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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Do not forget that fixes for VIOSes were released as well. Disk Flash Servers Software Tape. This site uses cookies. These requirements would make it extremely costly to publish multiple data points for each Power Systems model.

Martin February poer, at The roll out takes time. If not, a server reboot is needed.

Many benchmarks exist for comparing servers, so why did IBM create the rPerf measurement? Paul February 26, at The only way how to solve it, is to redesign the chip or patch the OS in the way that it will not allow to use this vulnerability. Email required Address never made public.

The amount of rPerfs required to run existing workloads can be determined and used to size new servers. IBM did not publish any official information about potential tperf impact, neither how the security flaw was solved.

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This data is far away from precise capacity information, but I said before, this is the quickest powet.

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

As you can see, no significant grow after patching. Home About me Contact.

There is no difference again. You are commenting using your Facebook account. Today Jan 31st we applied the fix on few test systems.

In addition, most benchmark rules require that rperv full benchmark be run and fully documented for each published data point. Jimmy May 7, at These I will installed within next days, and will try to deliver performance update to.

I had no performance impact once this fix get applied.

IBM Power Systems Performance Report

Notify me of new comments via email. By continuing to use this website, you agree to their use. I did a query — show me the jobs which consumed CPU the most. Patching is powee in waves. But in the fix description there is an information that an Operating System updates are ib too. Fill in your details below or click an icon to log in: From information what we got so far, it looks that almost every modern chip which uses speculative processing is affected.

IBM Power System CPW Performance Data: POWER8 vs. POWER9 ScaleOut Models

In the end you can compare poser graphs before and after, and here there are no significant changes either. Unfortunately, IBM is very conservative in published information regarding the vulnerability. Getting the PTF on the system was a big question mark and probably many users still feel uncomfortable with number of available information.


The main reason was to publish data for a broad selection of Power Systems servers. More Articles From Charlie Cler. He can be reached at ccler forsythe.

How to Use rPerfs for Workload Migration and Server Consolidation

This has resulted in the publication of multiple rPerf values for each server based on varying processor core counts. Having this comprehensive set of information makes it easier to estimate the commercial workload CPU performance for any Power Systems server. Of course, I have no idea what these or those PTFs fixed. Leave a Reply Cancel reply Enter your comment here Read The Current Issue: I just believe they did something.

Since IBM owns and controls the rPerf benchmark, it can report both actual and estimated data for Power servers.