response time, the problem of trigger condition definition under the condition that the I/O performance of the I/O equipment is changed is solved, and the normal completion of key tasks is guaranteed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart illustrating an IO resource restriction method based on IO response time according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating another IO resource restriction method based on IO response time according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an IO resource restriction device based on IO response time according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
The IO resource limitation method based on the IO response time provided by the embodiment of the disclosure limits occupation of other tasks to IO when the IO response time of the key task is higher than an expected value in order to guarantee normal completion of the key task, so that when the IOPS or MBPS of a system cannot be accurately predefined, IO resource limitation can be triggered through the IO response time to achieve the purpose of guaranteeing smooth completion of the key task.
Specifically, fig. 1 is a flowchart illustrating an IO resource restriction method based on IO response time according to an embodiment of the present disclosure. As shown in fig. 1, includes:
step 101, receiving an IO request; wherein the IO request includes a priority identification.
In the embodiment of the present disclosure, the database may receive an IO request and respond to the IO request, where in order to distinguish different IO requests, the IO request includes information such as a user identifier.
Step 102, obtaining IO response time based on the processing of the IO request.
In the embodiment of the disclosure, after receiving an IO request, the IO request is responded to obtain IO response time, where the IO response time refers to time consumed from receiving the IO request to completing the response.
In a specific embodiment of the present disclosure, a receiving time for receiving an IO request is obtained, an output time for obtaining an output result based on processing the IO request is obtained, and an IO response time is obtained based on a time difference between the output time and the receiving time.
Step 103, based on the IO response time, counting the average response time of the priority identifier in the set time window as the key priority.
In the embodiment of the present disclosure, the time window may obtain, according to a preset setting, for example, 1 second, 2 seconds, and the like, average calculation of IO response times of all priority identifications in the set time window as the key priorities, so as to obtain average response times of the key priorities.
For example, the 1 st IO response time is 1 second, the 5 th IO response time is 2 seconds, the 10 th IO response time is 3 seconds, the response time within the time window of 10 seconds is (1+2+3)/3, the continuation 15 th IO response time is 4 seconds, and the response time within the time window of 10 seconds is (2+3+ 4)/3.
In a specific embodiment of the present disclosure, all IO response times with priority identification as a key priority within a set time window are obtained, and an average response time is obtained based on all IO response times and the number of key priorities.
And 104, under the condition that the average response time is greater than a preset time threshold, limiting the IO requests of which the priority identifications are not the key priorities.
In the embodiment of the present disclosure, after the average response time is obtained, the average response time is compared with a preset time threshold, and when the average response time is greater than the preset time threshold, the IO request whose priority identifier is not the key priority is restricted. The preset time threshold is selected and set according to actual application needs, and the disclosure is not limited.
In a specific embodiment of the present disclosure, a current response number in unit time of an IO request whose priority identifier is not a key priority is obtained, a limited response number is obtained, and when the current response number is greater than or equal to the limited response number, no response processing is performed on the IO request whose priority identifier is not a key priority.
To sum up, the IO resource restriction method based on IO response time according to the embodiment of the present disclosure receives an IO request; the IO request comprises a priority identifier, IO response time is obtained based on the processing of the IO request, the average response time with the priority identifier in a set time window as a key priority is counted based on the IO response time, and the IO request with the priority identifier not as the key priority is limited under the condition that the average response time is larger than a preset time threshold. Therefore, IO limitation is triggered through IO response time, the problem of trigger condition definition under the condition that the I/O performance of the I/O equipment is changed is solved, and the normal completion of key tasks is guaranteed.
Fig. 2 is a flowchart illustrating another IO resource restriction method based on IO response time according to an embodiment of the present disclosure. As shown in fig. 2, includes:
step 201, receiving an IO request; wherein the IO request includes a priority identification.
In the embodiment of the present disclosure, the database may receive an IO request and respond to the IO request, where in order to distinguish different IO requests, the IO request includes information such as a user identifier.
Step 202, obtaining the receiving time for receiving the IO request, obtaining the output time based on processing the IO request to obtain the output result, and obtaining the IO response time based on the time difference between the output time and the receiving time.
In the embodiment of the disclosure, after receiving an IO request, the I/O response time is counted by the time difference between before and after each I/O request, where the IO response time refers to the time consumed from receiving the IO request to completing the response.
Step 203, obtaining all IO response times with the priority identification as the key priority in the set time window, and obtaining the average response time based on all IO response times and the number of the key priorities.
In the disclosed embodiment, if the IO request priority is identified as a critical priority, the average response time of the critical priority within a given time is calculated.
