Performance Degradation Root Cause Prediction in a Distributed Computing System

Apparatus for identifying at least one resource in a distributed computing system which is a potential root cause of performance degradation of the system, the apparatus comprising:

• a memory;
• and at least one processor coupled to the memory and operative:
• (i) to compute operational bounds for the system and operational bounds for at least one resource in the system;
• (ii) to compare current end-to-end system performance with the operational bounds for the system;
• (iii) when the current end-to-end system performance is outside of the operational bounds for the system, to compare current performance of the at least one resource in the system with the operational bounds for the at least one resource;
• and (iv) to generate at least one output identifying the at least one resource in the system which is a potential root cause of performance degradation of the system.

An article of manufacture for identifying at least one resource in a distributed system which is a potential root cause of performance degradation of the system, comprising a machine readable medium containing one or more programs which when executed implement the steps of:

• computing operational bounds for the system and operational bounds for at least one resource in the system;
• comparing current end-to-end system performance with the operational bounds for the system;
• when the current end-to-end system performance is outside of the operational bounds for the system, comparing a current performance of the at least one resource in the system with the operational bounds for the at least one resource;
• and
• generating at least one output identifying the at least one resource in the system which is a potential root cause of performance degradation of the system.