JP2009237859A - Virtual machine management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the processing efficiency of a virtual machine by keeping low the load of a computer where the virtual machine is constructed. <P>SOLUTION: This virtual machine management system for managing a virtual machine constructed within a computer includes a process load measuring means for measuring load to the computer during each process being executed on the virtual machine, and storing the load as process load information; a process load specification means for detecting the start or end of the process executed on the virtual machine, and specifying the load of the starting/ending process as starting/ending process load information based on the process load information; and a virtual machine load calculation means for calculating the load of the virtual machine on the computer based on the process load information and the starting/ending process load information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a virtual machine management system, and more particularly to a virtual machine management system that predicts a load of a virtual machine built in a computer and manages the arrangement of the virtual machine.

  From the viewpoint of flexible utilization of hardware resources, server aggregation, and the like, a system has been realized that operates by operating a plurality of virtual machines on a host machine. In such a system, in order to effectively use the resources of the host machine, a means for leveling the load has been proposed and realized by changing the allocation of the virtual machine and the host machine according to the load of the virtual machine. Yes. For example, Patent Document 1 proposes a means for rearranging a virtual machine with respect to a host machine according to the load of the virtual machine.

  When rearrangement as described above is performed, it is determined whether or not the load is in a high load state based on the actual measurement value of the load. However, in order to eliminate a case where the load increases instantaneously, it is necessary to confirm that the load is in a high load state for a certain period of time, so it takes time to start the rearrangement process. For this reason, there is a possibility that a considerable time is required until the rearrangement process is completed after the virtual machine falls into a high load state. In the meantime, there has been a problem that the processing efficiency on the virtual machine in a high load state is lowered.

JP 2005-115653 A JP 2004-199561 A

  On the other hand, Patent Document 2 provides a technology for predicting the resource usage state in the operating state of a virtual machine and reallocating resources when resources are insufficient. However, in the above technology, since the resource usage state is predicted for each virtual machine, the resource load state cannot be determined in more detail, making it difficult to place an appropriate virtual machine, and processing of the virtual machine It is difficult to improve efficiency.

  Therefore, an object of the present invention is to suppress the load on the computer on which the virtual machine is constructed, and to improve the processing efficiency of the virtual machine.

Therefore, a virtual machine management system for managing a virtual machine built in a computer, which is an aspect of the present invention,
Process load measuring means for measuring the load on the computer for each process running on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of a process executed on a virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculating means for calculating a load on the computer of the virtual machine based on each process load information and start / end process load information;
The structure that is equipped with.

In addition, a computer in which a virtual machine, which is another embodiment of the present invention, is constructed,
Process load measuring means for measuring the load on the computer for each process running on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of a process executed on a virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculating means for calculating a load on the computer of the virtual machine based on each process load information and start / end process load information;
The structure that is equipped with.

Moreover, the program which is the other form of this invention is:
On the computer where the virtual machine is built,
Process load measuring means for measuring the load on the computer for each process running on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of a process executed on a virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculating means for calculating a load on the computer of the virtual machine based on each process load information and start / end process load information;
To achieve the above.

In addition, a management device connected to a computer on which a virtual machine is constructed, which is another embodiment of the present invention,
Process load measuring means for measuring the load on the computer for each process being executed on the virtual machine and storing it as process load information, and detecting the start or end of the process executed on the virtual machine. Process load specifying means for specifying the load of the start / end process as start / end process load information based on the process load information, and the load on the computer of the virtual machine based on each process load information and start / end process load information And a virtual machine load calculating means for calculating
A configuration is adopted in which virtual machine construction changing means for changing the construction state of the virtual machine in the computer is provided based on the virtual machine load calculated by the virtual machine load calculating means of the computer.

Moreover, the program which is the other form of this invention is:
To the management device connected to the computer where the virtual machine is built,
Process load measuring means for measuring the load on the computer for each process being executed on the virtual machine and storing it as process load information, and detecting the start or end of the process executed on the virtual machine. Process load specifying means for specifying the load of the start / end process as start / end process load information based on the process load information, and the load on the computer of the virtual machine based on each process load information and start / end process load information A virtual machine load calculating means for calculating,
A configuration is adopted in which virtual machine construction changing means for changing the construction state of the virtual machine in the computer is realized based on the virtual machine load calculated by the virtual machine load calculating means of the computer.

