JP7230632B2 - Information processing device, system, program and control method - Google Patents

Description

The present invention relates to an information processing device, system, program, and control method.

As a technique for distributing the load of a server, Patent Literature 1 discloses a system in which servers connected to a network cooperate to execute processing. Japanese Patent Laid-Open No. 2002-200002 discloses a technique for allowing another device to perform processing on behalf of the other device. Japanese Patent Application Laid-Open No. 2002-200003 discloses a technique of dividing a process among a plurality of processing nodes and adjusting the process to be allocated to the processing node by the processing node that requested the process.

WO2017/145389 JP 2006-268166 A Japanese Patent Application Laid-Open No. 2006-201896

Even if a requesting device requests processing to a plurality of other devices in order to distribute the processing load, there is a problem that a load related to processing allocation is generated and the load on the requesting device is not reduced so much. rice field.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an information processing apparatus, system, program, and control method that can further reduce the load in distributed processing.

To achieve the above object, the present invention provides a receiving means for receiving a proxy execution request requesting proxy execution of a process of an information processing apparatus that is a request source, and when the receiving means receives the proxy execution request, a request execution determining means for determining whether or not a part or all of the processing of the original information processing device can be executed by proxy; proxy execution means for executing the process of (1); distribution determination means for determining whether or not the processing target information to be the target of the process to be executed by proxy can be distributed to a plurality of information processing apparatuses; and distribution means for distributing the processing target information to an information processing apparatus that performs proxy execution when the determination is made.

In order to achieve the above object, according to another aspect of the present invention, there is provided a system including a plurality of information processing apparatuses, wherein an information processing apparatus requesting proxy execution of processing is a proxy requesting proxy execution of processing. An information processing apparatus having transmitting means for transmitting an execution request and receiving the proxy execution request includes: receiving means for receiving the proxy execution request; execution determining means for determining whether or not a part or all of the processing of the processing device can be executed by proxy; proxy execution means for execution; distribution determination means for determining whether processing target information to be processed by proxy execution can be distributed to a plurality of information processing devices; and a distribution means for distributing the processing target information to the information processing apparatus that performs proxy execution.

In order to achieve the above object, according to another aspect of the present invention, a computer receives a proxy execution request for requesting proxy execution of a process of an information processing apparatus that is a request source; When the proxy execution request is received, an execution determination step of determining whether or not a part or all of the processing of the information processing device of the request source can be executed by proxy; a proxy execution step of executing the processing of the information processing device that is the request source; a distribution determination step of determining whether or not the processing target information to be processed by proxy can be distributed to a plurality of information processing devices; and a distribution step of distributing the information to be processed to an information processing apparatus that performs proxy execution when the distribution determination step determines that the information can be distributed.

In order to achieve the above object, according to another aspect of the present invention, there is provided a control method for an information processing apparatus, comprising a receiving step of receiving a proxy execution request requesting proxy execution of a process of a request source information processing apparatus. an execution determination step of determining whether or not a part or all of the processing of the information processing apparatus that is the request source can be executed by proxy when the proxy execution request is received by the receiving step; A proxy execution step of executing the processing of the information processing device of the request source when it is determined to be executable, and determining whether or not the processing target information to be the target of the processing to be executed by proxy can be distributed to a plurality of information processing devices. and a distribution step of distributing the processing target information to an information processing apparatus that performs proxy execution when the distribution determination step determines that the information can be distributed.

ADVANTAGE OF THE INVENTION According to this invention, the effect that the load in distributed processing can be reduced more is acquired.

1 is a diagram showing a configuration example of an information processing system showing the configuration of an embodiment of the present invention; FIG. It is a block diagram which shows the structure of a server. It is a figure which shows server list DB, log|history DB, and a message format. FIG. 11 is a sequence diagram showing an application example (Part 1); FIG. 11 is a sequence diagram showing an application example (part 2); FIG. 11 is a sequence diagram showing an application example (Part 3); 10 is a flow chart showing the processing flow of the request source server; FIG. 11 is a flow chart showing the flow of processing of the receiving server when receiving a proxy execution request; FIG. FIG. 10 is a flow chart showing the flow of processing of the receiving server after transmitting a proxy execution response; FIG. FIG. 10 is a flow chart showing the flow of processing of the receiving server after transmitting a proxy execution response; FIG. It is a figure which shows the minimum structure of the information processing apparatus by this embodiment.

