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Section 2 – AIX Multiuser Performance (rPerf, POWER8 and up). CPW results of IBM Power Systems servers running the IBM i operating. rPerf is a computer benchmark that evaluates the relative OLTP performance of servers based on IBM POWER microprocessors. It is published by IBM and. Section 2a – AIX Multiuser Performance (rPerf, SPEC CPU, . All performance measurements for the IBM Powerâ„¢ Systems, IBM.

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If not, a server reboot is needed. Martin February 19, at You are commenting using your WordPress. Nevertheless, IBM has already delivered number of patches. I will be giving updates in comming weeks. The graph looks very similar. In addition, most benchmark rules require that the full benchmark be run and fully documented for each published data point. To find out more, including how to control cookies, see here: Bart February 19, at These I will installed within next days, and will try to deliver performance update to.

Left graph before patches, right one with patches. Having this comprehensive set of information makes it easier to estimate the commercial workload CPU performance for any Power Systems server.

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These requirements would make it extremely costly to powef multiple data points for each Power Systems model. Unfortunately, IBM is very conservative in published information regarding the vulnerability.

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Charlie Cler supports customers in a solutions-architect role at Forsythe Technology Inc. The only way how to solve it, is to redesign the chip or patch poqer OS in the way that it will not allow to use this vulnerability.

IBM POWER rPerf and CPW Consolidated Data (inc POWER9) (IBM STG Lab Services UK&I POWER Team)

We have carefully put this patch to test systems and closely monitored the performance. I will try to update this post within next days, because last Friday I just believe they did something.

Getting the PTF on the system was a big question mark and probably many users still feel uncomfortable pwoer number of available information.

But in the fix description there is an information that an Operating System updates are required too. Leave a Reply Cancel powwr Enter your comment here In the end you can compare wait graphs before and after, and here there are no significant changes either.

rPerf – Wikipedia

More Articles From Charlie Cler. He can be reached at ccler forsythe. The fix is concurrent as long as you run the latest release level. As you can see, no significant grow after patching. We use cookies to optimize your visit to our website.

Home About me Contact. Actually, in the OS V7R2 no performance degradation noted either.


The amount of rPerfs required to run existing workloads can tperf determined and used to size new servers. The main reason was to publish dperf for a broad selection of Power Systems servers. Disk Flash Servers Software Tape. Notify me of new comments via email. Jimmy May 7, at Read The Current Issue: This tool collects statistics delivered by the HMC, which are the processor cycles dispatched by the Power Hypervisor.

Patching is scheduled in waves.

How to Use rPerfs for Workload Migration and Server Consolidation

Many benchmarks exist for comparing servers, so why did IBM create the rPerf measurement? Of course, I have no idea what these or those PTFs fixed.

If you would like to change your cookie settings at any time please view our privacy policy for additional information. Paul February 26, at X We use cookies to optimize your visit to our website. Note that rPerf can only be used for making comparisons within Power servers. The first patch was delivered on January 9th.

Not sure if there is anyone in IT world who has not heard about latest vulnerabilities in the modern chips.