Furthermore, a virtual machine management method for managing a virtual machine built in a computer, which is another aspect of the present invention,
A process load measuring step of measuring a load on the computer for each process running on the virtual machine and storing it as process load information;
A process load specifying step of detecting the start or end of a process executed on the virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
A virtual machine load calculating step of calculating a load on the computer of the virtual machine based on each process load information and start / end process load information;
It has the configuration of having.

  Since the present invention is configured as described above, it is possible to predict the load of the entire virtual machine when a change occurs in the operation state, such as when a process executed in the virtual machine starts or ends. It is possible to take quick measures such as rearranging the virtual machines for the computers based on the load of the virtual machines, and to suppress the load from being concentrated on a specific computer. As a result, it is possible to suppress an increase in the load on the computer and improve the processing efficiency of the virtual machine.

  The present invention is characterized in that a virtual machine load is predicted and a virtual machine is rearranged based on the predicted load. In particular, the computer load is suppressed by performing a virtual machine relocation process triggered by a change in the predicted value of the virtual machine load.

And the virtual machine management system which is one form of this invention,
A virtual machine management system for managing virtual machines built in a computer,
Process load measuring means for measuring the load on the computer for each process running on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of a process executed on a virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculating means for calculating a load on the computer of the virtual machine based on each process load information and start / end process load information;
The structure that is equipped with.

  The virtual machine management system includes a virtual machine construction change unit that changes a virtual machine construction state in the computer based on the virtual machine load calculated by the virtual machine load calculation unit. take.

  Further, the virtual machine load calculation means calculates the load of the virtual machine before and after the start / end process of the start / end process in the virtual machine, and the calculated load of the virtual machine starts or ends the process. If there is a change between before and after the virtual machine construction change means, the virtual machine construction change means notifies the virtual machine construction change means, and the virtual machine load change means changes the virtual machine load before and after the start or end of the process. When receiving a notification that there is, there is a configuration in which the construction state of the virtual machine in the computer is changed.

  In the virtual machine management system, a plurality of virtual machines can be constructed in each of a plurality of computers, and the virtual machine construction changing means reconfigures the virtual machines so as to change the arrangement of the virtual machines with respect to the plurality of computers. The arrangement of arranging is adopted. Further, the virtual machine construction change means adopts a configuration in which the arrangement of virtual machines with respect to a plurality of computers is changed so that the load on each computer is leveled by the virtual machine. Note that the load of the virtual machine is, for example, a load on a resource provided in a computer in which the virtual machine is constructed.

  Further, specifically, the virtual machine management system includes a host machine that is a computer on which the virtual machine is constructed, and a management device connected to the host machine, and the host machine includes a process load measuring unit and And a process load specifying unit and a virtual machine load calculating unit. The management apparatus includes a virtual machine construction changing unit.

  According to the above invention, first, the load of the process executed in the virtual machine built in the computer is measured and stored as process load information. Thereafter, when the activation / termination of the process is detected, the load of the activation / termination process is predicted and specified based on the stored process load information as described above, and used as the activation / termination process additional information. Based on the process load information and the start / end process load information, a load on the computer of the entire virtual machine is calculated and predicted.

  As described above, when a change occurs in the operation state such as when a process executed in the virtual machine starts / ends, the load of the entire virtual machine can be predicted by predicting the load of the start / end process. it can. Therefore, it is possible to take a quick action such as rearranging virtual machines for computers based on the predicted load of virtual machines, and to suppress the concentration of loads on specific computers. As a result, it is possible to effectively suppress an increase in the load on the computer and improve the processing efficiency of the virtual machine.

