The table describes the Control‑O components that use ECSA.
Table 185 ECSA Usage (Above the 16 MB Line)
Component |
Size |
Description |
---|---|---|
Subsystem executor |
250 K |
|
Wait elements |
160 K |
By default, the Control-O monitor allocates 20 wait elements of 8 K each, in internal control blocks called PNDs. The number of allocated PND buffers can be overridden with the WAITPR# parameter of the Control statement in CTOPARM. For further information on the PND# parameter see the INCONTROL for z/OS Installation Guide: Installing and NCONTROL for z/OS Installation Guide: Customizing. |
Work Buffers |
480 K |
By default, the Control-O monitor allocates 20 work buffers of 24 K each, in internal control blocks called WSCs. The number of allocated WSC buffers can be overridden with the WSC# parameter of the Control statement in CTOPARM. For further information on the WSC# parameter see the NCONTROL for z/OS Installation Guide: Installing and NCONTROL for z/OS Installation Guide: Customizing. |
Rules |
50 K |
This amount assumes 500 rules and an average of 100 bytes per rule. |
XES preallocated buffers |
3000 K |
Preallocated buffers for XES operations. (The value of 3000K is appropriate for a system with 4 CPUs. The approximate value for 8 CPUs is 6000K, for 16 CPUs 12,000K, and so forth.) |
Total |
3940 K |
For a system with 4 CPUs. |
Parent Topic |