WO2014141854A1

WO2014141854A1 - Stabilization system, stabilization method, virtual machine environment, and program

Info

Publication number: WO2014141854A1
Application number: PCT/JP2014/054143
Authority: WO
Inventors: 亮仁小比賀; 智仁井口
Original assignee: 日本電気株式会社
Priority date: 2013-03-12
Filing date: 2014-02-21
Publication date: 2014-09-18
Also published as: JPWO2014141854A1; JP5796693B2

Abstract

A virtual machine environment that virtually generates virtual machines. The virtual machine environment has a transmission/reception unit, a calculation unit, and a determination unit. The transmission/reception unit receives a first communication request via a network, sends the first communication request to a virtual machine, and sends, via the network, a second communication request generated by the virtual machine processing the first communication request. The calculation unit calculates the communication processing time on the basis of the time that the transmission/reception unit received the first communication request and the time that the transmission/reception unit sent the second communication request. The determination unit determines the number of communication requests to be synthesized, on the basis of the communication processing time. A synthesis unit synthesizes the number of communication requests to be synthesized. The transmission/reception unit sends, as a batch, the number of synthesized communications requests synthesized by the synthesis unit, to the virtual machine.

Description

Stabilization system, stabilization method, virtual machine environment and program

The present invention relates to a system for stabilizing request processing time, a method for stabilizing request processing time, a virtual machine environment, and a program.

Patent Document 1 discloses an example of an interrupt processing synthesis system in a virtual machine. As illustrated in FIG. 12, the interrupt processing synthesis system includes a virtual machine 600, a virtual machine environment 700, a virtual disk 800, hardware 900, and a disk 940. The virtual machine 600 includes application software 610, a guest OS (Operating System) 620, and virtual hardware 630. The virtual machine environment 700 includes a VMM (Virtual Machine Monitor) 710 and a VMkernel 720. The hardware 900 includes a CPU 910, a storage adapter 920, and a memory 930. A virtual disk 800 refers to a disk device that is created in the virtual machine environment 700 and that is software-emulated.

When the computer does not have a virtual machine environment, that is, when the application wants to input / output to the hardware 900 in a combination of the application, the OS, and the hardware 900, the application requests the OS to input / output. The OS processes input / output requests issued by applications, and performs input / output to / from a disk, network, and other peripheral devices. For the input / output processing, a method generally called DMA (Direct Memory Access) is used. DMA refers to transmitting / receiving data between a predetermined memory area and a peripheral device using dedicated hardware (hereinafter referred to as DMA hardware) without using the CPU 910. The OS notifies the DMA hardware of an input / output command to the peripheral device. When the input / output processing to the peripheral device is completed, the DMA hardware issues an interrupt signal to the CPU 910. When the OS receives the interrupt signal sent to the CPU 910, the OS recognizes that the input / output to the peripheral device is completed and notifies the application of the result.

When the computer has the virtual machine environment 700, the input / output processing without the virtual machine environment first occurs in the virtual machine 600, and the same processing is also performed in the virtual machine environment 700. Specifically, an input / output request is issued from the guest OS 620 on the virtual machine to the virtual hardware 630 created by the virtual machine environment 700. The input / output request is sent from the virtual hardware environment to the OS (VMkernel 720) on the physical machine, and input / output processing is performed on the actual physical device.

A plurality of virtual machines 600 are executed in one virtual machine environment 700. Therefore, the number of input / output processes executed in the virtual machine environment 700 is increased by the number of virtual machines 600. In other words, assuming that the number of I / O processing requests issued from one virtual machine 600 per second is 10, the virtual machine environment 600 that executes the ten virtual machines 700 has 100 virtual machines per second. I / O requests must be processed.

As a method for reducing input / output requests, a method in which the virtual machine environment 700 collectively processes received input / output requests is effective. That is, the virtual machine environment 700 does not execute input / output requests issued from the virtual machine 600 each time, but executes processing when a fixed number of input / output requests are issued from the virtual machine 600. As a specific example, when the number of input / output processing requests issued from one virtual machine 600 per second is 10, the virtual machine environment 700 executes 10 input / output requests at a time. By performing such processing, the number of times the OS (VMkernel 720) on the virtual machine environment 700 commands the peripheral device and the virtual machine environment from the peripheral device, compared with the case where the input / output requests are executed one by one. It is possible to reduce the number of times that an interrupt signal rises to the OS (VMkernel 720) on 700 to 1/10. Of the above-described methods for processing input / output requests collectively, sending a certain number of interrupt signals raised from peripheral devices to the OS on the virtual machine is called interrupt processing combining.