An information processing system according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration example of an information processing system 100 showing the configuration of one embodiment of the present invention. In the present embodiment, as an example of an information processing system, a system that turns on a patrol light (registered trademark) when a predetermined subject is included in an image captured by a camera is used as an example.

The information processing system 100 includes a backend server 1 and multiple servers 2A, 2B, 2C, and 2D. Hereinafter, any one of the servers 2A, 2B, 2C, and 2D will be referred to as the server 2 unless otherwise distinguished. The server 2 is an example of an information processing device. Also, the server 2 is assumed to be an edge server. Edge servers generally have lower processing power than other servers.

Cameras 102A, 102B, 102C and 102D are connected to servers 2A, 2B, 2C and 2D, respectively. Patlites 202A, 202B, 202C and 202D are connected to the servers 2A, 2B, 2C and 2D, respectively. Hereinafter, any one of the cameras 102A, 102B, 102C, and 102D will be referred to as a camera 102 unless otherwise distinguished. Any one of the Patlites 202A, 202B, 202C, and 202D will be referred to as the Patlite 202 unless otherwise distinguished.

The backend server 1 and the server 2 are connected by a network 10 and can communicate with each other. The backend server 1 provides the server 2 with server information, which will be described later, for communicating with other servers 2 .

Server 2 controls camera 102 and patrol light 202 . The server 2 executes image determination processing for determining whether or not a predetermined subject is included in image data representing an image captured by the camera 102 . A processing result of the image determination processing indicates whether or not a predetermined subject is included. The server 2 turns on the patrol light 202 when the predetermined subject is included as a result of the image determination processing. The server 2 can request another server 2 to execute the image determination process by proxy. A proxy execution request to another server 2 may be expressed as a proxy execution request.

The server 2 that has received the proxy execution request determines whether part or all of the processing can be executed by proxy. When the server 2 determines that proxy execution is impossible, the server 2 transfers the proxy execution request to another server 2 different from the server 2 of the request source.

On the other hand, when it is determined that part or all of the processing can be executed by proxy, the server 2 operates in one of three operation modes. Main processes executed by the server 2 regarding proxy execution include the above-described image determination process, distribution process, and process result transmission process. Among these, the distribution processing is processing for distributing processing target information (in this embodiment, image data representing an image captured by the camera 102) to be subjected to image determination processing to several servers. The process result transmission process is a process of transmitting the process result of the image determination process to the server 2 that is the request source. When the server 2 distributes the image information to the other servers 2 by the distribution process, in the process result transmission process, the server 2 receives the process result from the distributed server 2 and transmits the received process result to the request source server 2. do.

There are four operating modes: full processing mode, partial processing (with distribution) mode, partial processing (without distribution) mode, and distribution mode. Of these, the all processing mode is a mode in which all the processing requested by the proxy execution request is processed by its own server. When operating in the all processing mode, the server 2 alone executes the image determination processing and the processing result transmission processing.

The partial processing (with distribution) mode is a mode in which a part of the image determination processing is executed and processing for distributing the processing target information to the other servers 2 is executed. For example, assume that server A performs 50% of the image determination processing and server B performs the remaining 50%. When server B operates in partial processing (with distribution) mode, server B receives processing target information from the requesting server, distributes 50% to server A, and distributes 50% to server A. image judgment processing.

The partial processing (no distribution) mode is a mode in which a part of the image determination processing is executed, but the distribution processing is not executed. For example, the server A is operating in partial processing (no distribution) mode.

Distribution mode is a mode in which only distribution processing is performed. For example, assuming that server B operates in partial processing (no distribution) mode, a proxy execution request indicating that server A can execute 50% of processing and server B can execute 50% of processing is transferred to server C. Since 100% of the image determination processing is performed by servers A and B in total, server C has no room to perform image determination processing by itself, so it determines whether to operate in the distribution mode. Become. When the server C operates in the distribution mode, the server C receives the processing target information from the request source server and distributes it to the servers A and B 50% each. Server C receives the processing results from servers A and B, and executes processing result transmission processing.

