CN112165435A - Bidirectional flow control method and system based on network service quality of virtual machine - Google Patents
Bidirectional flow control method and system based on network service quality of virtual machine Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/60—Queue scheduling implementing hierarchical scheduling
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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
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/52—Queue scheduling by attributing bandwidth to queues
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/805—QOS or priority aware
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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
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45562—Creating, deleting, cloning virtual machine instances
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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
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45595—Network integration; Enabling network access in virtual machine instances
Abstract
The invention discloses a bidirectional flow control method and a system based on network service quality of a virtual machine, wherein the method comprises the following steps: creating a virtual machine, and creating virtual network equipment in an exit direction and an entrance direction respectively; respectively configuring queues for virtual network equipment in the outlet direction and the inlet direction, and respectively adding an outlet flow control rule and an inlet flow control rule; flow control is carried out on data from other equipment based on the inlet flow control rule; and carrying out flow control on data to be sent to other equipment based on the outlet flow control rule. The invention realizes the bidirectional flow control of the virtualized network card by establishing a pair of virtual network devices for each virtual machine and respectively setting flow control rules in the inlet and outlet directions.
Description
Technical Field
The present application relates to the field of virtualization technologies, and in particular, to a bidirectional flow control method and system based on network quality of service of a virtual machine.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In recent years, people have increasingly high network dependence, the demand for network applications is increasing, network service providers must improve competitiveness by providing high-quality and manageable network services meeting the user demands, and the research on network service management has become a hot spot in the field of network management at home and abroad. With the continuous emergence and wide application of new technologies such as virtualization and the like, network services present diversity and hierarchy, and virtualized network service management faces higher challenges.
As an important part of network service management, virtualized network quality of service (QOS) also needs to allocate and schedule resources for different applications according to different QOS requirements or user requirements, and provide different QOS for different data streams, as on a physical platform: preferentially processing important data messages with strong real-time performance; for the common data message with weak real-time performance, lower processing priority is provided, and the common data message is discarded even when the network is congested. The virtualized network quality of service can assign different levels of transmission priority to a certain class of data flows to identify its relative importance, and provide special transmission service for the data flows by using various priority forwarding strategies, congestion avoidance and other mechanisms provided by the equipment. The virtual network environment of the QOS is configured, so that the predictability of the network performance can be realized, the network bandwidth can be effectively distributed, and the network resources can be more reasonably utilized.
Aiming at a network card on a physical machine, in a Linux operating system, bandwidth control can be performed on network traffic through queues, most queues (qdisc) are used for bandwidth control of output traffic, such as hierarchical marking bucket (HTB) queues and the like, and complex queue rules can be set for the HTB queues, so that the bandwidth of the output traffic is flexibly controlled; however, the input traffic has only one queue, i.e., an Ingress queue, and the Ingress queue has a simple function and cannot specify a complicated queue rule, so that it is difficult to control the input traffic.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a bidirectional flow control method and a bidirectional flow control system based on the network quality of service (QOS) of virtual machines.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
a bidirectional flow control method based on virtual machine network service quality comprises the following steps:
creating a virtual machine, and creating virtual network equipment in an exit direction and an entrance direction respectively;
respectively configuring queues for virtual network equipment in the outlet direction and the inlet direction, and respectively adding an outlet flow control rule and an inlet flow control rule;
flow control is carried out on data from other equipment based on the inlet flow control rule;
and carrying out flow control on data to be sent to other equipment based on the outlet flow control rule.
Further, virtual network devices are created in the egress direction and the ingress direction, respectively, based on the Linux TAP approach.
One or more embodiments provide a bidirectional flow control system based on virtual machine network quality of service, comprising:
a virtual machine creation module configured to create a virtual machine, and create virtual network devices in an egress direction and an ingress direction, respectively;
a flow control rule configuration module configured to configure queues for virtual network devices in the egress and ingress directions, and add egress flow control rules and ingress flow control rules, respectively;
an input flow control module configured to flow control data from the other device based on the ingress flow control rule;
and the output flow control module is configured to control the flow of the data to be sent to other equipment based on the outlet flow control rule.