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram illustrating a configuration of a virtual machine management system. FIG. 2 is a functional block diagram illustrating a configuration of the virtual machine, and FIG. 3 is a diagram illustrating an example of information stored in the virtual machine. FIG. 4 is a functional block diagram illustrating the configuration of the management server, and FIGS. 5 to 7 are diagrams illustrating examples of information stored in the management server. 8 to 10 are flowcharts showing the operation of the virtual machine, and FIG. 11 is a flowchart showing the operation of the management server.

[Constitution]
As shown in FIG. 1, in this embodiment, host machines 1a, 2a, etc. (computers), virtual machines 2a, 2b, 2c, etc. that are built in the host machine and operate on the host machine, It is assumed that the system includes a management server 3 (management device) to be managed. In the example of this figure, the virtual machine 2a is operating on the host machine 1a, and the virtual machines 2b and 2c are operating on the host machine 1b. The host machines 1a and 1b and the management server 3 are connected to the management network, and the host machines 1a and 1b and the virtual machines 2a, 2b and 2c are managed by the management server 31. The virtual machines 2a, 2b, 2c and the terminals 4a, 4b, 4c are connected to the operation network, and the user can operate the virtual machines 2a, 2b, 2c by using the terminals 4a, 4b, 4c. It is. The number of host machines and virtual machines shown in FIG. 1 is an example, and more host machines and virtual machines may be provided.

  Next, the configuration of the virtual machine 2a constructed in the host machine 1a will be described with reference to FIGS. Since the virtual machines 2b and 2c constructed on the other host machine 1b have the same configuration, the description thereof is omitted.

  The virtual machine 2a is a virtual computer constructed using resources such as the CPU, memory, network, and disk of the host computer 1a by incorporating a predetermined program into the arithmetic unit of the host computer 1a. Then, as shown in FIG. 2, the virtual machine 2a includes a process load measuring unit 21, a process load predicting unit 22, a virtual machine load calculating unit 23, and a load information storage unit, which are constructed by incorporating a program. 24.

  The process load measuring unit 21 (process load measuring means) measures the load on the host machine 1a for each process that is a process (program) being executed on the virtual machine 2a. Specifically, first, the process load measuring unit 21 obtains a list of processes being executed on the virtual machine 2a and creates a list of monitored processes by comparing with a pre-stored list of processes not monitored. To do. Subsequently, the process load measurement unit 21 acquires the acquired load information (CPU usage rate, memory usage rate, network access load, disk access load, etc.) of the monitored process from the operating system in the host machine 1a, etc. A cost value representing the load of the process is calculated. The cost value is determined for each resource type (CPU, memory, network, disk, etc.), that is, for each hardware resource of the host machine 1a, based on the average usage rate / I / O amount per unit time. Calculate using suitable means. Then, the calculated cost value is recorded in the load information storage unit 24 for each process as process load information indicating the load for each resource of each process. Here, FIG. 3 shows an example of the stored cost value for each process. Note that the process load information measurement by the process load measuring unit 21 is executed for all processes at regular time intervals, for example.

  The program load measuring unit 21 also has a function of transmitting to the management server 3 a cost value that is a process load on each virtual machine measured as described above. As a result, the management server 3 stores the cost value, which is the load of the process operating for each virtual machine, and calculates the actual load of each virtual machine, as shown in FIG. Can do.

  The process load predicting unit 22 (process load specifying unit) first monitors the start or end of a process executed on the virtual machine 1a. The start / end process may be monitored by hooking the process start process and end process, or may be performed by obtaining a process list at regular intervals and examining the difference. When a new process is started on the virtual machine 1a or when a process being executed is ended, the cost value of the same process as the start / end process is obtained from the load information storage unit 24. Acquired as start / end process load information. Thereby, the predicted value of the load of the start / end process can be specified. At this time, the process load prediction unit 22 predicts the load only for the start / end processes that are not included in the preset list of processes not to be monitored.