And 204, acquiring the current response number of the IO requests with the priority identifications not being the key priority in unit time, acquiring the limited response number, and not responding to the IO requests with the priority identifications not being the key priority under the condition that the current response number is larger than or equal to the limited response number.
Step 205, dividing the IO requests with priority identifications not being the key priority, and acquiring a first priority IO request and a second priority IO request; and when the current response number is less than the limited response number, performing response processing on the IO request with the first priority.
In the embodiment of the present disclosure, the limited number of responses may be set according to application needs, for example, 10 times per second, that is, only IO requests with priority identifications not being key priorities are processed 10 times within 1 second, and therefore, when the current number of responses is greater than or equal to the limited number of responses, no response processing is performed on IO requests with priority identifications not being key priorities.
In the embodiment of the present disclosure, IO requests with priority identifications not being key priorities may also be divided to obtain a first priority IO request and a second priority IO request, and the first priority IO request is responded when the current response number is smaller than the limited response number, so as to further meet the user demand.
To sum up, the IO resource restriction method based on IO response time according to the embodiment of the present disclosure receives an IO request; wherein the IO request comprises a priority identifier, the receiving time of the IO request is obtained, the output time of the output result is obtained by processing the IO request, the IO response time is obtained based on the time difference between the output time and the receiving time, all the IO response time with the priority identifier as the key priority in a set time window is obtained, the average response time is obtained based on all the IO response time and the number of the key priority, the current response number of the IO request with the priority identifier not as the key priority in unit time is obtained, and the limited response number is obtained, when the current response number is larger than or equal to the limit response number, the IO request with the priority identification not being the key priority is not responded, dividing IO requests with priority identifications not being key priorities to obtain first priority IO requests and second priority IO requests; and when the current response number is less than the limited response number, performing response processing on the IO request with the first priority. Therefore, the IO response time of the task can be calculated through the expected overall response time of the task and the IO quantity related to the task, when the overall response time and the IO quantity do not change violently, the relative change is not large, the IO limitation is triggered through the IO response time, the estimation of the IO response time relative to the IOPS and the MBPS is not influenced by the change of the IO equipment, namely when the IOPS or the MBPS of the system cannot be predefined accurately, the IO resource limitation can be triggered through the IO response time, and the purpose of guaranteeing the key task to be completed smoothly is achieved.
Corresponding to the foregoing IO resource restriction method based on IO response time, an embodiment of the present disclosure provides an IO resource restriction device based on IO response time, and fig. 3 is a schematic structural diagram of an IO resource restriction device based on IO response time provided by an embodiment of the present disclosure, where the device may be implemented by software and/or hardware, and may be generally integrated in an electronic device, as shown in fig. 3, the prompt device for forcibly specifying an execution plan includes the following modules:
a service module 301, configured to receive an IO request; the IO request comprises a priority identification, and IO response time is obtained based on the processing of the IO request.
A waiting event counting module 302, configured to count, based on the IO response time, an average response time in which the priority identifier in the set time window is a key priority.
An IO restriction module 303, configured to perform restriction processing on an IO request whose priority identifier is not the key priority when the average response time is greater than a preset time threshold.
In some embodiments, the service module 301 is specifically configured to:
acquiring receiving time for receiving the IO request;
acquiring output time for processing the IO request to obtain an output result;
and obtaining the IO response time based on the time difference between the output time and the receiving time.
In some embodiments, the wait for event statistics module 302 is specifically configured to:
acquiring all the IO response time with the priority identification as the key priority in a set time window;
and obtaining the average response time based on all the IO response times and the number of the key priorities.
In some embodiments, the IO restriction module 303 is specifically configured to:
acquiring the current response number of the IO requests with the priority identifications not being the key priority in unit time;
acquiring the number of limiting responses;
and under the condition that the current response number is greater than or equal to the limited response number, not responding to the IO request with the priority identification not being the key priority.
In some embodiments, the IO resource restriction module 303 of the IO resource restriction method based on IO response time is further specifically configured to:
dividing the IO requests with the priority identifications not being the key priority to obtain a first priority IO request and a second priority IO request; wherein the first priority is greater than the second priority;
and under the condition that the current response number is smaller than the limited response number, performing response processing on the first priority IO request.
To sum up, the IO resource restriction device based on IO response time according to the embodiment of the present disclosure receives an IO request; the IO request comprises a priority identifier, IO response time is obtained based on the processing of the IO request, the average response time with the priority identifier in a set time window as a key priority is counted based on the IO response time, and the IO request with the priority identifier not as the key priority is limited under the condition that the average response time is larger than a preset time threshold. Therefore, IO limitation is triggered through IO response time, the problem of trigger condition definition under the condition that the I/O performance of the I/O equipment is changed is solved, and the normal completion of key tasks is guaranteed.