The interrupt processing synthesis system in a virtual machine having the configuration disclosed in Patent Document 1 operates as follows. FIG. 13 shows a flowchart of the interrupt processing synthesis system. First, input / output is completed (S101). Next, it is confirmed whether or not the recalculation time of the interrupt processing synthesis has elapsed (S102). If the recalculation time has elapsed (YES in S102), the combined number of interrupt processes is recalculated (S103). A target value for the number of input / output processes (IOPS) per unit time is set. If the IOPS is below the target value, the number of interrupt processing composites is reduced. On the other hand, if the IOPS exceeds the target value, the combined number of interrupt processes is increased. Next, it is confirmed whether the number of I / O requests being executed is within a threshold (S104). If the number of I / O requests is within the threshold (YES in S104), it is determined whether to distribute the request according to the number of interrupt requests combined (S105). If the number of I / O requests is not within the threshold (NO in S104), an interrupt request is immediately delivered (S107). Next, when there are more interrupt signals than the combined number of interrupts (YES in S106), an interrupt request is distributed (S107). On the other hand, if there is no interrupt signal equal to or greater than the combined number of interrupts (NO in S106), the process ends. Finally, the delivery time is stored (S108). The delivery time is used when determining the next composite number.

US Patent Application Publication No. 2010/0274940

The problem with such a system is that the priority I / O processing is delayed. The reason is that Patent Document 1 uses CIF (Commands in Flight) and IOPS (IO Per Second) as judgment criteria for the number of interrupt processing composites. This is because cannot be excluded. CIF represents the number of input / output processes currently being executed. IOPS refers to the number of input / output processes per second. Both CIF and IOPS are indicators for the total number of inputs and outputs. That is, the combined number of interrupt processes cannot be changed based on the individual input / output process status. For example, the case where the virtual machine A that executes the communication process A and the virtual machine B that executes the communication process B are executed in the same virtual machine environment will be described. While we want to reduce the number of interrupt processing composites to shorten the latency of communication processing A (the time from when a process is requested until the processing result is returned), communication processing B performs a large amount of input / output processing. Assume that the environment requires. In this case, according to Patent Document 1, the IOPS on the virtual machine environment is increased by the communication process B, and the combined number of interrupt processes is increased. From this result, the request for the communication process A (interrupt processing composite number 0) cannot be satisfied and the latency cannot be lowered.

An example of an object of the present invention is to provide a stabilization system, a stabilization method, a virtual machine environment, and a program that solve the above-described problems.

The stabilization system according to the first embodiment of the present invention includes a virtual machine environment that virtually generates a virtual machine. The virtual machine environment is generated by receiving a first communication request over a network, sending the first communication request to the virtual machine, and processing the first communication request by the virtual machine. A transmission / reception unit that transmits the second communication request via the network, a reception time at which the transmission / reception unit receives the first communication request, and a transmission time at which the transmission / reception unit transmits the second communication request. A calculation unit that calculates a communication processing time based on the communication processing time, a determination unit that determines a combination number of communication requests based on the communication processing time, and a combination unit that combines the communication requests of the combination number. The transmission / reception unit collectively transmits the communication requests of the combined number combined by the combining unit to the virtual machine.

The stabilization method according to the second embodiment of the present invention is used for a virtual machine environment in which a virtual machine is virtually generated. The stabilization method is generated by receiving a first communication request via a network, transmitting the first communication request to the virtual machine, and processing the first communication request by the virtual machine. The second communication request is transmitted via the network, and the reception time when the virtual machine environment receives the first communication request and the transmission time when the virtual machine environment transmits the second communication request. Communication processing time is calculated based on the communication processing time, a composite number of communication requests is determined based on the communication processing time, the composite communication requests are combined, and the combined communication requests are combined into the virtual request. Including sending to the machine.

