The Resource Measurement Facility (RMF) is the element of z/OS for performance management. This document contains information and reference material to enable you to use RMF data for application programming. There is a number of different ways of getting at different kinds of information, and each one is described in a separate chapter of this document. Further processing of RMF report data can also be done using spreadsheets. The Spreadsheet Reporter is described in the z/OS RMF User’s Guide. In addition, this document is describing diagnosis procedures that can be used in case of an error when running RMF.