Further, virtual network devices are created in the egress direction and the ingress direction, respectively, based on the Linux TAP approach.
The above one or more technical solutions have the following beneficial effects:
under the virtualization environment, a pair of virtual network devices is created for each virtual machine, and flow control rules in the inlet and outlet directions are respectively set, so that bidirectional flow control of the virtualization network card is realized.
After virtual network equipment in the inlet direction and the outlet direction is established based on a Linux standard virtual network equipment-TAP mode, a hierarchical marking bucket (HTB) queue rule is set respectively aiming at the inlet direction and the outlet direction, and the complexity of input flow control is reduced on the basis of realizing the bidirectional flow control of a virtualized network card.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a flowchart of a bidirectional flow control method based on QoS of a virtual machine network according to an embodiment of the present invention;
fig. 2 is a flow bandwidth of a QOS policy front entry set by a virtual machine in an embodiment of the present invention;
FIG. 3 is a diagram illustrating ingress traffic bandwidth after a virtual machine sets a QOS policy, in accordance with an embodiment of the present invention;
fig. 4 is a flow bandwidth of egress before a virtual machine sets a QOS policy in an embodiment of the present invention;
fig. 5 is a flow bandwidth of an egress after a QOS policy is set by a virtual machine in an embodiment of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
For the network card on the physical machine, in the Linux operating system, the complex bandwidth control can be performed on the data packet input and output by the network, and different bandwidth control can be performed on different source addresses, different source ports, different destination addresses and different destination ports of the input or output data packet. Based on this, the present embodiment provides a bidirectional flow control method based on virtual machine network quality of service (QOS), which is applied to a client or a host, and specifically includes the following steps:
step 1: creating a virtual machine, creating a pair of virtual network devices, and for the convenience of identification, calling the network device configured with the exit queue rule as an exit direction network device, and calling the network device configured with the entry queue rule as an entry direction network device;
the QOS in Linux is divided into an Ingress (Ingress) part and an Egress (Egress) part, where the Ingress part is mainly used to perform bandwidth control on input traffic and the Egress part is mainly used to perform bandwidth control on output traffic.
In this embodiment, a virtual network device in the ingress and egress directions is created based on the Linux TAP. Specifically, a virtual network device (or called network card) in the egress direction is created: identifying pre-xx, creating a piece of virtual network equipment in the entry direction: identify aft-xxx.
Specifically, the network device that creates the egress direction:
ip tuntap add pre-xx mode tap
network device creating an ingress direction:
ip tuntap add aft-xxx mode tap
step 2: respectively configuring queues for virtual network equipment in the outlet direction and the inlet direction, and respectively adding flow control rules;
specifically, an Egress queue is added to the virtual network device in the Egress direction, an Ingress queue is added to the virtual network device in the Ingress direction, and the queue length is initialized.
Specifically, network devices pre-xx and aft-xxx are enabled.
And starting the device pre-xx by using an ip link set command, and setting the length of a network card queue to be 1000.
ip link set dev pre-xx up[txqueuelen 1000]
And starting the aft-xx of the equipment by using an ip link set command, and setting the length of a network card queue to be 1000.
ip link set dev aft-xxx up[txqueuelen 1000]
After the virtual network devices pre-xx and aft-xxx are enabled, an HTB queue is configured for the traffic passing through the two devices, and a complex queue rule can be set on the HTB queue, so that the function of performing complex bandwidth control on the input traffic is realized.
The adding of the flow control rule specifically comprises:
(1) configuring a root classification of an HTB queue for the virtual network equipment in the outlet direction, and adding an outlet flow control rule; the outlet flow control rules include a minimum desired rate and a maximum desired rate of output flow.