  Further, the virtual machine load calculating unit 23 (virtual machine load calculating means) predicts and calculates the load of the virtual machine 2a, which is its own, using the predicted value of the load of the start / end process. Investigate whether the load on the entire virtual machine has changed before and after startup. Specifically, when a new process is started, the total cost value of the processes executed in the virtual machine before the start process is started is calculated as a load before starting the process, and further, The cost value of the startup process predicted by the process load prediction unit 22 is added to calculate the predicted load value of the virtual machine after the process startup. Similarly, when a new process ends, the total cost value of processes executed on the virtual machine before the end process ends is calculated as a load before the process ends. The cost value of the end process predicted by the process load prediction unit 22 is subtracted to calculate the predicted load value of the virtual machine after the process ends. At this time, the load of the virtual machine calculated as described above is obtained by adding the cost value of each process for each type (CPU, memory, network, disk, etc.). That is, the load on the virtual machine is calculated as a combination of the total cost values for each resource type (CPU, memory, network, disk, etc.) in each process executed on the virtual machine. However, the load of the virtual machine to be calculated is not limited to the calculation for each resource type, but can be calculated by adding the cost values of all the types or weighting set in advance for the cost value of each type You may calculate by adding up the value which considered.

  Then, the virtual machine load calculation unit 23 compares the load of the virtual machine before and after the process activation / termination calculated as described above, and if different, the predicted load value after activation / termination is calculated as the management server 3. Send to. Note that the comparison of the load of the virtual machine before and after the process start / end may be determined by comparing only the cost value in the resource type set as the priority type in advance, or all as described above. You may judge by comparing the value which totaled the cost value of this kind.

  Next, the configuration of the management server 3 will be described with reference to FIGS. The management server 3 is a general server computer provided with an arithmetic device and a storage device. And the management server 3 is provided with the virtual machine arrangement | positioning part 31 and the virtual machine movement part 32 which were constructed | assembled by incorporating a predetermined program in the equipped arithmetic unit as shown in FIG. . In addition, a host machine information storage unit 33 that stores host machine capacity information 34, virtual machine position information 35, and virtual machine load information 36 is formed in the equipped storage device.

  When the virtual machine placement unit 31 (virtual machine construction changing means) receives a notification that the load of the virtual machine 2a has changed from the host machine 1a as described above, the virtual machines 2a and 2b corresponding to the host machines 1a and 1b, respectively. , 2c operates to change the construction state. Specifically, the virtual machine placement unit 31 includes the new predicted load value of the notified virtual machine 2a, the predicted load values of all other active virtual machines 2b and 2c, and the host machine 1a, Based on the capacity value of 1b, allocation of the virtual machines 1a, 1b and the host machines 2a, 2b, 2c is determined so that the loads of the host machines 1a, 1b are leveled.

  An example of the host machine capacity information 34 is shown in FIG. As shown in this figure, the host machine capacity information 34 stores a preset upper limit value indicating the performance of the host machine. For example, when the upper limit of the predicted load value of the virtual machine is [CPU: 100, memory: 100, network: 100, disk: 100], the capacity value of the host machine capable of operating 20 virtual machines simultaneously. The values [CPU: 2000, memory: 2000, network: 2000, disk: 2000] are stored. The host machine capacity value may be set using a predetermined default value, but the system administrator may set an appropriate value according to the performance of the host machine.

  Further, as shown in FIG. 6, the virtual machine arrangement information 35 stores information representing the arrangement of virtual machines configured to operate on each host machine. Further, as shown in FIG. 7, the virtual machine load information 36 includes the load of each virtual machine transmitted from the virtual machine 2a or the like as described above, that is, the resource type of the process executed in each virtual machine. The cost value for each is stored. In FIG. 7, only the cost value of one virtual machine is shown as the virtual machine load information, but the cost values of other virtual machines are also stored. Then, by using the virtual machine arrangement information 35 and the virtual machine load information 36, the virtual machine arrangement unit 31 can grasp the load status for each host machine. For example, first, all the virtual machines operating on the host machine are specified from the virtual machine arrangement information of FIG. 6, and the loads of all the specified virtual machines are specified from the virtual machine load information of FIG. Then, calculate the load on each host machine. Note that the load on each host machine may be calculated only for one type of cost value among the preset resource types (CPU, memory, network, disk, etc.), or any type will be given priority. The total load of the host machine may be obtained by obtaining the sum of various cost values weighted to be used.