FIG. 2 is a block diagram showing the configuration of the server 2. As shown in FIG. The server 2 includes a message reception unit 501, a result confirmation unit 502, an instruction acquisition unit 503, a determination unit 504, a device instruction creation unit 505, a status update unit 506, a status reflection unit 507, a message transmission unit 509, a request creation unit 510, an instruction It includes a creation unit 511 , a result creation unit 512 , a process execution unit 514 , a light control unit 516 and an image acquisition unit 515 . Server 2 includes server list DB 508 and history DB 513 . DB in the server list DB 508 and the history DB 513 indicates a database. The server list DB 508 is a database used when determining the server 2 to which the proxy execution request is to be sent, and details of which will be described later. The history DB 513 is a database showing an overview of executed processing, and the details will be described later.

A message receiving unit 501 receives various types of information from the network 10 . When the message reception unit 501 receives the processing result of the image determination processing from another server 2 , the message reception unit 501 outputs the processing result to the result confirmation unit 502 . Since server information about the state and performance of the server 2 that executed the process is received together with the process result, the server information is also output. Details of the server information will be described later. When receiving processing target information from another server 2 , the message reception unit 501 outputs the information to the instruction acquisition unit 503 . The instruction acquisition unit 503 outputs the acquired processing target information to the processing execution unit 514 . When the message receiving unit 501 receives a proxy execution request from another server 2 , the message receiving unit 501 outputs the request to the determination unit 504 . Since the server information of the other server 2 is received together with the proxy execution request, the server information is also output.

The result confirmation unit 502 confirms the processing result and outputs the processing result to the device instruction generation unit 505 . The device instruction creation unit 505 creates an instruction for the patrol light 202 based on the processing result, and outputs the instruction to the light control unit 516 . The light control unit 516 controls the patrol lights 202 based on the instructions. Result confirmation unit 502 also outputs server information to status update unit 506 . A status update unit 506 updates the server list DB 508 based on the server information.

Upon receiving the proxy execution request, the determination unit 504 determines whether part or all of the processing of the request source server 2 can be executed by proxy. Furthermore, the determination unit 504 determines whether or not the processing target information can be distributed to a plurality of servers 2 . Also, the determination unit 504 outputs the server information to the state reflection unit 507 . The state reflection unit 507 reflects the server information on the server list DB 508 .

A message transmission unit 509 transmits various types of information to the network 10 . When acting as the request source server 2 , the request creation unit 510 refers to the server list DB 508 and the history DB 513 and transmits the proxy execution request to the other server 2 via the message transmission unit 509 . Further, when the determination result by the determination unit 504 indicates that it is necessary to transmit a proxy execution request to another server 2 , the request creation unit 510 refers to the server list DB 508 and the history DB 513 to send the proxy execution request to the other server 2 . The request is forwarded by the message sending unit 509 .

The device instruction creation unit 505 , when operating as the request source server 2 , transfers the processing target information to the other server 2 using the message transmission unit 509 . Note that the processing target information is acquired by the image acquisition unit 515 . The result generation unit 512 transmits the processing result of the image determination processing executed by proxy through the message transmission unit 509 . Further, when distributing the processing target information to other servers 2 , the result creation unit 512 transmits the processing target information to be distributed by the message transmission unit 509 .

The processing execution unit 514 executes image determination processing on the processing target information acquired by the image acquisition unit 515 and the processing target information output by the instruction acquisition unit 503 . A processing result of the image determination processing is output to the result generation unit 512 . The processing execution unit 514 creates an instruction for the patrol light 202 based on the processing result of the image determination processing, and outputs the instruction to the light control unit 516 .

The process execution unit 514 outputs the execution result (data size, etc.) of the image determination process to the history DB 513 . The processing execution unit 514 divides the processing target information output by the instruction acquisition unit 503 so as to be distributed to the other servers 2 . The divided processing target information is output to the result creation unit 512 .

