CN117880107A - Method for adaptively adjusting parameters of network card equipment of thermal expansion virtual machine - Google Patents
Method for adaptively adjusting parameters of network card equipment of thermal expansion virtual machine Download PDFInfo
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Abstract
The invention discloses a method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine, which particularly relates to the technical field of computers, and comprises the following steps of 1, manufacturing a virtual machine mirror image, setting up the starting of rc.local service, requiring the rc.local service to be executed after the network is started, and placing a network card multi-queue and a network card interrupt affinity binding execution program in the rc.local service; step 2, when creating the virtual machine, setting the number of the multiple queues of the network card according to a setting rule to adjust to the maximum range; step 3, when the virtual machine is started, executing programs of network card multi-queue and network card interrupt affinity binding through rc.local service; according to the invention, under the condition that shutdown operation is not executed and manual intervention of a user is not needed, the device parameters related to the virtual machine network card are adaptively and dynamically adjusted, synchronous improvement of the performance of the virtual machine network card during thermal expansion is realized, and the network throughput performance of the virtual machine is improved.
Description
Technical Field
The invention relates to the technical field of cloud computing, in particular to a method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine.
Background
The virtual machine network card equipment parameters refer to configuration parameters related to a network interface card of the virtual machine, including bandwidth, buffer size, queue length and the like. In a virtualized environment, network interface card device parameters for virtual machines are adjusted to accommodate workload variations.
At present, the performance optimization mode of virtual machine network card equipment in the cloud computing field basically redefines the virtual machine form by closing the virtual machine or manually adjusts the virtual machine, the mode can cause long-time inaccessible to user service in the virtual machine and is unfavorable for forming a generalized solution, a common user can have certain network knowledge to improve the network performance, and along with the gradual development trend of the virtual machine on-line thermal expansion technology, the network card performance is synchronously improved when the thermal expansion virtual machine calculates resources, and no complete solution exists in the industry.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine, and by means of a bottom virtualization technology, a manner for dynamically adjusting transceiving performance of the network card is provided, so that the virtual machine can dynamically adjust aspects of data flow qos, multiple queues, interrupt binding, etc. of the network card device according to the CPU specification of the virtual machine under the condition that the virtual machine is not powered off, and network throughput performance of the virtual machine is synchronously improved during online thermal expansion of the virtual machine, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine comprises the following steps:
step 1, manufacturing a virtual machine mirror image, setting up the starting of rc.local service, requiring the rc.local service to be executed after network starting, and placing a network card multi-queue and a network card interrupt affinity binding execution program in the rc.local service;
step 2, when creating the virtual machine, setting the number of the multiple queues of the network card according to a setting rule to adjust to the maximum range;
step 3, when the virtual machine is started, executing programs of network card multi-queue and network card interrupt affinity binding through rc.local service;
step 4, when receiving a CPU thermal expansion instruction, sending a network card instruction through an unix socket channel;
and 5, after the system performs the hot expansion operation of the CPU, synchronously requesting the network module to adjust the network bandwidth of the virtual machine.
Further, the process of making the virtual machine mirror image comprises the following steps:
creating virtual machine mirror image, installing operation system and configuring required network setting;
editing/etc/rc.local file, adding execution command or script at starting;
adding a delay command in rc; to ensure that the relevant commands are executed after the network is completely started;
writing script or command for network card multiple queues and network card interrupt affinity binding.
Further, the setting rule is a principle of carrying out one-to-one binding with the CPU core according to the queue, and the maximum range is set as the maximum value of the virtual machine execution thermal expansion CPU; the virtual machine is required to run on a physical machine with a kernel version of more than 4.X, 256 queue numbers are supported by the virtual machine from the virtualization perspective, and the queue numbers are consistent with the CPU kernel numbers of the physical machine in a system of a NUMA architecture.
Further, the network card multi-queue distributes the network traffic to M queues, and M is a positive integer greater than zero; the network card interrupt affinity refers to associating a specific interrupt with a processor core to optimize interrupt handling performance of the system.
Further, executing the content of the network card multi-queue and network card interrupt affinity binding program includes:
executing a script through rc.local service when the virtual machine is started;
in the script, checking the number of CPUs of the current system by using a command nproc;
acquiring the related information of the current virtual machine instance through metadata service of cloud service by utilizing 169.254.169.254 special address so as to acquire the network card multi-queue configuration number under the current CPU number;
calling an ethtool to set a network card multi-queue number by using a queue command; the queue command is ethool-LethXcombinedN, wherein ethX is the name of a network card interface, and N is the number of queues to be set;
and binding the network card interrupt affinity with the CPU through the binding command.
