Issue No. 04 - July/August (1972 vol. 5)
The performance of computer systems cannot be seriously and meaningfully measured unless the work- load the system is dealing with during the measurement sessions is carefully selected. Even in the case the real workload is driving the system while measurements are being performed, such questions as determining the dura- tion of a session and the intervals of system activity to be monitored arise.
D. Ferrari, "Workload charaterization and Selection in Computer Performance Measurement", Computer, vol. 5, no. , pp. 18-24, July/August 1972, doi:10.1109/C-M.1972.216939