The image acquisition unit 515 outputs image data representing an image captured by the camera 102 to the processing execution unit 514 and provides the image data to each unit via the server list DB 508 . The light control unit 516 controls the patrol light 202 and acquires the state of the patrol light 202 based on the instruction.

Next, the server list DB 508 and the history DB 513 described above will be described. FIG. 3A is a diagram showing an example of the server list DB 508. As shown in FIG. The server list DB 508 includes server names, IP addresses, performance information, statuses, and last update times. Of these, the server name, IP address, performance information, and status are server information.

A server name indicates the name of the server 2 . IP address indicates the IP address of the server 2 . The performance information includes information on the operating frequency (Hz) of the CPU (Central Processing Unit) and the number of cores. A state indicates the state of the server 2 . The states are Idle, Controlling, and Executing on behalf of. Of these, "during control" indicates a state in which its own processing is being executed instead of being executed by proxy. During proxy execution indicates a state in which processing of another server 2 is being executed. The last update time indicates the time when the server information was updated. In addition to the time, the year, month, and day may be stored.

In FIG. 3A, for example, server D has an IP address of 192.168.0.3, a CPU operating frequency of 1.5 GHz, and four cores. You can see that the state is proxy running.

FIG. 3B is a diagram showing an example of the history DB 513. As shown in FIG. The history DB 513 is composed of data size, CPU usage rate, and processing time. The data size indicates the data size of the information to be processed, and the unit is kilobytes, megabytes, or the like. The CPU usage rate indicates the CPU usage rate when the image determination process is executed on the processing target information, and the unit is %. The processing time is the time required to execute the image determination processing, and the unit is seconds. It can be seen that the processing capacity of the server 2 having the history shown in FIG. 3(B) is about 100 KB/sec if the CPU usage rate is 100%.

FIG. 3C is a diagram showing the message format of the proxy execution request. A proxy execution request is composed of a requester, a processing amount, a processing time, and zero or more pieces of proxy execution information. Among these, the request source is the IP address of the server 2 that is the request source. The amount of processing is the data size of the processing target information for which proxy execution is requested. The processing time is the time required for image determination processing specified by the requester, and the processing is required to be completed within that time.

The proxy execution information is composed of server information and processing amount. Proxy execution information is provided for the number of servers 2 that have received proxy execution requests. The proxy execution information is transferred to another server 2 by adding new proxy execution information to the original message received by the server 2 . The server information in the proxy execution information is the server information of the server 2 that received the proxy execution information, and the processing amount is the processing amount of the server 2 indicated in the server information. If the receiving server 2 does not perform proxy execution at all, it sets the processing amount to 0 and adds proxy execution information.

The requester refers to the server list DB 508 to determine the destination of the proxy execution request. This server list DB 508 is updated when the server 2 is activated and when a proxy execution request is received, and is reflected when a processing result is received. When the server 2 is activated, the server information of the other server 2 is provided from the backend server 1 described above, so the server list DB 508 is created at this time. The server information provided by the backend server 1 may be the server information of the server 2 adjacent to the server 2 provided or the server information of the server 2 set by the system administrator. Note that the adjacent server 2 means, for example, the server 2 that is physically closest, the server 2 with little network delay, or the server 2 connected to the same hub.

Further, according to this embodiment, the request source server 2 does not need to store the server information of the server 2 to be further transferred by the server 2 to which the request source has transmitted the proxy execution request. Further, since the server list DB 508 stores server information provided by the backend server 1 and server information added when a proxy execution request is received, unnecessary server information is not stored.

As a result, the server 2 does not need to store a large amount of server information, so that the hardware resources of the server 2 can be used effectively, and a server that stores all server information is not required.

When a plurality of servers 2 are stored in the server list DB 508, the request source server 2 selects an idle server 2 or a server 2 with good performance (for example, the product of the operating frequency and the number of cores) as a transmission destination of the proxy execution request. large, etc.) server 2 is determined preferentially.