  Then, as described above, the virtual machine placement unit 31 relocates the virtual machine operating on the host machine from another host machine to another host machine when the load on the virtual machine changes as a trigger. To do. In other words, when the load for each host machine calculated as described above has a high ratio to the capacity value, the virtual machine is transferred from the host machine to another host machine having a low load for the capacity value. Rearrange to move Then, the placement information is stored as the virtual machine placement information 35 and the rearrangement process is instructed to the virtual machine moving unit 32. At this time, the rearrangement of the virtual machines is preferably executed so that the loads on all the host machines are leveled, that is, substantially equal, but is not necessarily limited to such execution. Relocation is performed so that the virtual machine is moved to another host machine with a low load so as to suppress at least the load of a specific host machine from being high.

  Then, the virtual machine moving unit 32 (virtual machine construction changing means) performs virtual on each host machine based on the arrangement stored in the virtual machine arrangement information 35 in accordance with the instruction from the virtual machine arrangement unit 31. Build a machine. For example, the virtual machine moving unit 32 moves the virtual machine to another host machine using a function of the virtual machine base. That is, the management server 2 has a function of moving a virtual machine on a predetermined host machine to another host machine. Note that the process of constructing a virtual machine on the host machine is a well-known technique, and thus detailed description thereof is omitted.

  Here, in the above, when there is a change in the load of the virtual machine from the virtual machine 2a, that fact is notified to the management server 3, and the management server 3 responds to the host machine according to the change in the load of the virtual machine. Although the case where the virtual machine is rearranged is illustrated, the timing for performing the virtual machine rearrangement is not limited to the above timing.

[Operation]
Next, the operation of the virtual machine management system configured as described above will be described. In the following, the operation of the virtual machine denoted by reference numeral 2a will be described as an example of the operation of the virtual machine, but other virtual machines operate in the same manner.

  First, the virtual machine 2a acquires a list of processes being executed on the virtual machine. At this time, the virtual machine 2a has a list of non-monitoring processes stored in advance as setting information, and creates a list of monitoring target processes by comparing with the acquired process list (step A1). Subsequently, the acquired load information (CPU usage rate, memory usage rate, network access load, disk access load, etc.) of the monitored process is acquired (step A2), and the cost value of the process is calculated (step A3). And the calculated cost value is recorded for every process in the load information storage part 24 (step A4, process load measurement process). At this time, the virtual machine 2a transmits the cost value of each process to the management server 3, and in response to this, the management server 3 shows the cost value of the process executed in each virtual machine as shown in FIG. Remember it.

  After that, for all the acquired monitoring target processes (No in Step A5), after executing the processing of Steps A2 to A4 (Yes in Step A5), “Sleep” is performed for a certain time, and the processing from Step A1 is performed again. repeat. Through the above processing, the cost value of the monitoring target process is updated at regular intervals. The processing described here may start from a completely empty state, a state in which a predetermined default value is read, or a state in which a cost value calculated and recorded by another virtual machine is read ( The load information storage unit data on another virtual machine may be exported and imported from the virtual machine.

  Subsequently or in parallel with the processing shown in FIG. 8, the virtual machine 2a monitors the start and end of processes on the virtual machine. As the monitoring means, the process start process and end process may be hooked, or the process list may be obtained at regular intervals and the difference may be examined. Since the virtual machine 2a stores a list of processes that are not monitored as described above, when a process is started or terminated, it is checked whether the process is a monitoring target. 9 or the notification process shown in FIG. FIG. 9 shows processing when a process is newly started, and FIG. 10 shows processing when a process that has been executed ends.

  If the virtual machine 2a detects that the process to be monitored has started, the cost value of the start process is acquired from the load information storage unit 24 (step B1, process load specifying step), and after the process is started A predicted load value of the virtual machine is calculated (step B2, virtual machine load calculation step). The predicted load value of the virtual machine after starting the process is obtained by adding the cost value of the process for each type (CPU, memory, network, disk, etc.) to the load value of the virtual machine before starting the process. As the predicted value before starting the process, the predicted load value of the virtual machine previously calculated and stored may be used as described above, or the load of the process actually executed on the virtual machine is measured. The load value of the virtual machine obtained by this may be used. If the load of the virtual machine before and after the process activation is different (Yes in Step B3), the predicted load value of the virtual machine after the process activation is notified to the management server 3 (Step B4).

