SYSTEMS, METHODS AND COMPUTER PROGRAMS FOR DETERMINING DEPENDENCIES BETWEEN LOGICAL COMPONENTS IN A DATA PROCESSING SYSTEM OR NETWORK

• US 20080189717A1
• Filed: 04/07/2008
• Published: 08/07/2008
• Est. Priority Date: 10/20/2003
• Status: Active Grant

• Current Assignee: Daedalus Blue LLC
• Original Assignee: International Business Machines Corporation
• Inventors: Gupta, Manish, Neogi, Anindya, Agarwal, Manoj K., Kar, Gautam, Kermani, Parviz
• Granted Patent: US 8,006,230 B2
• Time in Patent Office: Days
• US Class Current: 718/106
• CPC Class Codes: G06F 11/008 Reliability or availability analysis
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]

Abstract

Described are methods, apparatus and computer programs for determining run-time dependencies between logical components of a data processing environment. Components of the data processing environment are monitored by monitoring agents accessing run-time activity data via APIs of the managed system. A dependency generator identifies correlations between the run-time activity of the monitored components. For synchronous monitored systems, the dependency generator calculates an activity period for monitored components and determines which component'"'"'s activity periods contain the activity periods of other components. Containment is used as an indicator of a likely dependency relationship, and a weighting is computed for each dependnecy relationship based on the consistency of containment.

Claims

1. A data processing apparatus comprising:

a data processing unit;

a data storage unit;

a correlation identifier

for receiving, from at least one monitoring agent, monitored run-time activity data of each of a first logical component and a second logical component of a data processing environment, said receiving comprising receiving a first activity period for said first logical component and a second activity period for said second logical component, wherein said receiving comprises receiving a first start time and a first end time for said first logical component and a second start time and a second end time for said second logical component, and

for comparing the monitored run-time activity data of the first logical component with the monitored run-time activity data of the second logical component to identify positive correlations between the monitored run-time activity of the first and second logical components, said comparing comprising comparing said first activity period and said second activity period to identify correlations between said first logical component and said second logical component, wherein said comparing comprises determining whether said first start time is before said second start time and whether said first end time is after said second end time; and

a dependency generator for responding to identification of a positive correlation between the monitored run-time activity of the first and second logical components by recording in the data storage unit the existence of a dependency relationship between the first and second logical components,

wherein monitoring the run-time activity of said first logical component and said second logical component performed by said at least one monitoring agent comprises generating events by the at least one monitoring agent in response to completion of the processing of poll requests by each of said first logical component and said second logical component, and wherein the step of comparing the monitored run-time activity comprises;

calculating an activity period for each of said first logical component and said second logical component in response to the generated events indicating the completion of processing of the poll requests by the respective one of said first logical component and said second logical component; and

determining whether the activity period of said first logical component contains the activity period of the second component.

2. The data processing apparatus according to claim 1, wherein the dependency generator is configured to generate a CIM_dependency class instance to represent an identified positive correlation, the apparatus further comprising a CIM object manager configured to record dependency information within a CIM repository in the data storage unit.

3. A distributed data processing system comprising:

a first data processing apparatus comprising a set of logical components to be monitored, and at least one monitoring agent for monitoring run-time activity data for the set of logical components and for sending the monitored run-time activity data to a correlation identifier on a second data processing apparatus, said monitoring comprising determining activity periods for said logical components; and

a second data processing apparatus comprising;

a data processing unit;

a data storage unit;

a correlation identifier

for receiving, from the at least one monitoring agent, monitored run-time activity data of each of a first logical component and a second logical component of a data processing environment, said receiving comprising receiving a first activity period for said first logical component and a second activity period for said second logical component, wherein said receiving comprises receiving a first start time and a first end time for said first logical component and a second start time and a second end time for said second logical component, and

for comparing the monitored run-time activity data of the first logical component with the monitored run-time activity data of the second logical component to identify positive correlations between the monitored run-time activity of the first and second logical components, said comparing comprising comparing said first activity period and said second activity period to identify correlations between said first logical component and said second logical component, wherein said comparing comprises determining whether said first start time is before said second start time and whether said first end time is after said second end time; and

a dependency generator for responding to identification of a positive correlation between the monitored run-time activity of the first and second logical components by recording in the data storage unit the existence of a dependency relationship between the first and second logical components,

wherein monitoring the run-time activity of said first logical component and said second logical component performed by said monitoring agent comprises generating events in response to completion of the processing of requests by each of said first logical component and said second logical components, and wherein the step of comparing the monitored run-time activity comprises;

calculating an activity period for each of said first logical component and said second logical components in response to generated events indicating the completion of processing of a request by the respective one of said first logical component and said second logical components; and

determining whether the activity period of said first logical component contains the activity period of the second component.

4. The distributed data processing system of claim 3, further comprising at least one management application program for analyzing recorded dependency relationships.

5. The distributed data processing system according to claim 3, wherein the at least one management application program comprises a fault management application program.