JP2011205204A - Method, device and program for resources distribution - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform resources distribution according to performance of a network.SOLUTION: When resources are distributed to a plurality of distribution target devices following a resources distribution place list, a network topology diagram creation unit 13 obtains a network composition and a passing-through time for each distribution target device based on route information acquired by a route information acquisition unit 12, a distribution order decision and processing unit 14 calculates a response total time for each distribution target device from the passing-through time, simultaneously rearranges the response total time to decide the distribution order, and a distribution processing unit 15 executes the distribution following the decided order. Even when this distribution processing is being executed, the device supervises a network condition, and changes the distribution order. The distribution of the resources can be efficiently performed by dynamically changing the order of the resources distribution according to the network condition.

Description

  The present invention relates to a resource distribution method, a resource distribution apparatus, and a resource distribution program, and in particular, a resource distribution method, a resource distribution apparatus, and a resource distribution apparatus that efficiently distribute resources from a server to a plurality of clients under the control in consideration of a load state of a relay network. It relates to the resource distribution program.

  In a resource distribution system installed in a client / server system, a resource is distributed from a resource distribution server toward a distribution target client under the resource distribution server. The distributed resource may be a basic data file that is commonly used in the work of each client to be distributed, or a patch file that partially corrects a defect in the application program of each client.

  When distributing resources, the resource distribution server distributes resources in the order of registration in the distribution destination list in which the clients to be distributed are registered. At this time, if the operator of the resource distribution server knows that the load on the network for a specific client is empirically heavy (the line usage rate is high) at a specific condition at the time of resource distribution, The order of resource distribution in the distribution destination list may be changed manually. For example, if it always takes time to distribute resources to a client at a branch office only during a specific week, a specific day, a specific time, etc. The order is changed to a time zone with a small network load. In addition, the resource distribution server can set the number of units (multiplicity) that can simultaneously send resources to a plurality of clients. By increasing the multiplicity, the resource distribution time can be reduced. It can be shortened.

  Also, if the number of clients to which resources are to be distributed by one resource distribution server is very large, for example, an intermediate server is installed for each subnet group, and the intermediate server acts as a proxy for distributing resources to each client. This is also known (see, for example, Patent Document 1). As a result, the resource distribution server only needs to distribute resources to a smaller number of intermediate servers than the clients, and each intermediate server distributes resources to subordinate clients. Will be distributed.

JP 2002-124945 A

  However, since the network load is constantly changing, if the resources delivered by the resource delivery server reach the client via the network, the performance of the network may deteriorate, which is the bottleneck. Therefore, there was a problem that resources could not be distributed efficiently.

  The present invention has been made in view of the above points, and even when resources are distributed, the entire distribution process can be efficiently performed even if the performance of the network may be temporarily reduced. An object is to provide a resource distribution method, a resource distribution apparatus, and a resource distribution program.

  In the present invention, in order to solve the above-described problem, in a resource distribution method for distributing resources from a resource distribution server to a plurality of distribution target devices, a path information acquisition command is executed to execute a route information acquisition command between the resource distribution server and the distribution target device. Network topology and communication check, create a network topology diagram and corresponding communication time table from the execution result of the route information acquisition command, and distribute from the communication time information held in the communication time table The order is determined, and the resources are sequentially distributed according to the distribution order. During the resource distribution process, execution of the route information acquisition command, update of the communication time table, and update of the distribution order are performed. And in the subsequent distribution processing of the resource, the distribution processing is performed according to the updated distribution order. Resource distribution method is provided.

  Further, in the present invention, in a resource distribution device that distributes resources to a plurality of distribution target devices, the state of the network up to the distribution target device registered in the resource distribution destination list is investigated and stored in a route information database Based on the route information stored in the route information database, a network topology diagram representing gateway connections and a communication time table recording response times from the gateway and the distribution target device are created. A distribution order table in which the response time is recorded for each of the distribution target devices from the communication time table and the communication time table, and a response total time is calculated by adding the response times for each of the distribution target devices. A distribution order determination processing unit that rearranges the response total time in ascending order and determines a distribution order; While distributing the resources in order according to the distribution order, the distribution order is updated by executing the route information acquisition unit, the network topology diagram creation unit, and the distribution order determination processing unit for the undistributed distribution target devices. A distribution processing unit that performs distribution processing of the resource from the next time onward according to the updated distribution order, the resource distribution destination list, the route information database, the network topology diagram, the communication time table, and the distribution order table. And a storage unit that holds the resource distribution device.

