Resource controls

WPARs support up to 8192 resource-controlled workload partitions. The number of non-resource-controlled WPARs that can be created is constrained only by the availability of global environment memory and disk space resources. However, a maximum of 8192 can be active at any time.

You can change the resource controls for a WPAR dynamically using the chwpar command. If the process or thread limit is reduced on an active WPAR, processes or threads are not terminated, but new process or thread creation is not allowed until the total count falls below the specified limit. For example, if a WPAR has 200 active processes and you change the total process limit on the WPAR to 170, then the system will not terminate the extra 30 processes. New process creation within the WPAR is not allowed until the process count falls below 170. You can enable resource controls for a WPAR when it is created. You can also change the controls on an existing WPAR using SMIT or using the chwpar command with the -R active = yes option.