International Business Machines Corporation

Cuong Manh Pham

Harigovind Venkatraj Ramasamy

Long Wang

Ruchi Mahindru

Yu Deng

Mahesh Viswanathan

Soumitra Sarkar

Salman Abdul Baset

Chunqiang Tang

Byung Chul Tak

Manas Singh

Methods, systems, and computer program products for black box techniques for detecting performance and availability issues in virtual machines exploiting hardware assisted virtualization are provided herein. A computer-implemented method includes capturing multiple hardware assisted virtualization exit calls generated in connection with a given virtual machine; calculating one or more virtual machine performance metrics attributed to the given virtual machine based on the multiple hardware assisted virtualization exit calls; determining one or more virtual machine performance issues and/or one or more virtual machine availability issues attributed to the given virtual machine based on the one or more calculated virtual machine performance metrics; and outputting an alert identifying the one or more determined virtual machine performance issues and/or the one or more virtual machine availability issues attributed to the given virtual machine.

Black box techniques for detecting performance and availability issues in virtual machines

Methods, systems, and articles of manufacture for injecting faults at select execution points of distributed applications are provided herein. A method includes monitoring a run-time state of each of multiple components of a distributed application to determine one or more sequence of events that triggers a fault injection point at one of the multiple components; defining a fault injection scenario in a specification based on said monitoring, wherein said fault injection scenario comprises a description of one or more sequence of events during which an intended fault is to be injected to a target component of the multiple components at one selected event; and executing the fault injection defined in the specification to perform injection of the intended fault during run-time of the distributed application.

Injecting faults at select execution points of distributed applications

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Cuong Manh Pham