TS/MP System Management Manual (G06.24+, H06.03+)

Managing the Pathsend Environment
NonStop TS/MP System Management Manual—541819-001
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LINKMON Processes
•
Returns an error to the application (Pathsend error 947, file-system error 43).
•
Logs one or more messages to the system log.
•
Returns to its original state and waits 10 seconds before processing additional
Pathsend procedure calls, so that subsequent sends to the uninitialized LINKMON
process do not flood $0.
When the LINKMON process receives the next SEND call, it tries again to initialize
itself.
Limits
During initialization, a LINKMON process allocates extended memory sufficient to
support the maximum number of:
•
PATHMON environments with which a LINKMON process can communicate
•
Server classes to which a LINKMON process can have outstanding links across all
PATHMON environments
•
Concurrent links to server processes across all PATHMON environments, per
LINKMON process
•
Concurrent, outstanding server-class send operations, per LINKMON process
(For the LINKMON process, a server-class send operation is outstanding until the
LINKMON process has replied to the Pathsend process.)
For more information about LINKMON limits, see Section C, Configuration Limits and
Defaults.
Extended Memory
LINKMON extended memory is supported by a disk swap file named
$SYSTEM.ZLINKMON.ZZLMnn, where nn is the processor number of the LINKMON
process.
For example, the LINKMON process $ZL01 in processor 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 processor 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 HP representative so that the problem can be
resolved. For more information about processor halt codes, see the Processor Halt
Codes Manual .