Abstract
Critical business needs can be met with more assurance in an optimized, well-tuned environment. This IBM® Redbooks® Solution Guide describes some of the strategies for optimizing and tuning application code to run on IBM POWER8™ and earlier processor-based systems (IBM Power Systems™). These strategies are drawn from performance optimization efforts across many types of code running on IBM AIX®, IBM i, and Linux®. The guidance ranges from simple to complex and is usable across a broad set of IBM POWER® processor chips and systems. Some of the techniques can be performed without extensive experience. Techniques are also provided for advanced users who have a considerable understanding of application internals. In short, these strategies can maximize the return on your hardware investment.
This technical information was developed by IBM domain experts. It is directed at IBM presales organizations in support of Power Systems products, such as the IBM Power S822 server (Figure 1), and to those responsible for performing migration and implementation activities on IBM POWER8 -based (and earlier) servers.
Contents
Critical business needs can be met with more assurance in an optimized, well-tuned environment. This IBM® Redbooks® Solution Guide describes some of the strategies for optimizing and tuning application code to run on IBM POWER8™ and earlier processor-based systems (IBM Power Systems™). These strategies are drawn from performance optimization efforts across many types of code running on IBM AIX®, IBM i, and Linux®. The guidance ranges from simple to complex and is usable across a broad set of IBM POWER® processor chips and systems. Some of the techniques can be performed without extensive experience. Techniques are also provided for advanced users who have a considerable understanding of application internals. In short, these strategies can maximize the return on your hardware investment.
This technical information was developed by IBM domain experts. It is directed at IBM presales organizations in support of Power Systems products, such as the IBM Power S822 server (Figure 1), and to those responsible for performing migration and implementation activities on IBM POWER8 -based (and earlier) servers.
Figure 1. IBM Power S822 server
Did you know?
Trends in processor design are making it more important than ever to invest in improving application performance. The focus of processor design has shifted to delivering multiple cores per processor chip and to delivering more hardware threads in each core (known as simultaneous multi-threading (SMT) in IBM Power Architecture® terminology). Some of the best opportunities for improving application performance are in delivering scalable code by having an application effectively use multiple concurrent threads of execution. Another trend is support for larger page sizes. IBM Power Architecture supports multiple virtual memory page sizes, which provide performance benefits to an application because of hardware efficiencies that are associated with larger page sizes. POWER8, the newest IBM POWER® processor, supports transactional memory and other advanced features, which can improve application performance.
Business value
You can follow simple strategies and techniques to optimize your POWER8 environment and to analyze and maximize system performance. These strategies and techniques can be invaluable and offer the following advantages:
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Special Notices
The material included in this document is in DRAFT form and is provided 'as is' without warranty of any kind. IBM is not responsible for the accuracy or completeness of the material, and may update the document at any time. The final, published document may not include any, or all, of the material included herein. Client assumes all risks associated with Client's use of this document.