  Furthermore, in the present invention, in a resource distribution program for distributing resources to a plurality of distribution target devices, the computer checks the status of the network leading to the distribution target device registered in the resource distribution destination list, and provides route information. Based on the route information acquisition function stored in the database and the route information stored in the route information database, the network topology diagram representing the connection of the gateway, and the communication time table recording the response time from the gateway and the distribution target device And a network topology diagram creation function for creating a distribution order table in which the response time is recorded for each of the distribution target devices from the communication time table, and the response total time for which the response times are totaled for each of the distribution target devices Calculate the distribution order by rearranging the total response time in ascending order A distribution order determination processing function, and a distribution information acquisition function, a network topology diagram creation function, and a distribution order determination processing function for an undistributed distribution target device while distributing the resources in order according to the distribution order. Is executed, the distribution order is updated, and a resource distribution program for realizing the distribution processing function of performing the resource distribution processing from the next time on according to the updated distribution order is provided.

  According to such a resource distribution method, resource distribution apparatus, and resource distribution program, before distributing resources, the network state is investigated, the distribution target devices are rearranged in the order of short communication time, and the resources are distributed according to the distribution order. However, even during this distribution, the network status is monitored, and if the network status changes, the distribution order is dynamically changed accordingly. As a result, the entire distribution process can be performed efficiently.

  In the resource distribution method, resource distribution device, and resource distribution program with the above configuration, the distribution order is dynamically changed after investigating the network status in advance, so manual distribution considering the network throughput Since there is no need to change the order and the distribution process is not biased to a specific network, there is an advantage that the entire distribution process can be performed with maximum efficiency.

  In addition, since the state of the network is investigated immediately before and during the distribution, it is possible to appropriately cope with a case where the network configuration is changed or the network load is rapidly changed.

It is a figure which shows the structural example of the resource delivery system to which this invention is applied. It is a functional block diagram of the resource distribution apparatus which a resource distribution server has. It is a figure which shows one structural example of the hardware of the computer used for this Embodiment. It is a flowchart which shows the flow of the resource delivery process in a resource delivery apparatus. It is a flowchart which shows the flow of a route information acquisition process. It is a figure which shows the example of a resource delivery destination list. It is a figure which shows the example of execution of a route information acquisition command, and its result. It is a figure which shows the example of creation of a route information database. It is a flowchart which shows the flow of network topology figure creation processing. It is a figure explaining the example of creation of a network topology diagram. It is a figure which shows the example of a communication time table. It is a flowchart which shows the flow of a distribution order determination process. It is a figure which shows the example of a distribution order table. It is a flowchart which shows the flow of a delivery process.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a configuration example of a resource distribution system to which the present invention is applied.
The resource distribution system includes a resource distribution server 1, a plurality of distribution target devices that are clients thereof, and a plurality of gateways provided on a network that connects them. Here, in order to simplify the description, there are five distribution target devices A, B, C, D, and E as distribution target devices, and five gateways # 1, # 2, # 3, # as gateways. 4 and # 5.

  Therefore, for example, when distributing a computer resource such as a program or data to the distribution target apparatus A, the resource is sequentially sent from the resource distribution server 1 via the gateways # 1, # 2, and # 3.

  The resource distribution server 1 sequentially distributes resources one by one to a plurality of distribution target devices A, B, C, D, and E, but may distribute a predetermined number at the same time. When performing resource distribution, if a part of the relay network to the distribution destination is in a high load state with high line usage, it becomes a bottleneck, and it takes time until the resource reaches the distribution destination. Will take. In addition, when the network that is the bottleneck is a shared path for a plurality of distribution destinations, resource distribution cannot be performed efficiently to the plurality of distribution destinations.

  Therefore, the resource distribution server 1 determines the order of sending the resources while grasping the load state of the network, and distributes the resources according to the order. The order is basically determined so that priority is given to a distribution target device to which resources are sent through a route with a small network load.

FIG. 2 is a functional block diagram of a resource distribution apparatus included in the resource distribution server.
The resource distribution device 11 includes a route information acquisition unit 12, a network topology diagram creation unit 13, a distribution order determination processing unit 14, a distribution processing unit 15, and a storage unit 16. The storage unit 16 includes a resource distribution destination list 17 in which distribution target devices A, B, C, D, and E are registered, a path information database 18, a network topology diagram 19, a communication time table 20, and a distribution order table. 21 and a distribution file 22 are stored.

