Performance system values: Automatically adjust thread resources

Specifies whether or not the system should dynamically make adjustments to the affinity of threads currently running on the system. (QTHDRSCADJ)

Automatically adjust thread resources, also known as QTHDRSCADJ, is a member of the performance category of i5/OS™ system values. You can use this system value to specify whether the system dynamically makes adjustments to the affinity of threads currently running on the system or not. To learn more, keep reading.

Quick reference
Location In iSeries™ Navigator, select your system, > Configuration and Service > System Values > Performance > Affinity
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?

Specifies whether the system should dynamically make adjustments to the affinity of threads currently running on the system (1) or not (0). If some resources are being used more than others, the system may reassign some of the threads running on the more heavily used resources to have affinity to the less used resources.

If you have specified to group secondary threads using the thread affinity (QTHDRSCAFN) system value, the threads within one process will all be moved as a group. If jobs have been logically grouped with the routing entry or prestart job entry, the entire group will be moved together. If this option is selected, the system will attempt to distribute work evenly across all the system's resources.

Where can I get more information about this system value?

To learn more, go to the performance system values overview topic. If you are looking for a specific system value or category of system values, try using the i5/OS system value finder.

Related concepts
System values: Performance overview
Performance system values: Thread affinity
Related information
System value finder