Further, the content of the network card related instruction sent through the unix socket channel includes:
when a CPU thermal expansion instruction is received, executing CPU thermal expansion on the virtual machine through qemu, and then passing through an unixsocket channel between the physical machine and the virtual machine;
and sending an instruction for adjusting the network card multi-queue and interrupting the affinity binding to the qemu-gust-agent in the virtual machine.
Further, the content of the network card related instruction sent through the unix socket channel further includes:
after the agent receives the request, calling a network card multi-queue and a network card interrupt affinity binding execution program, wherein the program checks the CPU core number in the current virtual machine, accesses metadata service by accessing a specific routing address of 169.254.169.254, and re-acquires the network card multi-queue number of the virtual machine;
the number of multiple queues of the network card of the virtual machine is regulated through an ethtool-l < net-dev > combined < requests > command, the interrupt number of the interrupt device of the network card is obtained through checking/proc/interrupt, and the hardware interrupt request IRQ on the network card is bound to a newly added CPU.
Further, the network module performs data flow control on the virtual switch ovs according to the bandwidth value of the virtual machine network card.
In a second aspect, the present invention provides an electronic device comprising: a processor and a memory, wherein the memory stores a computer program for the processor to call;
the processor executes the method for adaptively adjusting the parameters of the thermal expansion virtual machine network card device by calling the computer program stored in the memory.
In a third aspect, the present invention provides a computer readable storage medium storing instructions that, when executed on a computer, cause the computer to perform a method for adaptively adjusting parameters of a thermal expansion virtual machine network card device as described above.
The invention has the technical effects and advantages that:
the invention provides a feasible scheme for dynamically adjusting the network bandwidth, multiple queues of the network card and interrupting the binding of affinity when carrying out thermal expansion of computing resources on the virtual machine and synchronously improving the network performance of the virtual machine.
Drawings
Fig. 1 is a schematic diagram of a method for thermally expanding virtual machine network card device parameters according to embodiment 1;
fig. 2 is a schematic diagram of a network card device of a thermal expansion virtual machine in embodiment 1;
FIG. 3 is a flow chart of a method for thermally expanding virtual machine network card device parameters according to embodiment 1;
FIG. 4 is a schematic diagram of an electronic device according to embodiment 2;
fig. 5 is a schematic diagram of a computer-readable storage medium according to embodiment 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, the drawings are merely schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. The functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor methods and/or microcontroller methods.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and a similar second element could be termed a first element, without departing from the scope of example embodiments. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention provides a generalized solution for adaptively adjusting network card equipment parameters of an online virtual machine when the virtual machine performs computing resource thermal expansion in the field of cloud computing based on a virtualization technology qemu-qa, wherein the network card equipment parameters comprise three aspects: referring to the illustration of figure 2 of the drawings,
(1) The method comprises the steps of adjusting the number of network card multi-queue related to network transceiving, wherein on a symmetric multi-core processor SMP system, only one CPU responds to IRQ (interrupt request) of an initial network card, and after a single CPU cannot meet the bandwidth performance of an increased network card, a network card multi-queue technology appears, and the network transceiving queues are bound to different CPU cores in the mode to meet the bandwidth requirement; therefore, the adjustment of the equipment parameters can improve the throughput of network transceiver packets of the virtual machine at the same time;
(2) The binding of the network card interrupt affinity is increased, the linux system distributes interrupt numbers to devices on the network card, the receiving and transmitting operation on the network card is converted into corresponding interrupt signals to be sent to the system for processing, on a symmetrical multi-core processor (SMP), only one CPU responds to the IRQ of one network card, and in order to improve the processing speed of the network card interrupt request, the interrupt signals can be distributed to more CPU processors, namely, the interrupt numbers and the CPU are bound in affinity;
(3) The bandwidth speed limit of the data flow on the network card is adjusted, the bandwidth of the virtual machine in the openstack system is that the qos speed limit processing is carried out on the network card equipment of the virtual machine on the virtual switch ovs, and when the computing resource is increased, the speed limit value is required to be adjusted, so that the network bandwidth of the virtual machine is increased.