The server 2 that has received the proxy execution request determines whether or not the proxy execution is possible based on the processing amount of the proxy execution request and its own state (in other words, it determines the processing capacity (0% to 100%)). ). For example, when executing the image determination processing by the proxy execution request, it is determined that the proxy execution is possible if either of the following conditions (a) or (b) is satisfied.
(a) Even if the server 2 executes the calculations that originally need to be executed, the control processing of the patrol light 202, and the image determination processing by proxy execution request in parallel, the real-time performance of various controls in the server 2 is not impaired. (b) The image determination process must be completed within a time period during which the server 2 does not need to perform calculations or control processes for the patrol lights 202.

In the case of (a), for example, the server 2 refers to the history DB 513 and determines whichever of the maximum CPU usage rate when executing the image determination process and the maximum CPU usage rate during control of the patrol light 202 is greater. Find the CPU usage rate of the other side. It is determined that (a) is satisfied when the CPU usage rate is 100% or less even after combining this CPU usage rate and the CPU usage rate by the proxy execution when the proxy execution is performed from now on. Condition (b) is effective when, for example, it is known in advance that the idle state will continue for about 10 minutes.

Next, specific application examples and the flow of processing will be described using sequence diagrams and flowcharts. In the following description, for the sake of clarity, the server 2 that is the request source will be referred to as the request source server, and the servers 2 that receive the proxy execution request will be referred to as servers A, B, C, the receiving server, and the like.

FIG. 4 is a sequence diagram showing an application example (Part 1). The request source server transmits a proxy execution request to server A (step S101). Server A, which has received the proxy execution request, determines that execution is not possible, and transfers the proxy execution request to server B (step S102). Server B, which has received the proxy execution request, determines that all processing can be executed by proxy, and transmits a proxy execution response to the request source server (step S103). As a result, server B operates in full processing mode.

The requesting server transmits the processing target information to the server B (step S104). Server B executes the image determination processing as a proxy, transmits a result notification notifying the processing result to the request source server (step S105), and ends the processing. In the application example of FIG. 4, servers A and B can update the server list DB 508 when receiving a proxy execution request, and the requesting server can update the server list DB 508 when receiving a proxy execution response or result notification. The server list DB 508 can be similarly updated in other application examples that will be described below.

FIG. 5 is a sequence diagram showing an application example (part 2). The request source server transmits a proxy execution request to server A (step S201). Server A, which has received the proxy execution request, determines that 30% of the processing amount can be executed, and transfers the proxy execution request to server B (step S202). Server B, which has received the proxy execution request, determines that 70% of the remaining processing amount can be proxy executed, further determines that distribution is possible, and transmits a proxy execution response to the request source server (step S203). As a result, server A operates in partial processing (without distribution) mode, and server B operates in partial processing (with distribution) mode.

The requesting server transmits the processing target information to the server B (step S204). Server B transmits 30% of the processing target information to server A (step S205), and executes image determination processing for 70% as a proxy. Server A performs image determination processing for 30% by proxy, and transmits a result notification to server B (step S206). Server B transmits a result notification of its own processing result and server A's processing result to the requesting server (step S207), and ends the process.

FIG. 6 is a sequence diagram showing an application example (No. 3). The request source server transmits a proxy execution request to server A (step S301). Server A, which has received the proxy execution request, determines that 30% of the processing amount can be executed, and transfers the proxy execution request to server B (step S302). Server B, which has received the proxy execution request, determines that 70% of the remaining processing amount can be proxy executed, but determines that it cannot be distributed, and transfers the proxy execution request to server C (step S303).

Server C, which has received the proxy execution request, determines that distribution is possible, and transmits a proxy execution response to the requesting server (step S304). As a result, Server A and Server B operate in partial processing (no distribution) mode, and Server C operates in distribution mode.

The requesting server transmits the processing target information to the server C (step S305). Server C transmits 30% of the processing target information to server A (step S306), and transmits 70% of the processing target information to server B (step S307). Server A executes 30% of the image determination processing by proxy, and transmits a result notification to server C (step S308). Server A executes 30% of the image determination processing by proxy, and transmits a result notification to server C (step S308). Server B executes 70% of the image determination processing by proxy, and transmits a result notification to server C (step S309). Server C transmits a result notification notifying the processing result of server A and the processing result of server B to the requesting server (step S310), and ends the process.

