Pathway/XM System Management Manual

Managing a Pathway/XM Environment
Compaq NonStop™ Pathway/XM System Management Manual—426761-001
7-27
Configuration Tasks
Extended Memory
LINKMON extended memory is supported by a disk swap file named
$SYSTEM.ZLINKMON.ZZLMnn, where nn is the CPU number of the LINKMON
process.
For example, the LINKMON process $ZL01 in CPU 1 uses the swap file
$SYSTEM.ZLINKMON.ZZLM01. These swap files, created by the LINKMON
processes, are owned by the super user and secured with four dashes (“----”) so that they
can be accessed only by the super user.
Processor Halt Codes
If a LINKMON process encounters internal errors, it stops the CPU in which it is
executing. LINKMON processes use processor halt codes %7500 through %7577,
inclusive, to indicate LINKMON internal errors. If a processor in your system stops
with any LINKMON halt code, call your Compaq representative so that the problem can
be resolved. For more information about processor halt codes, refer to the Processor
Halt Codes Manual.
Configuration Tasks
To enable communication between Pathsend processes and server processes, you must
configure your Pathway/XM environment to specify the following:
•
The number of LINKMON processes that your PATHMON environment can
support at one time
•
The appropriate security to control access to server classes
You cannot configure or control LINKMON processes with PXMCFG or PXMCOM
commands in the same way that you control and configure other Pathway/XM objects.
You can, however, monitor the LINKMON processes, as described later in this section.
Specifying the Maximum Number of LINKMON Processes
When you configure your Pathway/XM environment, you specify the maximum number
of LINKMON processes that the Pathway/XM environment can support at one time by
setting the MAXLINKMONS attribute with the SET PATHWAY command. The value
you set for this attribute determines the maximum number of LINKMON processes that
can communicate with the well-known named PATHMON process. This is the only
PATHMON process in your Pathway/XM environment with which LINKMON
processes can communicate.
The following example specifies that a maximum of 16 LINKMON processes can
access your Pathway/XM environment through the well-known named PATHMON
process:
SET PATHWAY MAXLINKMONS 16
Note. If you do not specify a nonzero value for the MAXLINKMONS attribute, any attempt by a
Pathsend process to perform a server-class send operation to a server class in the
Pathway/XM environment fails. The default value of the MAXLINKMONS attribute is zero.