  As described above, when the process to be monitored is terminated, first, the cost value of the process is acquired from the load information storage unit 24 (step C1, process load specifying step), and the load of the virtual machine before the process is terminated. By subtracting the cost value of the process from the value for each type (CPU, memory, network, disk, etc.), the predicted load value of the virtual machine after the end of the process is calculated (step C2, virtual machine load calculation step) . If the predicted load value of the virtual machine is different before and after the end of the process (Yes in Step C3), the predicted load value of the virtual machine after the end of the process is notified to the management server 3 (Step C4).

  After that, when the change of the predicted load value is notified from the virtual machine 2a as described above (step D1), the management server 3 and the new predicted load value of the notified virtual machine and all other active startups. Based on the predicted load value of the virtual machine and the capacity value of the host machine, the allocation of the virtual machine and the host machine is determined so that the load of each host machine is leveled (step D2). It is not necessary to change the allocation of the virtual machines when none of the host machines has a high load as determined in advance, or when the load on each host machine is not so different as the value as determined in advance. Do not do anything.

  When the virtual machine is moved to another host machine in the rearrangement process of the host machine, the virtual machine moving unit 32 moves the virtual machine to another host machine (step D3, virtual machine construction changing step).

  As described above, according to the present invention, when a change occurs in the operation state, such as when a process executed in a virtual machine starts / ends, the load of the start / end process is measured and stored in advance. By predicting based on the load value of the placed process, it is possible to quickly predict the load of the entire virtual machine. Therefore, it is possible to take a quick response such as rearranging the virtual machine for the host machine based on the predicted load of the virtual machine, and it is possible to suppress the load from being concentrated on a specific host machine. In other words, it is possible to take measures before actually measuring the load on the virtual machine, effectively suppressing an increase in the load on the host machine and improving the processing efficiency of the virtual machine. In particular, since the load for each process is predicted, the load on the virtual machine can be predicted with higher accuracy, and relocation can be performed appropriately.

  Here, although the case where a plurality of virtual machines are constructed on a plurality of host machines is illustrated above, the present invention is not limited to this. For example, the present invention can be applied to a case where a plurality of virtual machines are constructed on one host machine. In such a case, for example, when the load on the host machine becomes too high, the virtual machine is deleted. It should work. The present invention can also be applied to a case where a plurality of host machines are provided and one virtual machine is constructed on each host machine. In such a case, the virtual machines may be arranged based on the predicted load value so that the load on each host machine does not become too high according to the capacity value of the host machine.

  The present invention can be used for a system that operates by operating a virtual machine on a host machine, and has industrial applicability.

It is a block diagram which shows the structure of a virtual machine management system. It is a functional block diagram which shows the structure of a virtual machine. It is a figure which shows an example of the information memorize | stored in a virtual machine. It is a functional block diagram which shows the structure of a management server. It is a figure which shows an example of the information memorize | stored in a management server. It is a figure which shows an example of the information memorize | stored in a management server. It is a figure which shows an example of the information memorize | stored in a management server. It is a flowchart which shows operation | movement of a virtual machine. It is a flowchart which shows operation | movement of a virtual machine. It is a flowchart which shows operation | movement of a virtual machine. It is a flowchart which shows operation | movement of a management server.