The virtual machine environment according to the third embodiment of the present invention virtually generates a virtual machine. The virtual machine environment is generated by receiving a first communication request via a network, sending the first communication request to the virtual machine, and processing the first communication request by the virtual machine. A transmission / reception unit that transmits the second communication request via the network, a reception time at which the transmission / reception unit receives the first communication request, and a transmission time at which the transmission / reception unit transmits the second communication request. A calculation unit that calculates a communication processing time based on the communication processing time, a determination unit that determines a combination number of communication requests based on the communication processing time, and a combination unit that combines the communication requests of the combination number. The transmission / reception unit collectively transmits the communication requests of the combined number combined by the combining unit to the virtual machine.

A program according to a fourth embodiment of the present invention receives a first communication request via a network and transmits the first communication request to the virtual machine to a computer that virtually generates a virtual machine. A second communication request generated by the virtual machine processing the first communication request via the network, and a reception time at which the virtual machine environment receives the first communication request; The virtual machine environment calculates a communication processing time based on the transmission time when the second communication request is transmitted, determines a composite number of communication requests based on the communication processing time, and determines the communication request of the composite number. Combining and transmitting the combined number of the combined communication requests to the virtual machine.

The above description does not enumerate all the features necessary for the embodiments of the present invention. Sub-combinations of these feature groups can also be embodiments of the present invention.

According to the embodiment of the present invention, it is possible to eliminate the delay of specific communication request processing among all input / output processing.

It is a block diagram which shows the structure of the stabilization system concerning the 1st Embodiment of this invention. The data structure which shows the content of the communication processing time storage part in the 1st Embodiment of this invention is shown. The data structure which shows the content of the communication request synthetic | combination number storage part in the 1st Embodiment of this invention is shown. It is a flowchart which shows the whole operation | movement of the stabilization system shown in FIG. It is a figure which shows the example of communication request identifier preparation by TCP / IP in 1st Embodiment. It is a flowchart showing operation | movement of the communication processing time monitoring part at the time of communication request reception in 1st Embodiment, and a communication processing time calculation part. It is a flowchart showing operation | movement of the communication processing time monitoring part at the time of communication request transmission in 1st Embodiment, and a communication processing time calculation part. It is a flowchart showing operation | movement of the communication request synthetic | combination number determination part in 1st Embodiment. It is a block diagram which shows the structure of the stabilization system concerning the 2nd Embodiment of this invention. It is a block diagram which shows the specific example of 1st Embodiment. It is an example of communication request identifier creation by SIP / IP in the specific example shown in FIG. It is a block diagram which shows the structure of the form for implementing related technology. It is a flowchart showing the operation | movement for implementing related technology.

Hereinafter, embodiments of the present invention will be described. The following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

As shown in FIG. 1, the stabilization system according to the first exemplary embodiment of the present invention includes a plurality of virtual machines 100 and a virtual machine environment 200.
The virtual machine 100 includes a communication service (application) 110, a guest OS 120, and a communication request receiving unit 130. The transmission / reception unit 130 may be simply referred to as the transmission / reception unit 130.
The virtual machine environment 200 includes a communication request transmission / reception unit 210, a network card driver 220, a communication processing time monitoring unit 250, a communication request composition unit 230, a communication request composition number storage unit 280, a communication request composition number determination unit 240, and a communication processing time calculation. Unit 260 and communication processing time storage unit 270. The communication request transmission / reception unit 210 may be simply referred to as a transmission / reception unit 210. The network card driver 220 may be simply referred to as a driver 220. The communication processing time monitoring unit 250 may be simply referred to as the monitoring unit 250. The communication request combining unit 230 may be simply referred to as a combining unit 230. The communication request composite number determination unit 240 may be simply referred to as a determination unit 240. The communication processing time calculation unit 260 may be simply referred to as the calculation unit 260. The communication processing time storage unit 270 may be simply referred to as a time storage unit 270. The communication request composite number storage unit 280 may be simply referred to as a composite number storage unit 280.

The virtual machine 100 is software that emulates a physical machine on the virtual machine environment 200.

The communication service 110 is an application that processes communication requests. The communication service 110 processes a communication request sent from the network N and returns a processing result to the transmission source. The communication service 110 is not particularly limited as long as it is an application that processes a communication request sent from the network N. Specific examples of the communication service 110 may include an Internet server such as TELNET or FTP (File Transfer Protocol), and a call service such as SIP (Session Initiation Protocol).

The guest OS 120 is an OS executed on the virtual machine 100.

