INFORMATION PROCESSING METHOD, INFORMATION PROCESSING DEVICE, AND STORAGE MEDIUM

• US 20150120868A1
• Filed: 10/21/2014
• Published: 04/30/2015
• Est. Priority Date: 10/31/2013
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: FUJITA, Masaki, NAKAMOTO, Toyoaki
• Application Number:
  US14/519,247
• Publication Number:
  US 20150120868A1
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 67/1044 Group management mechanisms management of multicast group membership H04L12/185; reconfiguring of node membership in a computing system to eliminate errors G06F11/1425

Abstract

An information processing method performed by a computer coupled to a plurality of terminal devices, the information processing method includes setting a first number representing the number of terminal devices belonging to a first subnet capable of simultaneously performing download processing of certain content, and a second number representing the number of terminal devices belonging to a second subnet capable of simultaneously performing the download processing; receiving a download request from the first terminal device; downloading target content indicated in the download request to the first terminal device, when the number of terminal devices belonging to the first subnet that are performing download processing of the target content is less than the first number; measuring a time used for downloading of the target content to the first terminal device; and updating the first number and the second number, based on a comparison of the time and a predetermined time.

Claims

1. An information processing method performed by a computer coupled to a plurality of terminal devices belonging to a network divided into a plurality of subnets including at least a first subnet and a second subnet, the plurality of terminal devices including at least a first terminal device belonging to the first subnet and a second terminal device belonging to the second subnet, the information processing method comprising:

setting a first number in association with the first subnet and a second number in association with the second subnet, the first number representing the number of terminal devices capable of simultaneously performing download processing of certain content, among one or more terminal devices belonging to the first subnet, and the second number representing the number of terminal devices capable of simultaneously performing download processing of the certain content, among one or more terminal devices belonging to the second subnet;

receiving a download request from the first terminal device;

downloading target content indicated in the download request to the first terminal device, when the number of terminal devices belonging to the first subnet that are performing download processing of the target content is less than the first number;

measuring a time used for downloading related to the downloading of the target content to the first terminal device; and

updating the first number and the second number, based on a comparison of the time measured by the measuring and a predetermined time.

2. The information processing method according to claim 1, further comprising:

notifying the first terminal device that downloading to the first terminal device is not to be performed, when the number of terminal devices belonging to the first subnet that are performing download processing of the target content is equal to or greater than the first number.

3. The information processing method according to claim 1, wherein the updating includes:

decreasing the first number and updating the second number based on a number by which the first number is decreased, when the time measured by the measuring exceeds the predetermined time; and

increasing the first number and updating the second number based on a number by which the first number is increased, when the time measured by the measuring does not exceed the predetermined time.

4. The information processing device according to claim 3, wherein updating of the second number includes:

determining the second number by proportional distribution, based on a difference between before and after a change of the first number.

5. The information processing method according to claim 1, wherein the setting includes:

determining a band per terminal device by dividing a band of a subnet by the number of terminal devices belonging to the subnet, for each of the plurality of subnets;

determining a download time including a transmission delay time between the information processing device and a terminal device, for each of the plurality of subnets, based on the band per terminal device and a size of the certain content;

determining a threshold value indicating the number of the terminal devices capable of simultaneously performing download processing within the target period of time, for each of the plurality of subnets, by dividing a product of the number of terminal devices belonging to the subnet and a target period of time set in advance for the subnet by the download time; and

determining the first number and the second number by proportionally distributing a total of the threshold value calculated for each of the plurality of subnets to the plurality of subnets.

6. The information processing method according to claim 1, further comprising:

comparing a residual number representing the number of terminal devices that belong to the first subnet and that have not completed the download processing, and the updated first number, and

changing the updated first number to the residual number when the residual number is smaller than the updated first number.

7. The information processing method according to claim 6, further comprising:

updating the updated second number, based on a difference between before and after a change of the updated first number.

8. The information processing method according to claim 1, further comprising:

referring to version information of the target content included in the download request, and notifying the first terminal device that downloading to the first terminal device is not to be performed, when it is determined that the first terminal device has the target content of a latest version.

9. The information processing method according to claim 1,

wherein the computer is configured to execute the download processing based on a number of terminal devices capable of simultaneously performing the download processing, among the plurality of terminal devices belonging to the network.

10. The information processing method according to claim 1,

wherein the first subnet and the second subnet respectively coupled to the computer.

11. An information processing device coupled to a plurality of terminal devices belonging to a network divided into a plurality of subnets including at least a first subnet and a second subnet, the plurality of terminal devices including at least a first terminal device belonging to the first subnet and a second terminal device belonging to the second subnet, the information processing device comprising:

a memory, and

a processor coupled to the memory and configured to;

set a first number in association with the first subnet and a second number in association with the second subnet, the first number representing the number of terminal devices capable of simultaneously performing download processing of certain content, among one or more terminal devices belonging to the first subnet, and the second number representing the number of terminal devices capable of simultaneously performing download processing of the certain content, among one or more terminal devices belonging to the second subnet;

receive a download request from the first terminal device;

download target content indicated in the download request to the first terminal device, when the number of terminal devices belonging to the first subnet that are performing download processing of the target content is less than the first number;

measure a time used for downloading related to the downloading of the target content to the first terminal device; and

update the first number and the second number, based on a comparison of the time measured by the measuring and a predetermined time.

12. The information processing device according to claim 11, wherein the processor is further configured to:

notify the first terminal device that downloading to the first terminal device is not to be performed, when the number of terminal devices belonging to the first subnet that are performing download processing of the target content indicated in the download request is equal to or greater than the first number.

13. The information processing device according to claim 11, wherein the processor is configured to:

decrease the first number and updating the second number based on a number by which the first number is decreased, when the time used for downloading exceeds the predetermined time; and

increase the first number and updating the second number based on a number by which the first number is increased, when the time used for downloading does not exceed the predetermined time.

14. A non-transitory computer-readable storage medium storing a program causing a computer coupled to a plurality of terminal devices belonging to a network divided into a plurality of subnets including at least a first subnet and a second subnet to execute a process, the plurality of terminal devices including at least a first terminal device belonging to the first subnet and a second terminal device belonging to the second subnet, the process comprising:

setting a first number in association with the first subnet and a second number in association with the second subnet, the first number representing the number of terminal devices capable of simultaneously performing download processing of certain content, among one or more terminal devices belonging to the first subnet, and the second number representing the number of terminal devices capable of simultaneously performing download processing of the certain content, among one or more terminal devices belonging to the second subnet;

receiving a download request from the first terminal device;

downloading the target content to the first terminal device, based on the download request, when the number of terminal devices belonging to the first subnet that are performing download processing of target content indicated in the download request is less than the first number;

measuring a time used for downloading related to the downloading of the target content to the first terminal device; and

updating the first number and the second number, based on a comparison of the time used and a predetermined time.