As shown in the application example described above, the request source server only needs to transmit the proxy execution request, transmit the processing target information, and wait for the notification of the result. In this way, the request source server does not need to repeatedly search for the request destination, and there is no load associated with allocating the processing to be executed by the receiving server (load due to distribution of processing target information, etc.). can be further reduced.

Also, the receiving server can flexibly respond to the performance and status of the receiving server, such as executing proxy processing within the scope of the receiving server's ability, or executing only distribution. Distributed processing can be performed in a more practical manner.

Next, the processing flow of the request source server and the receiving server will be described using flowcharts. FIG. 7 is a flow chart showing the processing flow of the request source server. The requesting server refers to the server list DB 508 and determines the receiving server that requests proxy execution (step S401). The request source server transmits a proxy execution request to the determined receiving server (step S402).

The request source server waits for a proxy execution response from the receiving server, and upon receiving the proxy execution response (step S403: YES), transmits processing target information to the receiving server that has transmitted the proxy execution response (step S404). The requesting server waits for the result notification from the receiving server, and when the result notification is received (step S405: YES), executes control according to the processing result (step S406), and ends the processing.

As shown in FIG. 7, the request source server only needs to send the proxy execution request, send the processing target information, and wait for the notification of the result. Moreover, as shown in the flowchart, the processing is very light, so the load on the request source server can be further reduced.

Next, the processing flow of the receiving server will be described. FIG. 8 is a flow chart showing the processing flow of the receiving server when receiving a proxy execution request. When the receiving server receives the proxy execution request, if there is proxy execution information, the receiving server obtains the total processing amount indicated in the proxy execution information, and determines whether the remaining processing amount is other than 0%. If there is no proxy execution information, the remaining processing amount is 100%.

If the remaining processing amount is other than 0% (step S501: YES), the receiving server determines the processable amount (step S502), and branches according to the determined processable amount (step S503). If the processing capacity is 0%, that is, if the processing cannot be performed at all, the receiving server refers to the server list DB 508 and determines the transfer destination of the proxy execution request (step S504). The receiving server transfers the proxy execution request to the determined transfer destination (step S505), and ends the process.

If it is determined in step S502 that the processable amount is 100%, the receiving server operates in all processing mode (step S506), transmits a proxy execution response to the requester (step S511), and ends the process.

In step S502, if it is determined that the processable amount is partial (greater than 0% and less than 100%), the receiving server determines whether or not the remaining processing amount becomes 0 due to the processable amount ( step S507). When the remaining processing amount becomes 0, the receiving server determines whether or not distribution processing of the processing target information is also possible (step S508). If distribution processing is also possible (step S508: YES), the receiving server operates in partial processing (with distribution) mode (step S509), transmits a proxy execution response to the request source (step S511), and executes processing. finish.

If distribution processing is not possible (step S508: NO), the receiving server operates in a partial processing (no distribution) mode (step S510), refers to the server list DB 508, and issues a proxy execution request. is determined (step S504). The receiving server transfers the proxy execution request to the determined transfer destination (step S505), and ends the process.

At step S501, if the remaining processing amount is 0% (step S501: NO), the receiving server determines whether or not it can operate in the distribution mode (step S512). If it cannot operate in the distribution mode (step S512: NO), the receiving server refers to the server list DB 508 and determines the transfer destination of the proxy execution request (step S504). The receiving server transfers the proxy execution request to the determined transfer destination (step S505), and ends the process.

On the other hand, if it is possible to operate in the distribution mode (step S512: YES), the receiving server operates in the distribution mode (step S513), transmits a proxy execution response to the request source (step S511), and ends the process. .

Next, with reference to FIG. 9, the processing flow of the receiving server operating in the full processing mode or the partial processing (with distribution) mode will be described. FIG. 9 is a flow chart showing the processing flow of the receiving server after transmitting the proxy execution response. When the receiving server receives the processing target information (step S601: YES), it determines whether or not it is operating in all processing modes (step S602).