Example 1
Referring to fig. 1, the disclosure of this embodiment provides a method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine, which includes:
step 1, manufacturing a virtual machine mirror image, setting up the starting of rc.local service, requiring the rc.local service to be executed after network starting, and placing a network card multi-queue and a network card interrupt affinity binding execution program in the rc.local service;
specifically, the process of making the virtual machine mirror image includes:
101. creating virtual machine mirror image, installing operation system and configuring required network setting;
102. editing/etc/rc.local file, adding execution command or script at starting;
103. adding a delay command in rc; to ensure that the relevant commands are executed after the network is completely started;
104. writing a script or command for network card multi-queue and network card interrupt affinity binding;
step 2, when creating the virtual machine, setting the number of the multiple queues of the network card according to a setting rule to adjust to the maximum range;
it should be noted that, the setting rule is a rule of performing one-to-one binding with the CPU core according to the queue, and the maximum range is set as the maximum value of the virtual machine executing thermal expansion CPU; further, the virtual machine is required to run on a physical machine with a kernel version of more than 4.X, 256 queue numbers are supported by the virtual machine from the virtualization perspective, and in a system of the NUMA architecture, the queue numbers are consistent with the CPU core numbers of the physical machine;
step 3, when the virtual machine is started, executing programs of network card multi-queue and network card interrupt affinity binding through rc.local service;
it should be noted that, the network card multiple queues distribute the network traffic to M queues, and the M CPUs process the network traffic simultaneously, so that the network performance is improved when the network traffic is peak, and the network throughput of the system is improved. Network card interrupt affinity refers to associating a particular interrupt with a processor core to optimize interrupt handling performance of the system; m is a positive integer greater than zero;
specifically, executing the content of the network card multi-queue and network card interrupt affinity binding program includes:
executing a script through rc.local service when the virtual machine is started; causing the rc.local service to start;
in the script, checking the number of CPUs of the current system by using a command nproc; the network card multi-queue and the interrupt affinity binding program are executed;
acquiring the related information of the current virtual machine instance through metadata service of cloud service by utilizing 169.254.169.254 special address so as to acquire the network card multi-queue configuration number under the current CPU number;
calling an ethtool to set a network card multi-queue number by using a queue command; the queue command is ethool-LethXcombinedN, wherein ethX is the name of a network card interface, and N is the number of queues to be set;
binding the network card interrupt affinity with the CPU through a binding command: the binding command includes a taskset or other related tool;
in the step, when the virtual machine is started, a program of network card multi-queue and network card interrupt affinity binding is executed through rc.local service, the number of current CPUs is checked, meanwhile, the network card multi-queue configuration number under the current number of the CPUs is obtained through 169.254.169.254, the network card multi-queue number is set through system call, and the network card interrupt affinity is bound with a CPU (central processing unit) so as to ensure that the network card interrupt processing is associated with a specific CPU core and improve the performance.
Step 4, when receiving a CPU thermal expansion instruction, sending a network card instruction through an unix socket channel;
specifically, the content of the network card related instruction sent through the unix socket channel includes:
when a CPU thermal expansion instruction is received, executing CPU thermal expansion on the virtual machine through qemu, and then passing through an unixsocket channel between the physical machine and the virtual machine;
sending an instruction for adjusting multiple queues of the network card and interrupting affinity binding to qemu-gust-agent in the virtual machine;
the content of the network card related instruction sent through the unix socket channel further comprises:
after the agent receives the request, calling a network card multi-queue and a network card interrupt affinity binding execution program, wherein the program checks the CPU core number in the current virtual machine, accesses metadata service by accessing a specific routing address of 169.254.169.254, and re-acquires the network card multi-queue number of the virtual machine;
adjusting the number of multiple queues of the network card of the virtual machine through an ethtool-l < net-dev > combined < requests > command, checking/proc/interrupt to acquire an interrupt number of an interrupt device of the network card, and binding a hardware interrupt request IRQ on the network card to a newly added CPU;
step 5, after the system completes the hot expansion operation of the CPU, synchronously requesting the network module to adjust the network bandwidth of the virtual machine;
the network module performs data flow control on the virtual switch ovs according to the bandwidth value of the virtual machine network card;
example 2
Referring to fig. 2, the present embodiment provides an electronic device, including: a processor and a memory, wherein the memory stores a computer program for the processor to call;
the processor executes the method for adaptively adjusting the parameters of the thermal expansion virtual machine network card device according to embodiment 1 by calling the computer program stored in the memory.