The transmission / reception unit 130 transfers the communication request received from the network N to the communication service 110. The transmission / reception unit 130 returns the communication request processed by the communication service 110 to the communication request transmission source on the network N.
The transmission / reception unit 210 of the virtual machine environment 200 has a function of distributing a communication request received from the network N to each communication service 110 of the virtual machine 100.

The virtual machine environment 200 is software for executing a plurality of virtual machines 100.

The driver 220 is software for accessing a network card as a physical device. The driver 220 transfers the communication request arriving at the network card via the network N to the transmission / reception unit 210. The driver 220 returns the communication request processed by the communication service 110 to the transmission source of the communication request on the network N using the network card.

The monitoring unit 250 monitors the processing time of the communication request. The processing time here means that a communication request is processed on the virtual machine 100 running on the virtual machine environment 200 after the communication request arrives from outside the virtual machine environment 200, and the processed communication request is sent to the request transmission source. To the time until the virtual machine environment 200 transmits. The communication request identifier 272 is used to indicate that the received communication request and the communication request to be transmitted are a pair. The communication request to be transmitted is a processing result obtained by processing the received communication request by the communication service 110. The communication request identifier 272 is stored in the time storage unit 270. A method for creating the identifier 272 will be described later.

As shown in FIG. 2, the time storage unit 270 has an area for storing data related to the communication processing time. The time storage unit 270 stores the monitoring target application 271, the communication request identifier 272, the communication request reception time 273, the communication request transmission time 274, and the communication processing time 275. The monitoring target application 271 indicates the communication service 110 that is a monitoring target in the embodiment of the present invention. The communication request identifier 272 is a value indicating that the received communication request and the communication request to be transmitted are a pair.
A specific example of a method for creating the communication request identifier 272 using TCP / IP will be described with reference to FIG. The communication request identifier 272 in this example is calculated using the source IP address and destination IP address of the IP header, the source port number of the TCP header, and the destination port number. The IP address is broken down into four numbers. A total value of the four numbers of the IP address, the source port number, and the destination port number is set in the communication request identifier 272.
A specific calculation example is shown below.
Source IP address: 192.168.0.1.
Destination IP address: 192.168.0.2.
Source port number: 12345
Destination port number: 23
Communication request identifier = source IP address + destination IP address + source port number + destination port number = 192 + 168 + 0 + 1 + 192 + 168 + 0 + 2 + 12345 + 23
= 13091
As the communication request identifier 272, any index may be used as long as the communication request can be uniquely identified. The communication request reception time 273 indicates the time when the communication request arrives at the virtual machine environment 200 (transmission / reception unit 210). The communication request transmission time 274 indicates the time when the communication request is transmitted from the virtual machine environment 200 (transmission / reception unit 210) to the communication request transmission source. The communication processing time 275 indicates a time calculated as the difference between the communication request reception time 273 and the transmission time 274. The time storage unit 270 stores a reception time 273 and a transmission time 274 having a common identifier 272 as a pair.

The calculation unit 260 calculates the communication request processing time from the communication request reception time 273 and the communication request transmission time 274. That is, the calculation unit 260 calculates the communication processing time 275 from the difference between the communication request reception time 273 and the communication request transmission time 274 for each communication request.

As shown in FIG. 3, the composite number storage unit 280 has an area for storing data related to communication request composition. The composite number storage unit 280 stores a composite number change threshold (threshold) 281, a communication processing time deterioration rate (deterioration rate) 282, a communication processing time target value (target value) 283, and a communication request composite number (composite number) 284. To do. The threshold value 281 is a threshold value used to determine a change in the number of compositing communication requests. When the deterioration rate 282 exceeds the threshold value 281, the composite number 284 of the composite number storage unit 280 is changed. The deterioration rate 282 indicates the ratio of communication requests in which the communication processing time 275 exceeds the target value 283 with respect to the entire communication requests processed by the monitoring target application 271. In the example illustrated in FIG. 2, when the monitoring target application 271 is “Application # 1”, the communication processing time 275 is “1.123” and “1.452”. On the other hand, in the example shown in FIG. 2, the target value 283 is “0.100”. Therefore, in this example, the communication processing time 275 exceeds the target value 283. That is, the two communication requests exceed the target value 283. Assume that the total number of communication requests monitored for Application # 1 is 17. In this case, the deterioration rate 282 is about 12% (≈ 2/17 * 100).

