Glossary

rPerf (Relative Performance)

rPerf

IBM's broader relative-performance metric, used across AIX and general Power sizing, distinct from the IBM i-specific CPW metric.

rPerf and CPW are both IBM sizing metrics but are not directly interchangeable -- CPW is IBM i-specific, rPerf is used more broadly across AIX and Linux. Both are referenced in this site's generation graph where publicly available.

Related Terms

CPW (Commercial Processing Workload)

IBM's relative performance metric for sizing IBM i systems, used to compare capacity across processor features and generations.

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