Hewlett-packard Development Company, L.p.

Seagate Technology Incorporated

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Ludmila Cherkasova

Mehmet Kivanc Ozonat

Julie Anna Symons

Erik Riedel

Alma Riska

Evgenia Smirni

One embodiment collects performance data for an application server that processes transactions received from a client computer to a database server. An application log is created from the performance data and used for capacity planning in a multi-tiered architecture.

Capacity planning of multi-tiered applications from application logs

One embodiment is a method that determines application performance signatures occurring at an application server in a multi-tier architecture. The method then analyzes the application performance signatures to determine whether a change in transaction performance at the application server results from a modification to an application.

Using application performance signatures for characterizing application updates

A data storage device includes a cumulative data histogram of lengths of idle times between foreground user service requests. The cumulative data histogram is updated with measured lengths of current idle times between successive user service requests. Background service request are scheduled following a user service request after a time delay that is controlled as a function of the cumulative data histogram and a calculated length of a busy time of the background service request.

Data storage device with histogram of idle time and scheduling of background and foreground jobs

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Williamsburg, VA, United States of America

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