  The route information acquisition unit 12 is connected to the network 2, and based on the resource distribution destination list 17, the network status from the resource distribution device 11 to each of the distribution target devices A, B, C, D, and E is shown. The result is investigated, and the result is stored in the route information database 18.

  The network topology diagram creation unit 13 creates a network topology diagram 19 and a communication time table 20 corresponding thereto based on the route information stored in the route information database 18. According to the network topology diagram 19 and the communication time table 20, it is possible to confirm the network connection form and communication from the resource distribution device 11 to each of the distribution target devices A, B, C, D, and E.

  The distribution order determination processing unit 14 creates a distribution order table 21 that calculates and registers the response total time of gateways on the route from the communication time table 20, and rearranges the distribution destinations in ascending order of the response total time. To determine the distribution order.

  The distribution processing unit 15 distributes the distribution file 22 to the distribution target devices A, B, C, D, and E, and the distribution is executed in order according to the distribution order determined by the distribution order table 21. The distribution processing unit 15 also instructs the route information acquisition unit 12 to re-acquire route information for a device that has not distributed the distribution file 22 when the distribution processing is being executed. Thereby, it is possible to always grasp the network state. The distribution processing unit 15 also instructs the network topology diagram creation unit 13 and the distribution order determination processing unit 14 to dynamically change the distribution order according to the network state grasped by the route information acquisition unit 12. become.

The resource distribution device 11 included in the resource distribution server 1 can be implemented by a computer.
FIG. 3 is a diagram illustrating a configuration example of computer hardware used in the present embodiment.

  The entire computer 30 is controlled by a CPU (Central Processing Unit) 31. A random access memory (RAM) 32 and a plurality of peripheral devices are connected to the CPU 31 via a bus 38.

  The RAM 32 is used as a main storage device of the computer 30. The RAM 32 temporarily stores at least part of an OS (Operating System) program and application programs to be executed by the CPU 31. The RAM 32 stores various data necessary for processing by the CPU 31.

  Peripheral devices connected to the bus 38 include a hard disk drive (HDD) 33, a graphic processing device 34, an input interface 35, an optical drive device 36, and a communication interface 37.

  The HDD 33 magnetically writes and reads data to and from the built-in disk. The HDD 33 is used as a secondary storage device of the computer 30. The HDD 33 stores an OS program, application programs, and various data. Note that a semiconductor storage device such as a flash memory can also be used as the secondary storage device.

  A monitor 39 is connected to the graphic processing device 34. The graphic processing device 34 displays an image on the screen of the monitor 39 in accordance with a command from the CPU 31. Examples of the monitor 39 include a liquid crystal display device.

  A keyboard 40 and a mouse 41 are connected to the input interface 35. The input interface 35 transmits signals sent from the keyboard 40 and mouse 41 to the CPU 31.

  The optical drive device 36 reads data recorded on the optical disk 42 using laser light or the like. The optical disk 42 is a portable recording medium on which data is recorded so that it can be read by reflection of light. The optical disk 42 includes a DVD (Digital Versatile Disc), a DVD-RAM, a CD-ROM (Compact Disc Read Only Memory), a CD-R (Recordable) / RW (ReWritable), and the like. The application program related to resource distribution recorded on the optical disc 42 is read by the optical drive device 36 and recorded in the HDD 33.

  The communication interface 37 is connected to the network 2. The communication interface 37 performs resource distribution and data exchange with a distribution target apparatus, which is another computer, via the network 2.

  With the hardware configuration as described above, the processing functions of the present embodiment can be realized. 3 shows the hardware configuration of the computer 30 as the resource distribution apparatus 11 of the resource distribution server 1, other computers may have the same hardware configuration.

Next, the processing function of the resource distribution apparatus 11 will be described in detail.
FIG. 4 is a flowchart showing a flow of resource distribution processing in the resource distribution apparatus.
In the distribution process, first, a path information acquisition command is executed in order to confirm the network connection form and communication between the resource distribution apparatus 11 and the distribution destination apparatus (step S1), and the network topology is determined from the execution result. A diagram (and a corresponding communication time table) is created (step S2), and the distribution order is determined (step S3). The above is pre-processing before distributing resources, and the latest network immediately before starting distribution is investigated, and the distribution order of resources is determined according to the state of the network.

