Java Performance on POWER7

Best Practice

Out of the box AIX is a robust, solid and scalable operating system. However, some changes to the default settings may be necessary in order for customers to realize the best possible performance for their applications based on the applications’ specific characteristics and needs.

This document describes performance considerations, tuning options, existing tools, and diagnostic options that can be used to guide tuning decisions to maximize performance for a given application or workload.

The following performance considerations will be discussed: 32-bit versus 64-bit Java, memory and various page sizes, application scaling, affinity, consolidation, and Java Garbage Collection tuning.

Data has been collected to illustrate the benefits of the following scenarios: 32-bit and 64-bit Java, various page sizes, affinity, and scaling along with existing tools that can be used to guide tuning decisions.

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Next generation applications for big data and analytics and cognitive computing are providing unprecedented insights into opportunities, threats and efficiencies. IBM Power Systems is at the forefront of delivering solutions to gain faster insights from analyzing both structured information and unstructured big data. With the secure, flexible and open platform of IBM Power Systems plus solutions and software, organizations can outpace their competitors by delivering faster services, providing differentiated offerings and turning operational cost into investment opportunity.

To draw insights and make better decisions, businesses rely on the secure, flexible and open platform of IBM Power Systems. Built with the first processor designed for big data workloads, the design of Power Systems combines the computing power, memory bandwidth and I/O in ways that are easier to consume and manage, building on strong resiliency, availability and security.

IBM Power Systems deliver flexibility and choice of operating systems to enable your business to support the next generation applications for big data and analytics and cognitive computing that are transforming how organizations work today. Whether running 1, 2, or all 3 - coupled with PowerVM, they maximize the benefit of Power Systems in your business.

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As an open innovation platform, Power Systems is optimized for big data and analytics performance and to deliver scale-out economics and security for the cloud. IBM and IBM Business Partner solutions exploit key capabilities in IBM Power Systems.

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