Dynamic reconfiguration of CPU and WebSphere on IBM pSeries servers

  • Authors:
  • Joefon Jann;Niteesh Dubey;R. S. Burugula;Pratap Pattnaik

  • Affiliations:
  • IBM Thomas J. Watson Research Center, Yorktown Heights, New York;IBM Thomas J. Watson Research Center, Yorktown Heights, New York;IBM Thomas J. Watson Research Center, Yorktown Heights, New York;IBM Thomas J. Watson Research Center, Yorktown Heights, New York

  • Venue:
  • Software—Practice & Experience
  • Year:
  • 2004

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Abstract

This paper studies the effects that dynamic reconfiguration (DR) has on a WebSphere workload while CPUs are dynamically added to and removed from the underlying AIX instance. DR is a new technology available in AIX 5.2. This study shows that the resource allocations for a complex and function-rich middleware system such as WebSphere can be efficiently and dynamically managed by the DR technology, without WebSphere having to explicitly accommodate for the DR features of the operating system.