The determination unit 240 determines the composite number 284 of communication requests.
Specifically, the determination unit 240 determines the composite number 284 based on the deterioration rate 282. If the determination unit 240 determines that the deterioration rate 282 is greater than the threshold value 281, the determination unit 240 decreases the number of synthesis 284. For example, the determination unit 240 may reduce the composite number 284 by one each time the deterioration rate 282 exceeds the threshold value 281, but is not limited thereto. The number to reduce the composite number 284 may be freely determined.

The synthesizing unit 230 synthesizes the communication request. Combining communication requests refers to notifying the arrival of communication requests after a certain number of requests have arrived when the communication request arrives. The composite number of communication requests is determined based on the composite number 284 stored in the composite number storage unit 280 shown in FIG. In the example of FIG. 3, the number of synthesis 284 is 30. Therefore, the transmission / reception unit 210 notifies the virtual machine 100 that a communication request has arrived after 30 requests have arrived.

As described above, in this embodiment, the processing time of the communication request process is monitored, and the composite number of communication request notifications based on the processing time monitoring result is changed. As a result, the communication request processing time can be stabilized.

Next, the operation of the present embodiment will be described in detail with reference to the flowcharts of FIGS. 4, 6, 7, and 8.

FIG. 4 shows the overall operation of the present embodiment. The monitoring unit 250 monitors the communication request reception time 273 and the communication request transmission time 274. The calculation unit 260 measures the communication processing time 275 (S1). The determination unit 240 extracts a communication request in which the communication processing time 275 exceeds the target value 283, and calculates the deterioration rate 282 (S2). The determination unit 240 determines whether the deterioration rate 282 exceeds the threshold value 281 (S3). If the deterioration rate 282 exceeds the threshold value 281 (YES in S4), the determination unit 240 changes the composite number 284 (S5). If the deterioration rate 282 does not exceed the threshold 281 (NO in S4), the determination unit 240 ends the process without changing the composite number 284.

FIG. 6 shows operations of the monitoring unit 250 and the calculation unit 260 when a communication request arrives. The monitoring unit 250 extracts a TCP / IP header from the received packet (communication request) (S6). The calculator 260 calculates the communication request identifier 272 based on the TCP / IP header (S7). The calculation method of the identifier 272 is as described above. The monitoring unit 250 and the calculation unit 260 store the communication request identifier 272 and the packet reception time (communication request reception time 273) in the time storage unit 270 (S8).

FIG. 7 shows operations of the monitoring unit 250 and the calculation unit 260 when a communication request is returned. The monitoring unit 250 extracts the TCP / IP header from the packet to be transmitted (S9). The calculator 260 calculates the communication request identifier 272 based on the TCP / IP header (S10). The calculation unit 260 checks whether the identifier 270 that matches the calculated identifier 272 is stored in the time storage unit 270 (S11). If there is a matching identifier 270 (YES in S11-1), calculation unit 260 stores the transmission time (communication request transmission time 274) in the entry of identifier 272 in time storage unit 270 (S12). Furthermore, the calculation unit 260 calculates the communication processing time 275 and stores the communication processing time 275 in the entry (S13). If there is no matching identifier (NO in S11-1), calculation unit 260 ends the process.

FIG. 8 shows the operation of the determination unit 240. The determination unit 240 extracts the communication processing time 275 corresponding to the monitoring target application 271 (S14). The determination unit 240 extracts a communication processing time 275 that exceeds the target value 283 from the extracted communication processing time 275. The determination unit 240 calculates the deterioration rate 282 based on the extracted number of communication processing times 275 and the extracted number of communication processing times 275 (S15). The determination unit 240 determines whether the deterioration rate 282 exceeds the threshold value 281 (S16). When deterioration rate 282 exceeds threshold value 281 (YES in S17), determination unit 240 changes composite number 284 (S18). When the deterioration rate 282 does not exceed the threshold 281 (NO in S17), the determination unit 240 does not change the composite number 284 (does not execute the process of S18). Finally, the determination unit 240 deletes the entry of the monitoring target application 271 from the time storage unit 270 (S19).

Next, the effect of this embodiment will be described. In the present embodiment, the communication request processing time in the communication application to be monitored is monitored, and the composite number 284 is changed according to the deterioration of the processing time. For this reason, the communication request processing time in a specific application can be stabilized.