Example 3
Referring to fig. 2, the present embodiment provides a computer readable storage medium storing instructions that, when executed on a computer, cause the computer to perform a method for adaptively adjusting parameters of a thermal expansion virtual machine network card device according to embodiment 1.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, from one website site, computer, server, or data center over a wired network. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely one, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or other various media capable of storing program codes.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The method for adaptively adjusting the parameters of the network card equipment of the thermal expansion virtual machine is characterized by comprising the following steps of:
step 1, manufacturing a virtual machine mirror image, setting up the starting of rc.local service, requiring the rc.local service to be executed after network starting, and placing a network card multi-queue and a network card interrupt affinity binding execution program in the rc.local service;
step 2, when creating the virtual machine, setting the number of the multiple queues of the network card according to a setting rule to adjust to the maximum range;
step 3, when the virtual machine is started, executing programs of network card multi-queue and network card interrupt affinity binding through rc.local service;
step 4, when receiving a CPU thermal expansion instruction, sending a network card instruction through an unix socket channel;
and 5, after the system performs the hot expansion operation of the CPU, synchronously requesting the network module to adjust the network bandwidth of the virtual machine.
2. The method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine according to claim 1, wherein the process of making the virtual machine image comprises:
creating virtual machine mirror image, installing operation system and configuring required network setting;
editing/etc/rc.local file, adding execution command or script at starting;
adding a delay command in rc; to ensure that the relevant commands are executed after the network is completely started;
writing script or command for network card multiple queues and network card interrupt affinity binding.
3. The method for adaptively adjusting parameters of a network card of a thermal expansion virtual machine according to claim 2, wherein the setting rule is a rule of performing one-to-one binding with a CPU core according to a queue, and the maximum range is set as the maximum value of a CPU for performing thermal expansion of the virtual machine; the virtual machine is required to run on a physical machine with a kernel version of more than 4.X, 256 queue numbers are supported by the virtual machine from the virtualization perspective, and the queue numbers are consistent with the CPU kernel numbers of the physical machine in a system of a NUMA architecture.
4. The method for adaptively adjusting parameters of a network card of a thermal expansion virtual machine according to claim 3, wherein the network card multiple queues distribute network traffic into M queues, and the M queues are processed simultaneously by M CPUs, wherein M is a positive integer greater than zero; the network card interrupt affinity refers to associating a specific interrupt with a processor core to optimize interrupt handling performance of the system.
5. The method for adaptively adjusting parameters of a network card of a thermal expansion virtual machine according to claim 4, wherein executing content of a network card multi-queue and network card interrupt affinity binding program comprises:
executing a script through rc.local service when the virtual machine is started;
in the script, checking the number of CPUs of the current system by using a command nproc;
acquiring the related information of the current virtual machine instance through metadata service of cloud service by utilizing 169.254.169.254 special address so as to acquire the network card multi-queue configuration number under the current CPU number;
calling an ethtool to set a network card multi-queue number by using a queue command; the queue command is ethool-LethXcombinedN, wherein ethX is the name of a network card interface, and N is the number of queues to be set;
and binding the network card interrupt affinity with the CPU through the binding command.
6. The method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine according to claim 5, wherein the step of sending the content of the network card related instruction through an unix socket channel comprises the steps of:
when a CPU thermal expansion instruction is received, executing CPU thermal expansion on the virtual machine through qemu, and then passing through an unixsocket channel between the physical machine and the virtual machine;
and sending an instruction for adjusting the network card multi-queue and interrupting the affinity binding to the qemu-gust-agent in the virtual machine.
7. The method for adaptively adjusting parameters of a network card device of a thermal expansion virtual machine according to claim 6, wherein the sending content of the network card related instruction through an unix socket channel further comprises:
after the agent receives the request, calling a network card multi-queue and a network card interrupt affinity binding execution program, wherein the program checks the CPU core number in the current virtual machine, accesses metadata service by accessing a specific routing address of 169.254.169.254, and re-acquires the network card multi-queue number of the virtual machine;
the number of multiple queues of the network card of the virtual machine is regulated through an ethtool-l < net-dev > combined < requests > command, the interrupt number of the interrupt device of the network card is obtained through checking/proc/interrupt, and the hardware interrupt request IRQ on the network card is bound to a newly added CPU.
8. The method of claim 7, wherein the network module performs data flow control on the virtual switch ovs according to the bandwidth value of the virtual machine network card.
9. An electronic device, comprising: a processor and a memory, wherein the memory stores a computer program for the processor to call;
the processor executes a method for adaptively adjusting parameters of a thermal expansion virtual machine network card device according to any one of claims 1-8 by calling a computer program stored in the memory.
10. A computer readable storage medium storing instructions which, when executed on a computer, cause the computer to perform a method of adaptively adjusting parameters of a thermal expansion virtual machine network card device according to any one of claims 1-8.
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