When operating in all processing mode (step S602: YES), the receiving server executes proxy processing (step S607), transmits a result notification to the requesting server (step S606), and ends the processing. .

If it is not operating in the full processing mode (step S602: NO), it is operating in the partial processing (with distribution) mode, so the receiving server transmits a data notification to the distribution destination (step S604). Next, the receiving server executes proxy processing (step S604), waits for a result notification from the distribution destination, and receives the result notification (step S605). is sent to the request source server (step S606), and the process ends.

In this way, even when distributed processing is performed by a plurality of servers 2 , the processing result is transmitted by one server 2 . Therefore, the request source server does not have to wait for the processing result from each of the servers 2 that perform proxy execution, so that the load related to the distributed processing can be further reduced.

Next, with reference to FIG. 10, the processing flow of the receiving server operating in the distribution mode will be described. FIG. 10 is a flow chart showing the processing flow of the receiving server after transmitting the proxy execution response. When the receiving server receives the processing target information (step S701: YES), it transmits a data notification to the distribution destination (step S702). Next, the receiving server waits for a result notification from the distribution destination, and upon receiving the result notification (step S703: YES), transmits a result notification notifying the processing result of the distribution destination to the request source server (step S704), and performs processing. exit.

In this way, by enabling execution of only distribution, the server 2 that receives the proxy execution request can flexibly decide whether to execute the image determination process or to execute only distribution according to the load. can be determined to

In the above-described embodiment, a server that controls a camera and a patrol light was used as an example, but the present invention is not limited to this. For example, the device to be controlled may be any device, such as a flapper gate, as long as the device can be controlled by the server.

FIG. 11 is a diagram showing the minimum configuration of an information processing device 600 according to this embodiment. The information processing apparatus 600 according to the present embodiment may have at least reception means 601 , execution determination means 602 , proxy execution means 603 , distribution determination means 604 and distribution means 605 .

The receiving unit 601 receives a proxy execution request for requesting proxy execution of processing of the information processing apparatus that is the request source. When the reception unit 601 receives the proxy execution request, the execution determination unit 602 determines whether or not part or all of the processing of the request source information processing apparatus can be executed by proxy. The proxy executing means 603 executes the process of the information processing apparatus of the request source when the execution determining means 602 determines that the proxy execution is possible. The distribution determination unit 604 determines whether or not the processing target information to be processed by proxy can be distributed to a plurality of information processing apparatuses. When the distribution determination unit 604 determines that the information can be distributed, the distribution unit 605 distributes the information to be processed to the information processing apparatus that performs proxy execution.

The information processing apparatus 600 described above has a computer system inside. The processes shown in FIGS. 4 to 10 described above are stored in a computer-readable recording medium in the form of a program, and the above processes are performed by reading and executing this program by a computer. . Here, the computer-readable recording medium refers to magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, semiconductor memories, and the like. Alternatively, the computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

11 is recorded in a computer-readable recording medium, and the program recorded in the recording medium is read into a computer system and executed, thereby performing the functions of the information processing apparatus 600 shown in FIG. - The process shown in Figure 10 may be performed. It should be noted that the "computer system" referred to here includes hardware such as an OS and peripheral devices. Also, the "computer system" includes a WWW system provided with a home page providing environment (or display environment). The term "computer-readable recording medium" refers to portable media such as flexible discs, magneto-optical discs, ROMs and CD-ROMs, and storage devices such as hard discs incorporated in computer systems. In addition, "computer-readable recording medium" means a volatile memory (RAM) inside a computer system that acts as a server or client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. , includes those that hold the program for a certain period of time.

Further, the above program may be transmitted from a computer system storing this program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in a transmission medium. Here, the "transmission medium" for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the program may be for realizing part of the functions described above. Further, it may be a so-called difference file (difference program) that can realize the above-described functions in combination with a program already recorded in the computer system.

The present invention relates to an information processing device, system, program, and control method.

