Tandem Capacity Model (TCM) Manual

Figure 47 TCM Parameters Screen
Significant Rows
1. Number of Batch CPUs—Directly Modifiable
Number of Batch CPUs is the number of CPUs assigned to batch transactions. The default is
All. For more information on this parameter, see “Number of Batch CPUs” (page 101).
2. Maximum CPU Utilization—Directly Modifiable
Maximum CPU Utilization is the percentage of CPU that is available for batch activity. The
default is 100 percent. For more information on this parameter, see “Hardware Utilization
Thresholds for CPU and Disk” (page 101).
3. Maximum Disk Utilization—Directly Modifiable
Maximum Disk Utilization is the percentage of disk that is available for batch activity. The
default is 50 percent. For more information on this parameter, see “Hardware Utilization
Thresholds for CPU and Disk” (page 101).
4. Calculate Batch response times with completed jobs removed from the system—Directly
Modifiable
This option determines how batch jobs are handled. When this option is set to TRUE, batch
jobs are removed from the system when they complete. The remaining jobs then speed up
because the CPU and disk resources are shared by fewer active jobs. When this option is set
148 The Performance Model