System information

Chapter 12. Using Work Management to influence System i5 resources 375
12.2.3 ADDRTGE command — new parameters
In the following sections we provide a description of the new parameters.
Thread resources affinity (THDRSCAFN)
This specifies the affinity of threads to system resources.
򐂰 Element 1: Group, single values
– *SYSVAL
When a job is started using this routing entry, the thread resources affinity value from
the QTHDRSCAFN system value will be used.
– *NOGROUP
Jobs using this routing entry will have affinity to a group of processors and memory.
Secondary threads running under the job will not necessarily have affinity to the same
group of processors and memory.
– *GROUP
Jobs using this routing entry will have affinity to a group of processors and memory.
Secondary threads running under the job will all have affinity to the same group of
processors and memory as the initial thread.
򐂰 Element 2: Level
– *NORMAL
A thread will use any processor or memory if the resources it has affinity to are not
readily available.
– *HIGH
A thread will only use the resources it has affinity to, and will wait until they become
available if necessary.
Resources affinity group (RSCAFNGRP)
This specifies whether or not jobs using this routing entry will be grouped together having
affinity to the same system resources (processors and memory). A value of *YES for this
parameter will take precedence over the QTHDRSCAFN system value when set to
*NOGROUP.
򐂰 *NO
Jobs that use this routing entry will not be grouped together.
򐂰 *YES
Jobs that use this routing entry will be grouped together such that they will have affinity to
the same system resources. Jobs that share data in memory may perform better if they
have affinity to the same resources.