1 backend server 2 server 10 network 102 camera 202 patrol light 501 message reception unit 502 result confirmation unit 503 instruction acquisition unit 504 determination unit 505 device instruction creation unit 506 status update unit 507 status reflection unit 508 server list DB
509 Message sending unit 510 Request creating unit 511 Instruction creating unit 512 Result creating unit 513 History DB
514 process execution unit 515 image acquisition unit 516 light control unit 600 information processing device 601 reception means 602 execution determination means 603 proxy execution means 604 distribution determination means 605 distribution means

Claims (9)

Receiving means for receiving a proxy execution request for requesting proxy execution of processing of the request source information processing device;
execution determining means for determining, when the proxy execution request is received by the receiving means, whether part or all of the processing of the request source information processing apparatus can be executed by proxy;
a proxy executing means for executing the processing of the information processing apparatus that is the request source when the execution determining means determines that the proxy execution is possible;
distribution determination means for determining whether or not processing target information to be processed by proxy can be distributed to a plurality of information processing apparatuses;
a distribution means for distributing the information to be processed to an information processing apparatus that performs proxy execution when the distribution determination means determines that the information can be distributed;
Information processing device having 2. The information processing according to claim 1, wherein, when said execution determining means determines that proxy execution is impossible, said proxy execution request is transferred to another information processing apparatus different from said request source information processing apparatus. Device. When the execution determination means determines that the part of the process is executable, the proxy execution request indicating that the part of the process is executable is sent from a different information processing apparatus as the request source. 3. The information processing apparatus according to claim 1, capable of being transferred to another information processing apparatus. 4. The information processing apparatus according to claim 2, wherein the proxy execution request is transferred based on a list indicating the performance and status of information processing apparatuses to which the proxy execution request can be transferred. When the execution determination means determines that a part of the process can be executed by proxy and the distribution determination means determines that it can be distributed, the process of the information processing apparatus that is the request source is executed, and 5. The information processing apparatus according to any one of claims 1 to 4, wherein the information to be processed is distributed to the information processing apparatus that performs proxy execution. When the information to be processed is distributed by the distribution means to the information processing device that performs proxy execution, the processing result of the proxy processing is received from the distributed information processing device, and the processing result is sent to the information processing of the request source. 6. The information processing apparatus according to any one of claims 1 to 5, which transmits to the apparatus. A system including a plurality of information processing devices,
An information processing device that requests proxy execution of processing,
a transmission means for transmitting a proxy execution request for requesting proxy execution of processing;
The information processing device that receives the proxy execution request,
receiving means for receiving the proxy execution request;
execution determining means for determining, when the proxy execution request is received by the receiving means, whether part or all of the processing of the request source information processing apparatus can be executed by proxy;
a proxy executing means for executing the processing of the information processing apparatus that is the request source when the execution determining means determines that the proxy execution is possible;
distribution determination means for determining whether or not processing target information to be processed by proxy can be distributed to a plurality of information processing apparatuses;
a distribution means for distributing the information to be processed to an information processing apparatus that performs proxy execution when the distribution determination means determines that the information can be distributed;
A system with to the computer,
a receiving step of receiving a proxy execution request for requesting proxy execution of a process of an information processing device that is a request source;
an execution determination step of determining, when the proxy execution request is received by the receiving step, whether or not part or all of the processing of the information processing device that is the request source can be executed by proxy;
a proxy execution step of executing a process of the information processing device that is the request source when the execution determination step determines that proxy execution is possible;
a distribution determination step of determining whether or not processing target information to be processed by proxy can be distributed to a plurality of information processing apparatuses;
a distribution step of distributing the processing target information to an information processing apparatus that performs proxy execution when the distribution determination step determines that the information can be distributed;
program to run the A control method for an information processing device,
a receiving step of receiving a proxy execution request for requesting proxy execution of a process of an information processing device that is a request source;
an execution determination step of determining, when the proxy execution request is received by the receiving step, whether or not part or all of the processing of the information processing device that is the request source can be executed by proxy;
a proxy execution step of executing a process of the information processing device that is the request source when the execution determination step determines that proxy execution is possible;
a distribution determination step of determining whether or not processing target information to be processed by proxy can be distributed to a plurality of information processing apparatuses;
a distribution step of distributing the processing target information to an information processing apparatus that performs proxy execution when the distribution determination step determines that the information can be distributed;
A control method with

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