Dependency management with atomic decay

• US 9,621,634 B2
• Filed: 06/07/2013
• Issued: 04/11/2017
• Est. Priority Date: 11/29/2007
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Inventors: Little, Mark Cameron
• Primary Examiner(s): Kraft, Shih-Wei
• Application Number:
  US13/913,107
• Publication Number:
  US 20130275487A1
• Time in Patent Office: 1,404 Days
• Field of Search: None
• CPC Class Codes: G06F 16/119 Details of migration of file systems migration mechanisms in storage systems G06F3/0647
• CPC Class Codes: G06F 16/214 Database migration support
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46

Abstract

A processor records statistics regarding invocation of a second component of a distributed computing system by a first component of the distributed computing system. The processor determines a dependency between the first component and the second component based on the statistics and determines a dependency rating for the dependency based on the statistics. The processor migrates the first component from a first location to a second different location. Responsive to determining that the dependency rating for the dependency exceeds a dependency threshold, the processor migrates the second component to the second location.

Claims

1. A computer implemented method, comprising:

recording, by a processor, statistics regarding invocation of a second component of a distributed computing system by a first component of the distributed computing system;

determining, by the processor, a dependency between the first component and the second component based on the statistics;

determining, by the processor, a dependency rating for the dependency based on the statistics, wherein the dependency rating identifies a degree of dependency between the first component of the distributed computing system and the second component of the distributed computing system;

migrating the first component from a first location to a second different location;

responsive to determining that the dependency rating for the dependency exceeds a dependency threshold, migrating the second component to the second location;

applying an atomic decay to the dependency rating, wherein the atomic decay reduces a value of the dependency rating over time according to a specified atomic decay factor; and

resetting the dependency rating each time the first component invokes the second component.

2. A computer readable storage medium including instructions that, when executed by a processor, cause the processor to perform operations comprising:

recording, by the processor, statistics regarding the invocation of a second component of a distributed computing system by a first component of the distributed computing system;

determining, by the processor, a dependency between the first component and the second component based on the statistics;

determining, by the processor, a dependency rating for the dependency based on the statistics, wherein the dependency rating identifies a degree of dependency between the first component of the distributed computing system and the second component of the distributed computing system;

determining that the first component has been migrated or will be migrated from a first location to a second location;

responsive to determining that the dependency rating for the dependency exceeds a dependency threshold, marking the second component for migration to the second location;

applying an atomic decay to the dependency rating, wherein the atomic decay reduces a value of the dependency rating over time according to a specified atomic decay factor; and

resetting the dependency rating each time the first component invokes the second component.