  Then, a resource distribution process from the resource distribution apparatus 11 toward the distribution destination is executed (step S4). In this distribution process, while the distribution process is in progress, the network is investigated for the undelivered destination, the network topology diagram (communication time table) is updated and the distribution order is updated based on the result of the investigation. The distribution order is dynamically changed according to the network status.

  5 is a flowchart showing the flow of the route information acquisition process, FIG. 6 is a diagram showing an example of the resource distribution destination list, FIG. 7 is a diagram showing an example of execution of the route information acquisition command and the result, and FIG. 8 is a route information database. FIG.

  In the route information acquisition process, first, the route information acquisition unit 12 opens the resource distribution destination list 17 (step S10). In this resource distribution destination list 17, for example, as shown in FIG. 6, a host name that means the names of the distribution target devices A, B, C, D, and E and the IP (Internet Protocol) address of the host are registered. Has been.

  Next, the path information acquisition unit 12 reads the data of the resource distribution destination list 17 for one line (step S11), and determines whether the read line is the last line (EOF: End Of File) (step S12). If it is not the last line, a route information acquisition command is executed to the IP address registered in the read line (step S13).

  The route information acquisition command is a command for acquiring route information between two hosts on the Internet. For example, a trace command of Windows (registered trademark in the United States and other countries of Microsoft Corporation in the United States) and a traceroute of UNIX (trademark). The command is known. FIG. 7 shows an example of response time obtained when the tracert command is executed. According to FIG. 7, for example, in the network configuration shown in FIG. 1, the trace command is executed with the IP address of the distribution target device A (host name: CL101) as an argument. As for the first data, the IP address of the first gateway # 1 as viewed from the resource distribution server 1 is “10.1755.63.1”, and the response time from there is measured 10 times for all 10 Indicates that it is less than milliseconds. Similarly, the second, third, and fourth data indicate response times and their IP addresses when measured three times for gateway # 2, gateway # 3, and distribution target device A, respectively. .

  Next, the route information acquisition unit 12 stores the execution result of the route information acquisition command in the route information database 18 (step S14). As shown in FIG. 8, the path information database has fields for the target host name, gateway address, and response time of the distribution target device. For each distribution target host, all the relayed gateways and hosts are relayed. The IP address and response time are stored.

  Next, after saving in the route information database 18, the route information acquisition unit 12 does not receive a response from one of the relayed gateways or the host in the execution result of the route information acquisition command, and finally the route information acquisition command is sent to the host. If not received, the information about the host is deleted from the route information database 18 (step S15). Thereafter, the process returns to step S11 and proceeds to reading the next distribution destination in the resource distribution destination list 17.

If it is determined in step S12 that the last line of the file has been read, the resource distribution destination list 17 is closed (step S16), and the path information acquisition process is terminated.
FIG. 9 is a flowchart showing a flow of network topology diagram creation processing, FIG. 10 is a diagram for explaining an example of creation of a network topology diagram, and FIG. 11 is a diagram showing an example of a communication time table.

  The network topology diagram creation unit 13 first opens the route information database 18 (step S20), and determines whether the target host is terminated (step S21). If there is information on the target host in the route information database 18, the address of the gateway that relays to the target host is sequentially read (step S22), and this is continued until the address of the target host on the last row is read (step S23).

  Next, the network topology diagram creating unit 13 sequentially creates a network topology diagram for each read gateway address (step S24). As shown in FIG. 10, the network topology diagram is created by arranging gateways in series in the order of the read gateway addresses. According to FIG. 10, for the target host whose IP address is “10.1.0.1”, gateways # 1, # 2, and # 3 are sequentially connected from the resource distribution server 1 to the target host. Created.

  Next, the network topology diagram creating unit 13 reflects the created topology diagram in the topology diagram of the entire configuration (step S25). This is because the gateways having the same IP address are overlapped with each other, and when the IP addresses are different, the topology diagram of the entire configuration is created by branching from the overlapping gateways. The created topology diagram of the entire configuration is used when displaying the network connection form on the monitor 39.

  Next, the network topology diagram creating unit 13 creates the communication time table 20 from the topology diagram (step S26). As shown in FIG. 11, the communication time table 20 records response times taken between the resource distribution server and each gateway, between each gateway and each gateway, and between each gateway and each target host. Has been. The creation of the communication time table 20 employs an arbitrary one of the three measurement results, for example, the first measurement result.

