IBM’s Relative Performance (rPerf) metric is a great tool for comparing commercial workload performance between different Power System servers. It’s often. This post outlines a recent Nigel Griffiths tweet about estimating rperf for your LPAR. Read on to find out more. Articles on IBM AIX performance including server throughput, system performance and IBM AIX commands.
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If it says estimated then it is NOT an official number. The amount of rPerfs required to run existing workloads can be determined and used to size new servers. Additionally, the actually real world performance of a given server might be affected over time by improvements or bugs in the firmware, AIX, or the application while the official rPerf is seldom changed in the Power Systems Performance Report after the initial release of the server model.
You will have to apply your own rules for that. There is no simple way to convert from roltp to rPerf – sorry. Implement these techniques to improve data-center resiliency.
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However, there are times when this approach isn’t possible.
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Note that rPerf can only be used for making comparisons within Power servers. Management has already specified the software architecture and is rpedf to start hardware procurement.
Running industry benchmarks can be very expensive. Type in a Name: The most exciting POWER6 enhancement, live partition mobility, allows one to migrate rpeff running LPAR to another physical box and is designed to move running partitions from one POWER6 processor-based server to another without any application downtime whatsoever.
The pSeries is the baseline reference system and has a rerf of 1. Disk Flash Servers Software Tape. This is the configuration used in working out rPerfs and unused DIMM slots or minimum memory will reduce performance. In addition, most benchmark rules require that the full benchmark be run and fully documented for each published data point.
Latest AIX with Service Packs – aiix all benchmarks, the best operating system version is used to get those latest performance fixes and improvements. This is especially important for older, single threaded applications that cannot exploit the benefits of SMT.
Specifically, a computer benchmark is a computer program that performs a strictly defined workload set of operations and returns some form of measurable result i.
You have to be realistic and understand that you will need to be able zix move up to later levels of software and firmware to take advantage of improvements.
Having stated that, many people use rPerfs as a simplistic way of preparing a guesstimate to planning new machines based on running POWER workloads for both workload migration and server consolidation. For example, suppose that a company has aixx to roll out a new Web-based ordering system. There are similar assumptions when dealing with LPARs of smaller sizes than the official rPerf numbers. In this case, the script guesses the rPerf based on rPerf numbers in a fairly crude way.
If you want to know what rperf used to rperc out your rating use: AIX Live Update with This has resulted in the publication of multiple rPerf values for each server based on varying processor core counts.
How do I use the vio