Reducing overpolling of data in a data processing system

• US 8,205,121 B2
• Filed: 03/21/2007
• Issued: 06/19/2012
• Est. Priority Date: 03/21/2007
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Pomerantz, Ori
• Primary Examiner(s): Baderman, Scott
• Assistant Examiner(s): KO, CHAE M
• Application Number:
  US11/689,234
• Publication Number:
  US 20080235532A1
• Time in Patent Office: 1,917 Days
• Field of Search: 714/47.1, 709/232, 709/235, 718/105
• US Class Current: 714/47.1
• CPC Class Codes: G06F 11/3466 Performance evaluation by tracing or monitoring

Abstract

A computer implemented method, apparatus, and computer usable program code for reducing overpolled data in a data processing system is provided. A controller identifies a set of redundant measurements in a cycle. The controller then identifies a number of measurements repeated in the set of redundant measurements. The controller the computes a percentage of redundant polls based on the number of measurements repeated in the set of redundant measurements. The controller then computes a new polling period by reducing an original polling period by the percentage of redundant polls.

Claims

1. A computer implemented method for reducing overpolled data in a data processing system, the computer implemented method comprising:

identifying, by a controller, a set of redundant measurements in a cycle;

identifying a number of measurements repeated in the set of redundant measurements;

computing a percentage of redundant polls based on the number of measurements repeated in the set of redundant measurements; and

computing a new polling period by increasing an original polling period by the percentage of redundant polls.

2. The computer implemented method of claim 1, wherein the percentage of redundant polls is calculated by dividing the cycle by the difference in the cycle and the number of measurements repeated.

3. The computer implemented method of claim 1 further comprising:

responsive to identifying the number of measurements repeated in the set of redundant measurements, verifying that the number of measurements repeated are actually repeated in the cycle.

4. A data processing system comprising:

one or more processors;

a controller;

an agent polling device connected to the controller, wherein the agent polling device requests, by the one or more processors, measurements from a data source polling device at a first polling period, wherein the first polling period comprises a frequency with which the agent polling device requests data from the data source polling device; and

the data source polling device that requests updated measurements at a second polling period, wherein the second polling period comprises a frequency slower than the first polling period, and wherein the controller identifies a set of redundant measurements in a cycle resulting from the second polling period being slower than the first polling period, and wherein the controller identifies a number of measurements repeated in the set of redundant measurements, and wherein the controller computes a percentage of redundant polls based on the number of measurements repeated in the set of redundant measurements, and wherein the controller computes a new polling period by reducing an original polling period by the percentage of redundant polls.

5. The data processing system of claim 4, wherein the percentage of redundant polls is calculated by dividing the cycle by the difference in the cycle and the number of measurements repeated.

6. The data processing system of claim 4, wherein the controller verifies that the number of measurements repeated are actually repeated in the cycle in response to identifying the number of measurements repeated in the set of redundant measurements.

7. A computer program product for reducing overpolled data in a data processing system, the computer program product comprising a computer-readable, non-transitory storage device, tangibly embodying computer usable instructions thereon, the computer usable instructions including:

computer usable program code for identifying, by a controller, a set of redundant measurements in a cycle;

computer usable program code for identifying a number of measurements repeated in the set of redundant measurements;

computer usable program code for computing a percentage of redundant polls based on the number of measurements repeated in the set of redundant measurements; and

computer usable program code for computing a new polling period by reducing an original polling period by the percentage of redundant polls.

8. The computer program product of claim 7, wherein the percentage of redundant polls is calculated by dividing the cycle by the difference in the cycle and the number of measurements repeated.

9. The computer program product of claim 7 further comprising:

computer usable program code responsive to identifying the number of measurements repeated in the set of redundant measurements for verifying that the number of measurements repeated are actually repeated in the cycle.