Next, a second embodiment of the present invention will be described with reference to the drawings. As illustrated in FIG. 9, the stabilization system according to the second embodiment includes a communication request composition unit 140 in the virtual machine 100 in addition to the configuration of the first embodiment. The communication request combining unit 140 may be simply referred to as a combining unit 140. The function of the combining unit 140 is the same as that of the combining unit 230.

Next, the effect of the second embodiment will be described. In the second embodiment, the synthesis unit 140 is also arranged in the virtual machine 100. For this reason, when the virtual machine 100 transfers a communication request to the virtual machine environment 200, the number of transfers can be reduced. Since the number of transfers is reduced, the overhead of transfer processing can be reduced.

Next, a specific example of the first embodiment of the present invention will be described. As illustrated in FIG. 10, the virtual machine 300 according to the present embodiment includes an Asterisk 310 as a communication service, Linux (registered trademark) 320 as a guest OS, and a virtual 330 as a communication request request transmission / reception unit. Further, in this embodiment, a KVM (Kernel-based Virtual Machine) 400 is used as a virtual machine environment. The KVM 400 includes a vhost_net 410 as a communication request request transmission / reception unit, and an E1000 Driver 420 as a network card driver.

The Asterisk 310 is a SIP server for processing a voice call used in a mobile phone or the like.

The Virtual 330 is a Linux kernel driver for transmitting / receiving a communication request to / from the vhost_net 410.

Vhost_net 410 is a Linux kernel driver. The Vhost_net 410 distributes the communication request that has arrived at the KVM 400 to each virtual machine 300. The Vhost_net 410 transmits a communication request from each virtual machine 300 to another computer on the network N.

The E1000 Driver 420 receives the communication request via the network N and transfers the communication request to the vhost_net 410. The Vhost_net 410 determines which of the virtual machines 300 operating on the KVM 400 is the destination of the transferred communication request. The Vhost_net 410 transfers the communication request to the destination virtual machine 300. A method for determining the destination will be described. The Vhost_net 410 acquires the destination IP address from the TCP / IP header of the communication request, and determines that the virtual machine 300 to which the same IP address as the acquired destination IP address is assigned is the destination. The monitoring unit 250 monitors communication requests that arrive on the vhost_net 410. The calculator 260 calculates the communication processing time 275.
With reference to FIG. 11, a method of using a SIP / IP header to obtain the communication request identifier 272 will be described. The communication request identifier 272 is calculated using the transmission source IP address and Call-ID. The calculation unit 260 acquires the transmission source IP address from the IP header. The calculation unit 260 acquires the Call-ID from the SIP header. In the example of FIG. 11, the Call-ID is “123456@sipperserver.com”. A numerical value on the left side of the call mark from the Call-ID is used to calculate the communication request identifier 272.
A specific calculation example of the communication request identifier 272 is shown below.
Source IP address: 192.168.0.1.
Call-ID: 123456
Communication request identifier = source IP address + Call-ID
= 192 + 168 + 0 + 1 + 1123456
= 123807

As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

The virtual machine environment 200 described above may have a computer system inside. The operation of each processing unit described above is stored in a computer-readable recording medium in the form of a program, and the above processing may be performed by the computer reading and executing the program. The computer-readable recording medium may include a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, and a semiconductor memory. The computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

The program may be for realizing a part of the functions described above.
The program may be a so-called difference file (difference program) that can realize the functions described above in combination with a program already recorded in the computer system.
Although the present invention has been described and described with reference to the embodiments, the present invention is not limited to the above embodiments. Those skilled in the art will recognize that various changes can be made in configuration and detail without departing from the scope of the invention as defined by the claims.

This application claims priority based on Japanese Patent Application No. 2013-049048 filed on March 12, 2013, the entire disclosure of which is incorporated herein.

The embodiment of the present invention can be applied to applications such as stabilizing the communication processing of a specific telephone line (Call-ID) among services of a telephone exchange server (SIP server) constituting a mobile phone service. The embodiment of the present invention can also be applied to uses such as stabilization of communication quality of voice call software and other network services.

The execution order of each process such as operations, procedures, steps, and stages in the system, method, apparatus, program, and recording medium shown in the claims, specification, and drawings is particularly “before” and “in advance”. The output of the previous process is not used in the subsequent process, and can be realized in any order. Even if the operation flow in the claims, the description, and the drawings is described using “first”, “next”, and the like for convenience, it does not mean that the operations are essential in this order.