Explanation of symbols

1a, 1b Host machines 2a, 2b, 2c Virtual machine 3 Management servers 4a, 4b, 4c Terminal 21 Process load measurement unit 22 Process load prediction unit 23 Virtual machine load calculation unit 24 Load information storage unit 31 Virtual machine placement unit 32 Virtual machine Moving unit 33 Host machine information storage unit 34 Host machine capacity information 35 Virtual machine arrangement information 36 Virtual machine load information

Claims (13)

A virtual machine management system for managing virtual machines built in a computer,
A process load measuring means for measuring a load on the computer for each process being executed on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of the process executed on the virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculation means for calculating a load on the computer of the virtual machine based on the process load information and the start / end process load information;
A virtual machine management system comprising: Based on the load of the virtual machine calculated by the virtual machine load calculation means, the virtual machine construction change means for changing the construction state of the virtual machine in the computer,
The virtual machine management system according to claim 1. The virtual machine load calculating means calculates the load of the virtual machine before and after the start / end process of the virtual machine is started or ended, and the calculated load of the virtual machine is the start of the process or If there is a change before and after the end, notify the virtual machine construction change means to that effect,
When the virtual machine construction changing means receives a notification from the virtual machine load calculating means that the load of the virtual machine has changed before and after starting or ending the process, the virtual machine construction changing means Change the build state,
The virtual machine management system according to claim 2. A plurality of the virtual machines can be constructed in each of the plurality of computers,
The virtual machine construction changing means rearranges the virtual machine so as to change the arrangement of the virtual machine with respect to the plurality of computers.
4. The virtual machine management system according to claim 2, wherein the virtual machine management system is a virtual machine management system. The virtual machine construction change means changes the arrangement of the virtual machines with respect to the plurality of computers so that the load applied to each computer is leveled by the virtual machines.
The virtual machine management system according to claim 4. The load of the virtual machine is a load on the resources equipped in the computer on which the virtual machine is constructed.
6. The virtual machine management system according to claim 1, 2, 3, 4 or 5. A host machine that is a computer on which the virtual machine is constructed, and a management device connected to the host machine,
The host machine comprises the process load measuring means, the process load specifying means, and the virtual machine load calculating means;
The management device includes the virtual machine construction change unit,
The virtual machine management system according to claim 2, 3, 4, 5, or 6. A computer on which a virtual machine is built,
A process load measuring means for measuring a load on the computer for each process being executed on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of the process executed on the virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculation means for calculating a load on the computer of the virtual machine based on the process load information and the start / end process load information;
A computer comprising: On the computer where the virtual machine is built,
A process load measuring means for measuring a load on the computer for each process being executed on the virtual machine and storing it as process load information;
Process load specifying means for detecting the start or end of the process executed on the virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
Virtual machine load calculation means for calculating a load on the computer of the virtual machine based on the process load information and the start / end process load information;
A program to realize A management device connected to a computer on which a virtual machine is constructed,
Process load measuring means for measuring the load on the computer for each process being executed on the virtual machine and storing it as process load information, and starting or terminating the process executed on the virtual machine. Based on the process load specifying means for detecting and specifying the load of the start / end process as start / end process load information based on the process load information, based on the process load information and the start / end process load information A virtual machine load calculating means for calculating a load on the computer of the virtual machine,
Based on the load of the virtual machine calculated by the virtual machine load calculation means of the computer, the virtual machine construction change means for changing the construction state of the virtual machine in the computer,
Management device characterized by that. To the management device connected to the computer where the virtual machine is built,
Process load measuring means for measuring the load on the computer for each process being executed on the virtual machine and storing it as process load information, and starting or terminating the process executed on the virtual machine. Based on the process load specifying means for detecting and specifying the load of the start / end process as start / end process load information based on the process load information, based on the process load information and the start / end process load information A virtual machine load calculating means for calculating a load on the computer of the virtual machine,
A program for realizing virtual machine construction changing means for changing a virtual machine construction state in the computer based on the load of the virtual machine calculated by the virtual machine load calculating means of the computer. A virtual machine management method for managing a virtual machine built in a computer,
A process load measuring step of measuring a load on the computer for each process being executed on the virtual machine and storing it as process load information;
A process load specifying step of detecting the start or end of the process executed on the virtual machine and specifying the load of the start / end process as start / end process load information based on the process load information;
A virtual machine load calculating step of calculating a load on the computer of the virtual machine based on the process load information and the start / end process load information;
A virtual machine management method comprising: Based on the load of the virtual machine calculated in the virtual machine load calculation step, the virtual machine construction change step of changing the construction state of the virtual machine in the computer,
The virtual machine management method according to claim 12.

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