Specifically, a tc qdisc add dev command is used to add a root class of an HTB queue to a network device pre-0fatxbce in an egress direction, a queue handle is 1, and a default class handle is a class of 100;
tc qdisc add dev pre-0fatxbce root handle 1:htb default 100
add control rules using tc class add dev: the minimum expected rate and the maximum expected rate of the outlet flow are set to 5000kbit
tc class add dev pre-0fatxbce parent 1:classid 1:100htb rate 5000dkbit ceil 5000kbit
(2) Configuring a root classification of an HTB queue for the virtual network equipment in the inlet direction, and adding an inlet flow control rule; the ingress flow control rule includes a minimum desired rate and a maximum desired rate of output flow.
And adding an htb queue to the network device aft-0fatxbce in the inlet direction by using a tc qdisc add dev command, wherein the htb queue is used for controlling the input flow.
tc qdisc add dev aft-0fatxbce root handle 1:htb default 100
Set the root classification using tc class add dev, and add the rule: the minimum expected rate and the maximum expected rate of the inlet flow are both set to 3000kbit
tc class add dev aft-0fatxbce parent 1:classid 1:100htb rate 3000dkbit ceil 3000kbit
And step 3: if the virtual network equipment in the inlet direction receives data from other equipment, flow control is carried out based on the flow control rule in the inlet direction; and if the virtual network equipment in the outlet direction receives data to be sent to other equipment, carrying out flow control based on the flow control rule in the outlet direction.
Specifically, if the current device is a host, the other devices may be clients; if the current device is a client, the other devices may be hosts.
Example two
The present embodiment aims to provide a bidirectional flow control system based on network service quality of a virtual machine, including:
a virtual machine creation module configured to create a virtual machine, and create virtual network devices in an egress direction and an ingress direction, respectively;
a flow control rule configuration module configured to configure queues for virtual network devices in the egress and ingress directions, and add egress flow control rules and ingress flow control rules, respectively;
an input flow control module configured to flow control data from the other device based on the ingress flow control rule;
and the output flow control module is configured to control the flow of the data to be sent to other equipment based on the outlet flow control rule.
EXAMPLE III
An object of the present embodiment is to provide a computing device.
The steps related to the second embodiment correspond to the first embodiment of the method, and the detailed description thereof can be found in the relevant description of the first embodiment. The term "computer-readable storage medium" should be taken to include a single medium or multiple media containing one or more sets of instructions; it should also be understood to include any medium that is capable of storing, encoding or carrying a set of instructions for execution by a processor and that cause the processor to perform any of the methods of the present invention.
Results of the experiment
And testing the network exit/entrance bandwidth before and after using the configuration QOS strategy.
The test method comprises the following steps: and respectively testing the network bandwidth of the virtual machine in the outlet and inlet directions before and after the QOS strategy is added by using an iperf testing tool.
And (3) testing environment: shenwei platform-SW 6A
Version of Linux kernel: 4.4.15-kvm-00333-g03d1576
qemu version: 2.11.1
Testing the tool: iverf
The test procedure was as follows:
starting a KVM virtual machine on a host machine (physical machine), wherein the IP of the host machine is as follows: 120.219.8.24, virtual machine IP 120.219.8.106.
(a) Virtual machine entry direction speed limit comparison
Before a QOS strategy is set, an iperf-s command is started on a virtual machine, and under the condition of unlimited speed, the inlet flow bandwidth of the virtual machine is 89.6 Mbit/sec.
Setting an entrance direction speed limit strategy: the peak value and the average value of the network flow are both 3000kB/s, and the flow is sent from the host machine to the virtual machine.
After the rule is set, the virtual machine inlet traffic bandwidth is 2.56 Mbit/sec.
(b) Virtual machine exit direction speed limit comparison
Before a QOS strategy is set, an iperf-s command is started on a host machine, and the bandwidth of the outlet flow of the virtual machine is 1.39Gbit/sec under the condition of unlimited speed.
