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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Performance tuning is always an iterative process of removing one performance rperr in order to reveal the next performance bottleneck. This is especially important for older, single threaded applications that cannot exploit the benefits of SMT. We use cookies to optimize your visit to our website. Particularly, take and early opportunity to apply the first two updates after the initial release. How do I use the vio More Articles From Tom Farwell. But I hope this blog entry will help every one to either get it right first time or at least set realistic expectation and outline some prime areas that will need investigation to realise benefits, thanks Nigel Tags: If you are break just one or two and then only a little bit then you never know – “you might get lucky”.

Type aaix a Name: Running the same computer benchmark on multiple computers allows for comparison. The script will give a lower than actual rPerf number. The main reason was to publish data for a broad selection of Power Systems servers.


How to Use rPerfs for Workload Migration and Server Consolidation

The model simulates some of the system operations, such as CPU, cache and memory. There are similar assumptions when dealing with LPARs of smaller sizes than the official rPerf numbers.

Note, although rPerf may be used to compare estimated IBM UNIX commercial processing performance, actual system performance may vary and is dependent upon many factors, including system hardware configuration, software design, and configuration. He can be reached through www. Having stated that, many people aic 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.

The Fast Path to Great Performance. The biggest pitfall is trying to use benchmarks without knowing the system bottleneck. If you are wix a lot of these assumptions then you may not get the performance you expected or hoped to achieve.

Recent AIX version are much better out of the box but the basics rpwrf need to be monitored and checked. However, there are times when this approach isn’t possible. If you would like to change your cookie settings at any time please view our privacy policy for additional information.

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IBM Systems Magazine – AIXchange blog

The performance capabilities of an server requires systematic roerf to unleash the full performance potential of the underlying computing platform. Disk Flash Servers Software Tape.

He can be reached at ccler forsythe. If your workload is better aligns with two threads per processor core, you should consider reducing the published POWER7 rPerf numbers by approximately 15 to 20 percent to get a more reasonable representation of its rPerf value.


Numerous benchmark programs are in use today. Also no SAN bottlenecks.

We use cookies to optimize your visit to our website. The rperf numbers are only available for certain number of CPUs. In this case, the script guesses the rPerf based on rPerf numbers in a fairly crude way.

Many benchmarks exist for comparing servers, so why did IBM create the rPerf measurement? IBM is currently completely out of “magic pixie dust” to fix problems without changes. Thanks for your use, help and feedback, Nigel Griffiths. Achieving a Resilient Data Center Implement these techniques to improve data-center resiliency.

rPerf Definition from PC Magazine Encyclopedia

There is no way to convert a roltp number to a rPerf. Running industry benchmarks can be very expensive. If one is studying the performance of a computer system, logic states that the best way is ax apply the actual workload on the system and measure the results.

Running older software from the older machines can cause a mismatch with your rPerf expectation. These guidelines may help you achieve the performance that you expected.

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