100 Virtual machine 110 Communication service 120 Guest OS
130 Communication request transmission / reception unit (transmission / reception unit)
200 Virtual machine environment 210 Communication request transmission / reception unit (transmission / reception unit)
220 Network Card Driver (Driver)
230 Communication request composition unit (composition unit)
240 Communication Request Composite Number Determining Unit (Determining Unit)
250 Communication processing time monitoring unit (monitoring unit)
260 Communication processing time calculator (calculator)
270 Communication processing time storage unit (time storage unit)
271 Monitored Application 272 Communication Request Identifier 273 Communication Request Reception Time 274 Communication Request Transmission Time 275 Communication Processing Time 280 Communication Request Composite Number Storage Unit (Composite Number Storage Unit)
281 Composite number change threshold (threshold)
282 Communication processing time deterioration rate (deterioration rate)
283 Communication processing time target value (target value)
284 Communication request composition number (composition number)

Claims

It has a virtual machine environment that generates virtual machines virtually.
The virtual machine environment is
A second communication request generated by receiving a first communication request via a network, transmitting the first communication request to the virtual machine, and processing the first communication request by the virtual machine; A transmission / reception unit for transmitting via the network;
A calculation unit that calculates a communication processing time based on a reception time at which the transmission / reception unit receives the first communication request and a transmission time at which the transmission / reception unit transmits the second communication request;
A determination unit that determines a composite number of communication requests based on the communication processing time;
A synthesis unit that synthesizes the number of communication requests.
The said transmission / reception part transmits the communication request | requirement of the said composite number synthesize | combined by the said synthetic | combination part collectively to the said virtual machine.
The virtual machine is
The stabilization system according to claim 1, further comprising a combining unit that combines communication requests.
The virtual machine environment further includes a time storage unit,
The time storage unit is
Information indicating an application to be monitored in the virtual machine;
An identifier used in common for the first communication request and the second communication request;
The reception time of the first communication request;
A transmission time of the second communication request;
The stabilization system according to claim 1, wherein the communication processing time indicating a difference between the reception time and the transmission time is stored.
The virtual machine environment further includes a composite number storage unit,
The composite number storage unit
A target value of the communication processing time;
A deterioration rate indicating a ratio of communication requests in which the communication processing time exceeds the target value with respect to the entire communication requests processed by the application to be monitored in the virtual machine;
A threshold that is compared with the degradation rate and used to determine whether to change the number of composites;
The stabilization system according to any one of claims 1 to 3, wherein a composite number of the communication requests is stored.
A stabilization method for a virtual machine environment for virtually creating a virtual machine,
Receiving a first communication request via a network;
Sending the first communication request to the virtual machine;
Sending a second communication request generated by the virtual machine processing the first communication request via the network;
A communication processing time is calculated based on a reception time when the virtual machine environment receives the first communication request and a transmission time when the virtual machine environment transmits the second communication request;
Determine the number of compositing communication requests based on the communication processing time,
Combining the composite number of communication requests,
A stabilization method including: collectively transmitting the combined communication requests of the combined number to the virtual machine.
A virtual machine environment for virtually creating a virtual machine,
A second communication request generated by receiving a first communication request via a network, transmitting the first communication request to the virtual machine, and processing the first communication request by the virtual machine; A transmission / reception unit for transmitting via the network;
A calculation unit that calculates a communication processing time based on a reception time at which the transmission / reception unit receives the first communication request and a transmission time at which the transmission / reception unit transmits the second communication request;
A determination unit that determines a composite number of communication requests based on the communication processing time;
A synthesis unit that synthesizes the number of communication requests.
The virtual machine environment, wherein the transmission / reception unit transmits the combined number of communication requests combined by the combining unit to the virtual machine.
To a computer that virtually creates a virtual machine,
Receiving a first communication request via a network;
Sending the first communication request to the virtual machine;
Sending a second communication request generated by the virtual machine processing the first communication request via the network;
A communication processing time is calculated based on a reception time when the virtual machine environment receives the first communication request and a transmission time when the virtual machine environment transmits the second communication request;
Determine the number of compositing communication requests based on the communication processing time,
Combining the composite number of communication requests,
A program for causing the combined communication requests of the combined number to be transmitted to the virtual machine.