  When the topology diagram and the communication time table 20 relating to the specific target host are created in this way, the process returns to step S21. If there is information on the unprocessed target host in the route information database 18, the above processing is executed. When there is no processing target host, the route information database 18 is closed (step S27), and this processing is terminated.

FIG. 12 is a flowchart showing the flow of the distribution order determination process, and FIG. 13 is a diagram showing an example of the distribution order table.
The distribution order determination processing unit 14 first opens the communication time table 20 (step S30), and reads data for one column relating to the route from the resource distribution server 1 to the target host (step S31). Next, it is determined whether or not the target host is terminated without being able to read the data for one column (step S32). If not, the total response time of the read column is calculated (step S33).

  Next, the distribution order determination processing unit 14 determines whether or not the total response time is longer than in the normal case (step S34). In this embodiment, the average communication time when the network load is small such as outside business hours is measured and stored in advance, and it is determined whether or not the difference from the average communication time is less than 50 milliseconds, for example. If the difference between the response total time and the average communication time is not less than 50 milliseconds, the following process is skipped and the process returns to step S31 to proceed to reading the data of the next target host.

  If the difference between the total response time and the average communication time is less than 50 milliseconds, the distribution order determination processing unit 14 reflects the total response time on the distribution order table 21 (step S35) and sorts the response total time in ascending order. Is performed (step S36). Here, as shown in FIG. 13, the distribution order table 21 includes fields for a target host name, a response total time, a distribution order, a distribution start flag, and a distribution completion flag. First, the response calculated in step S33. If the total time is not much longer than usual, it will be reflected in the corresponding target host name column. In step S36, the order is rearranged only for the reflected response total time, whereby the distribution order is determined in a state where the target hosts of the route with the long response total time are excluded.

  When the distribution order is determined, the process returns to step S31 and the next data is read. If it is determined in step S32 that the target host is terminated, the communication time table 20 is closed (step S37), and the distribution order determination process is terminated.

FIG. 14 is a flowchart showing the flow of the distribution process.
The distribution processing unit 15 first opens the distribution order table 21 (step S40), and executes the distribution process of the distribution file 22 in order from the target host whose distribution order is 1 (step S41). Here, the distribution processing unit 15 sets the distribution start flag of the distribution order table 21 to distribution start when the distribution processing is started, and sets the distribution completion flag to distribution completion after the distribution processing is completed.

  Next, the distribution processing unit 15 determines whether or not the distribution process has been completed every predetermined time from the start of the first distribution process (step S42). If the distribution has not been completed yet, Re-examine the network status for the target host and review the distribution order.

  In other words, the distribution processing unit 15 executes the route information acquisition command for all the undistributed hosts except during distribution and completion of distribution, and updates the route information database 18 (step S43). This process is executed in the same procedure as the flowchart shown in FIG. 5 using the function of the route information acquisition unit 12, but the undistributed target host to be processed is not acquired from the resource distribution destination list 17. The distribution order table 21 is referred to, and target hosts whose distribution start flag is not set to distribution start and whose distribution completion flag is not set to distribution completion are extracted from here.

  Next, the distribution processing unit 15 updates the communication time table 20 using the function of the network topology diagram creation unit 13 (step S44), and uses the function of the distribution order determination processing unit 14 to total the responses of the distribution order table 21. The time and distribution order fields are updated (step S45). At this time, the distribution order is determined by sorting the response total time in which the distribution start flag is not set to distribution start and the distribution completion flag is not set to distribution completion in ascending order.

If it is determined in step S42 that the distribution process has been completed, the distribution order table 21 is closed (step S46), and the distribution process is terminated.
Note that the processing functions that the resource distribution apparatus 11 should have are provided in the form of a program describing the processing contents. By executing the program on a computer, the above processing functions are realized on the computer. The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of the computer-readable recording medium include a magnetic storage device, an optical disk, a magneto-optical recording medium, and a semiconductor memory. It is also possible to store the program in a storage device of the server computer and transfer the program from the server computer to the computer of the resource distribution server 1 via the network. Furthermore, at least a part of the above processing functions can be realized by an electronic circuit such as a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), or a PLD (Programmable Logic Device).

