AIX 5L Problem Determination - IBM Redbooks

The sequence of attributes within a class (as shown in Figure 10-6 on page 281)
is outlined below:
► Class name
A unique class name with up to 16 characters. It can contain uppercase and
lowercase letters, numbers, and underscores (_).
► Description
An optional brief description about this class.
► Tier
A number between 0 and 9, for class priority ranking. It will be the tier that this
class will belong to. An explanation about tiers can be found in “Tiers” on
page 280.
► Resource Set
This attribute is used to limit the set of resources a given class has access to
in terms of CPUs (processor set). The default, if unspecified, is system, which
gives access to all the CPU resources available on the system.
► Inheritance
The inheritance attribute indicates whether a child process should inherit its
parent’s class or get classified according to the automatic assignment rules
upon exec. The possible values are yes or no; the default is no. This attribute
can be specified at both superclass and subclass level.
► User and Group authorized to assign its processes to this class
These attributes are valid for all the classes. They are used to specify the
user name and the group name of the user or group authorized to manually
assign processes to the class. When manually assigning a process (or a
group of processes) to a superclass, the assignment rules for the superclass
are used to determine which subclass of the superclass each process will be
assigned to.
► User and Group authorized to administer this class
These attributes are valid only for superclasses. They are used to delegate
the superclass administration to a user and group of users.
► Localchm
Specifies whether memory segments that are accessed by processes in
different classes remain local to the class they were initially assigned to, or if
they go to the Shared class.
Segment authorization to migrate to the Shared class
With Workload Manager in earlier versions of AIX, whenever a memory segment
is accessed by processes from different classes, the segment is reclassified as
282 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques