Three SMF record types are particularly useful for analyzing the performance of DFSORT: type-30, type-16, and type-42. To collect an SMF record type, make sure that the active SMFPRMxx member is set up to collect that particular type. For type-30 records, make sure subtype 4 (step total) records are collected. If device connect time and EXCP statistics are desired in the type-30 (subtype 4) records, the DETAIL option must be in effect. For type-42 records, make sure subtype 6 (data set statistics) records are collected. See z/OS MVS Initialization and Tuning Reference for more information on setting up an SMFPRMxx member.