DESCRIPTION OF SYMBOLS 1 Resource distribution server 2 Network 11 Resource distribution apparatus 12 Path information acquisition part 13 Network topology diagram creation part 14 Distribution order determination process part 15 Distribution process part 16 Storage part 17 Resource distribution destination list 18 Path information database 19 Network topology figure 20 Communication time Table 21 Distribution order table 22 Distribution file 30 Computer 31 CPU
32 RAM
33 HDD
34 Graphic processing device 35 Input interface 36 Optical drive device 37 Communication interface 38 Bus 39 Monitor 40 Keyboard 41 Mouse 42 Optical disc # 1, # 2, # 3, # 4, # 5 Gateway A, B, C, D, E Distribution target apparatus

Claims (9)

In a resource distribution method for distributing resources from a resource distribution server to a plurality of distribution target devices,
Execute a route information acquisition command to perform a network connection mode and communication check between the resource distribution server and the distribution target device,
Create a network topology diagram and corresponding communication time table from the execution result of the route information acquisition command,
Determine the distribution order from the communication time information held in the communication time table,
Sequentially distribute the resources according to the distribution order;
During the resource distribution process, the route information acquisition command is executed, the communication time table is updated, and the distribution order is updated. The distribution order updated in the subsequent distribution process of the resource A resource distribution method comprising performing distribution processing according to the above.   The execution of the route information acquisition command is performed by specifying the IP address of the distribution target device, and acquires the IP address of the gateway existing on the route and the response time from the gateway and the distribution target device, The resource distribution method according to claim 1, wherein the acquired IP address and response time of the gateway and the distribution target device are stored in a route information database for each of the distribution target devices.   3. The resource distribution method according to claim 2, wherein the route information database excludes the route information of the distribution target device that has not been reached by the executed route information acquisition command.   The communication time table is a table of the response times from each of the gateways and the distribution target devices existing from the resource distribution server to each of the distribution target devices based on the route information database. The resource distribution method according to claim 2, wherein the resource distribution method is one.   The distribution order is determined by creating a distribution order table in which the response total time obtained by summing up the response times for each of the distribution target devices is created from the distribution target device and the communication time table, and the total response time is ascending. 5. The resource distribution method according to claim 4, wherein the resource distribution method is performed by rearranging the resources.   6. The distribution order table according to claim 5, wherein when the total response time is longer than a normal average communication time exceeding a predetermined time, information on the distribution target device is excluded. Resource distribution method.   The execution of the path information acquisition command during the resource distribution process is performed on the distribution target device of the non-distribution process managed by the distribution order table. Resource distribution method. In a resource delivery device that delivers resources to multiple delivery target devices,
A route information acquisition unit that investigates the state of the network up to the distribution target device registered in the resource distribution destination list and stores it in the route information database;
A network topology diagram creation unit that creates a network topology diagram representing gateway connections based on route information stored in the route information database and a communication time table in which response times from the gateway and the distribution target device are recorded; ,
Create a distribution order table in which the response time is recorded for each of the distribution target devices from the communication time table, calculate a total response time of the response times for each of the distribution target devices, and increase the total response time in ascending order A distribution order determination processing unit for rearranging and determining a distribution order;
While distributing the resources in order according to the distribution order, the distribution order is determined by executing the route information acquisition unit, the network topology diagram creation unit, and the distribution order determination processing unit with respect to the undistributed target device. A distribution processing unit that updates and distributes the resource from the next time according to the updated distribution order;
A storage unit that holds the resource distribution destination list, the route information database, the network topology diagram, the communication time table, and the distribution order table;
A resource distribution device comprising: In a resource distribution program that distributes resources to multiple distribution target devices,
On the computer,
A route information acquisition function for investigating the state of the network leading to the distribution target device registered in the resource distribution destination list and storing it in the route information database;
A network topology diagram creation function for creating a network topology diagram representing connection of gateways and a communication time table recording response times from the gateway and the delivery target device based on route information stored in the route information database; ,
Create a distribution order table in which the response time is recorded for each of the distribution target devices from the communication time table, calculate a total response time of the response times for each of the distribution target devices, and increase the total response time in ascending order A distribution order determination processing function for rearranging and determining the distribution order;
While distributing the resources sequentially according to the distribution order, the distribution order is determined by executing the route information acquisition function, the network topology diagram creation function, and the distribution order determination processing function for the undistributed distribution target devices. A distribution processing function that updates and distributes the resource from the next time according to the updated distribution order;
Resource distribution program to realize

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