gtps3m0oSystem Performance and Measurement Reference

Details of System Collection

Working Storage Usage

When JCS0 records the number of storage blocks in use, the count includes those blocks used by data collection.

Time Stamp

Once activated, JCS0 collects specified data and then time stamps the data record just before passing the record to the data collection tape. During the continuous mode, JCS0 waits for JCF0 to collect the file data prior to collecting the system data and recording the time stamp.