The PERFKIT can create HISTORY DATA files, which can be looked at as "condensed monitor data" files. The PERFKIT can also process these
data files via the PERFKIT MENU OPTION 32 HISTORY DATA FILES. Within the ACUM HISTSUM and the YYYYMMDD HISTLOG I can see the CPU Utilization on each monitor interval. I fI am interested in a specific user(s), I then simply BENCHMRK these users, and can also get the same type of "condensed " monitor records as well...utilizing MUCH LESS disk space than RAW CP Mondata. I would advise to check this out. Best Regards, Roger Lunsford z/VM CPL2, Perfkit L2/L3