QMF supports your performance management needs and provides features that help you manage and control your QMF query environment.
QMF's governor exit controls the number of rows returned from the database and, in the TSO and CMS environments, the amount of processor time a query can use.
The QMF High Performance Option (HPO) for OS/390 and z/OS feature builds on QMF's performance and QMF control capabilities.
QMF for Windows manages your queries from the Windows environment, while QMF HPO/Manager controls queries from the QMF host environment.