AIX 5L Problem Determination - IBM Redbooks

e excluded by using an exclamation point (!) prefix. Patterns can be specified to
match a set of group names using full Korn shell pattern matching syntax.
Applications that use the setgid permission to change the effective group ID they
run under are still classified according to the group that invoked them. The
processes are only reclassified if the change is done to the real group ID (GID).
Application path names
The full path name of the application for a process can be used to determine the
class to which a process belongs. This attribute is a list composed of one or more
applications, separated by a comma (,). The application path names will be either
full path names or Korn shell patterns that match path names. Application path
names can be excluded by using an exclamation point (!) prefix.
Process type
In AIX 5L, the process type attribute is introduced as one of the ways to
determine the class to which a process belongs. This attribute consists of a
comma-separated list, with one or more combination of values, separated by a
plus sign (+). A plus sign provides a logical and function, and a comma provides
a logical or function. Table 10-4 provides a list of process types that can be used.
(Note: 32bit and 64bit are mutually exclusive.)
Table 10-4 List of process types
Attribute value Process type
32bit The process is a 32-bit process.
64bit The process is a 64-bit process.
plock The process called plock() to pin memory.
fixed The process has a fixed priority (SCHED_FIFO or SCHED_RR).
Application tags
In AIX 5L, the application tag attribute is introduced as one of the forms of
determining the class to which a process belongs. This is an attribute meant to
be set by WLM’s API, as a way to further extend the process classification
possibilities. This process was created to allow differentiated classification for
different instances of the same application. This attribute can have one or more
application tags, separated by commas (,). An application tag is a string of up to
30 alphanumeric characters.
The classification is done by comparing the value of the attributes of the process
at exec time against the lists of class assignment rules to determine which rule is
a match for the current value of the process attributes.
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