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 Power™ Systems, IBM.

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Paul February 26, at IBM did not publish any official information about potential performance impact, neither how the security flaw was solved.

Notify me of new comments via email. I did a query — show me the jobs which consumed CPU the most. There is almost no difference in CPU utilization. We have carefully put this patch to test systems and closely monitored the poer. Having this comprehensive set of information makes it easier to estimate the commercial workload CPU performance for any Power Systems server.

He can be reached at ccler forsythe.

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We use cookies to optimize your visit to our website. The fix is concurrent as long as you run the latest release level. Disk Flash Servers Software Tape. Actually, in the OS V7R2 no performance degradation noted either. If your workload is better aligns with two threads per processor core, you should consider reducing the published POWER7 rPerf numbers ivm approximately 15 to 20 percent to get a more reasonable representation of its rPerf value.


In addition, most benchmark rules require that the full benchmark be run and fully documented for each published data point. I will be giving updates in comming weeks.

Many benchmarks exist for comparing servers, so why did IBM create the rPerf measurement? The amount of rPerfs required to run existing workloads can be determined and used to size new servers. Read The Current Issue: The only way how to solve it, is to redesign the chip or patch the OS in the way that it will not allow rlerf use this vulnerability.

X We use cookies to optimize your visit to our website. These requirements would make it extremely costly to publish multiple data points for each Power Systems model. This has resulted in the publication of multiple rPerf values for each server based on varying processor core counts.

This tool collects statistics delivered by the HMC, which are the processor cycles dispatched by the Power Hypervisor.


This site uses cookies. The graph looks very similar. Home About me Contact. If not, a server reboot is needed. If you would like to change your cookie settings at any time please view our privacy policy for additional information.

The first patch was delivered on January 9th. More Articles From Charlie Cler. Left graph before patches, right one with patches.

I had no performance impact once this fix get applied. Running industry benchmarks can be very expensive. Roerf IBM owns and controls the rPerf benchmark, it can report both actual and estimated data for Power servers.

IBM Power Systems Performance Report

Patching is scheduled in waves. Charlie Cler supports customers in a solutions-architect role at Forsythe Technology Inc. But in the fix description there is an information that an Operating System updates are required too. As you can see, no significant grow after patching.

You are commenting using your WordPress. These I will installed within next days, and will try to deliver performance update to. Email required Address never made public.