Setting the peak value and the average value of the network traffic of the speed limit strategy to be 5000KB/s, and sending the traffic from the virtual machine to the host machine.
After the rules are set, the virtual machine egress traffic bandwidth is 4.77 Mbit/sec.
Those skilled in the art will appreciate that the modules or steps of the present invention described above can be implemented using general purpose computer means, or alternatively, they can be implemented using program code that is executable by computing means, such that they are stored in memory means for execution by the computing means, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps of them are fabricated into a single integrated circuit module. The present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A bidirectional flow control method based on virtual machine network service quality is characterized by comprising the following steps:
creating a virtual machine, and creating virtual network equipment in an exit direction and an entrance direction respectively;
respectively configuring queues for virtual network equipment in the outlet direction and the inlet direction, and respectively adding an outlet flow control rule and an inlet flow control rule;
flow control is carried out on data from other equipment based on the inlet flow control rule;
and carrying out flow control on data to be sent to other equipment based on the outlet flow control rule.
2. The virtual machine network quality of service based bidirectional flow control method of claim 1, wherein the virtual network devices are created in an egress direction and an ingress direction, respectively, based on a Linux TAP approach.
3. The method of claim 1, wherein configuring queues for virtual network devices in egress and ingress directions, respectively, comprises:
and adding an Egress queue for the virtual network device in the Egress direction, adding an Ingress queue for the virtual network device in the Ingress direction, and initializing the queue length.
4. The virtual machine network quality of service based bidirectional flow control method of claim 1, wherein adding an egress flow control rule comprises:
configuring an HTB queue rule for the virtual network equipment in the outlet direction, and adding an outlet flow control rule; the outlet flow control rules include a minimum desired rate and a maximum desired rate of output flow.
5. The virtual machine network quality of service based bidirectional flow control method of claim 1, wherein adding an ingress flow control rule comprises:
configuring an HTB queue rule for the virtual network equipment in the inlet direction, and adding an inlet flow control rule; the ingress flow control rule includes a minimum desired rate and a maximum desired rate of output flow.
6. A bidirectional flow control system based on network service quality of a virtual machine is characterized by comprising:
a virtual machine creation module configured to create a virtual machine, and create virtual network devices in an egress direction and an ingress direction, respectively;
a flow control rule configuration module configured to configure queues for virtual network devices in the egress and ingress directions, and add egress flow control rules and ingress flow control rules, respectively;
an input flow control module configured to flow control data from the other device based on the ingress flow control rule;
and the output flow control module is configured to control the flow of the data to be sent to other equipment based on the outlet flow control rule.
7. The virtual machine network quality of service based bidirectional flow control system of claim 6, wherein the virtual network devices are created in an egress direction and an ingress direction, respectively, based on a Linux TAP approach.
8. The virtual machine network quality of service based bidirectional flow control system of claim 6, wherein configuring queues for virtual network devices in egress and ingress directions, respectively, comprises:
and adding an Egress queue for the virtual network device in the Egress direction, adding an Ingress queue for the virtual network device in the Ingress direction, and initializing the queue length.
9. The virtual machine network quality of service based bidirectional flow control system of claim 1, wherein adding an egress flow control rule comprises:
configuring an HTB queue rule for the virtual network equipment in the outlet direction, and adding an outlet flow control rule; the outlet flow control rules include a minimum desired rate and a maximum desired rate of output flow.
10. The virtual machine network quality of service based bidirectional flow control system of claim 1, wherein adding an ingress flow control rule comprises:
configuring an HTB queue rule for the virtual network equipment in the inlet direction, and adding an inlet flow control rule; the ingress flow control rule includes a minimum desired rate and a maximum desired rate of output flow.
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| CN114900470B (en) * | 2022-06-17 | 2023-10-31 | 中国联合网络通信集团有限公司 | Flow control method, device, equipment and storage medium |
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