The IO resource limitation prompting device based on IO response time provided by the embodiment of the invention can execute the IO resource limitation prompting method based on IO response time provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Fig. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure. As shown in fig. 4, the electronic device includes a processor 410, a memory 420, an input device 430, and an output device 440; the number of the processors 410 in the electronic device may be one or more, and one processor 410 is taken as an example in fig. 4; the processor 410, the memory 420, the input device 430 and the output device 440 in the electronic apparatus may be connected by a bus or other means, and the bus connection is exemplified in fig. 4.
The memory 420 serves as a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the external connection-to-internal connection method of the SQL statement in the embodiment of the present invention. The processor 410 executes various functional applications and data processing of the electronic device by executing the software programs, instructions and modules stored in the memory 420, that is, the IO resource restriction method based on the IO response time provided by the embodiment of the present invention is implemented.
The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to an electronic device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic apparatus, and may include a keyboard, a mouse, and the like. The output device 440 may include a display device such as a display screen.
The embodiment of the disclosure also provides a storage medium containing computer executable instructions, and the computer executable instructions are used for realizing the IO resource limitation method based on the IO response time when being executed by a computer processor.
Of course, the storage medium containing the computer-executable instructions provided in the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the IO resource restriction method based on the IO response time provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above search apparatus, each included unit and module are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An IO resource limitation method based on read-write IO response time is characterized by comprising the following steps:
receiving an IO request; wherein the IO request comprises a priority identification;
obtaining IO response time based on the processing of the IO request;
counting the average response time of the priority identification in a set time window as a key priority based on the IO response time;
and under the condition that the average response time is greater than a preset time threshold, limiting the IO request of which the priority identification is not the key priority.
2. The IO resource restriction method based on IO response time according to claim 1, wherein the obtaining of IO response time based on the processing of the IO request includes:
acquiring receiving time for receiving the IO request;
acquiring output time for processing the IO request to obtain an output result;
and obtaining the IO response time based on the time difference between the output time and the receiving time.
3. The IO resource restriction method according to claim 1, wherein the counting average response time in which the priority flag in the set time window is a critical priority based on the IO response time includes:
acquiring all the IO response time with the priority identification as the key priority in a set time window;
and obtaining the average response time based on all the IO response times and the number of the key priorities.
4. The IO resource limitation method according to claim 1, wherein the limiting, when the average response time is greater than a preset time threshold, the IO request whose priority identifier is not the key priority includes:
acquiring the current response number of the IO requests with the priority identifications not being the key priority in unit time;
acquiring the number of limiting responses;
and under the condition that the current response number is greater than or equal to the limited response number, not responding to the IO request with the priority identification not being the key priority.
5. The IO resource restriction method based on the IO response time of claim 4, further comprising:
dividing the IO requests with the priority identifications not being the key priority to obtain a first priority IO request and a second priority IO request; wherein the first priority is greater than the second priority;
and under the condition that the current response number is smaller than the limited response number, performing response processing on the first priority IO request.
6. An IO resource restriction apparatus based on an IO response time, comprising:
the service module is used for receiving the IO request; the IO request comprises a priority identifier, and IO response time is acquired based on the processing of the IO request;
a waiting event counting module, configured to count average response time for which the priority identifier in a set time window is a key priority, based on the IO response time;
and the IO limiting module is used for limiting the IO request with the priority identification not being the key priority under the condition that the average response time is greater than a preset time threshold.
7. The IO resource restriction device based on IO response time according to claim 6, wherein the processing and obtaining time module is specifically configured to:
acquiring receiving time for receiving the IO request;
acquiring output time for processing the IO request to obtain an output result;
and obtaining the IO response time based on the time difference between the output time and the receiving time.
8. The IO resource restriction device based on IO response time according to claim 6, wherein the waiting event statistics module is specifically configured to:
acquiring all the IO response time with the priority identification as the key priority in a set time window;
and obtaining the average response time based on all the IO response times and the number of the key priorities.
9. An electronic device, characterized in that the electronic device comprises:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to read the executable instructions from the memory and execute the instructions to implement the IO resource restriction method based on IO response time according to any one of claims 1 to 5.
10. A computer-readable storage medium storing a computer program for executing the IO resource restriction method based on IO response time according to any one of claims 1 to 5.
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