Performance system values: Automatically adjust thread resources
The Automatically adjust thread resources system value is also known as QTHDRSCADJ. You can use this system value to specify whether the system dynamically makes adjustments to the affinity of threads that are currently running on the system.
| Quick reference | |
|---|---|
| Location | From IBM® Navigator for i, select . Right-click on Performance and click Properties, then select the Affinity tab. |
| Special authority | All object (*ALLOBJ) and security administrator (*SECADM). |
| Default value | Selected. Automatically adjust. |
| Changes take effect | Immediately. |
| Lockable | No. |
What can I do with this system value?
You can specify whether the system should dynamically make adjustments to the affinity of threads that are currently running on the system. If some resources are being used more than others, the system can reassign some of the threads running on the more heavily used resources to have affinity to the less used resources.
In the character-based interface, specify 1 if you want the system to dynamically make adjustments to the affinity of threads; otherwise, specify 0.
If you have specified to group secondary threads using the Thread affinity (QTHDRSCAFN) system value, the threads within one process are all moved as a group. If jobs have been logically grouped with the routing entry or prestart job entry, the entire group is moved together. If this option is selected, the system attempts to distribute work evenly across all the system's resources.