COMPUTER SYSTEM, METHOD, AND PROGRAM

• US 20130103829A1
• Filed: 04/21/2011
• Published: 04/25/2013
• Est. Priority Date: 05/14/2010
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Komatsu, Hideaki, Murase, Masana, Yoshizawa, Takeo, Doi, Munehiro, Maeda, Kumiko
• Granted Patent: US 9,794,138 B2
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: G06F 9/485 Task life-cycle, e.g. stopping, restarting, resuming execution G06F9/4881 takes precedence
• CPC Class Codes: H04L 43/04 Processing captured monitoring data, e.g. for logfile generation

Abstract

Traffic data while the system is in operation is collected for a certain time as a preprocess. Typical patterns are extracted from the collected traffic data. Next, stream programs are created for the individual typical patterns and stored for the future reference. Next, the IDs of alternative tasks for transition among different stream programs are stored. In actual system operation, the system measures traffic data regularly or at any time, compares the resultant patterns with the typical patterns, and selects a stream program corresponding to the closest typical pattern as the next phase. Program shutdown time when shifting from the stream program in the present phase to the next phase can be reduced by gradually shifting empty tasks in the present phase to the next stream program as alternative tasks in consideration of the cost of switching between tasks, the cost of transferring data among resources, and so on.

Claims

1. A computer system control method for dynamically changing a configuration of the system by computer processing so as to be suitable for content of network traffic information, the method comprising the steps of:

storing, in advance, information that indicates tasks and assignment of resources with which the tasks are executed in a stream format so as to be adapted for phases corresponding to a plurality of different contents of the network traffic information;

measuring the network traffic information;

selecting stream-format resource assignment information that is relatively close to measured network traffic information as a next phase; and

switching from the stream-format resource assignment in a selected present phase to stream-format resource assignment in the next phase, in which the resources that have been processed in the stream-format resource assignment in the present phase act as transient alternative tasks in stream-format resource assignment in the next phase.

2. The method according to claim 1, further comprising the step of calculating alternative tasks in phase shift for the individual available resources and storing the alternative tasks as a table, wherein, in the switching step, the alternative tasks stored in correspondence with the resources are found from the present phase and the next phase and are executed alternatively.

3. The method according to claim 2, wherein the alternative tasks in phase shift are selected to reduce a related-task switching cost, a cost including an idle time until the alternative-task execution is started, a cost including the time for data transmission and reception between the resources in the related phases.

4-9. -9. (canceled)