CPU Workload Estimator
It is the feature which allows users make CPU estimation before is moved new workload on the server
Learn here how it can help in your migrations.
Before move any partition to a new server (by any kind of migration) you can assure that new CPU workload fits to CPU resources available on target server
When you enter CPU Workload Estimator page, then simply select on the left panel target server and CPU pool and on the right panel select one or more lpars which will be migrated. Then generate the graph. Default time range is 1 week.
Then you see an aggregated graph of last week with selected CPU pool of target server and selected lpars
You see how would look like the CPU load last week if lpars have been already there.
CPU estimations based on rPerf or CPW benchmark
CPU estimation based on CPU core is correct for situations where target server and lpars are on the same HW platform (same model, CPU frequency, number of cores...)
In case of different platforms like target server is IBM Power 710 and there are going to be migrated lpars from IBM Power 795 then estimations based purely on CPU core will not be accurate.
Therefore there is possibility on the main CPU Workload Estimator page to select rPerf benchmark for AIX based server or CPW for i5/OS based server. Then estimations are based on that bencmark. This assures correct estimation for migrations between different IBM Power™ servers.
where you can try it on-line.
CPU core based estimations is available in free LPAR2RRD distribution. rPerf or CPW estimation feature is available only in full LPAR2RRD version distributed only to customers under support.
Major enhancement in v3.30
You can now make estimation for new servers (complete IBM Power™ product line). It is no longer restricted only to already existing servers in your environment.
Now there is another panel, with list of complete IBM Power™ server line. You can select as the target server either a new server from that new left panel or use already existing server or pool from the middle panel.
That means that you are now able to do estimation for future CPU load of servers before you order a new HW!! All based on your actual CPU workload
This enhancement is useful especially with usage of rPerf/CPW benchmark based estimations available only in full LPAR2RRD version.