TS/MP 2.5 System Management Manual

triggers PATHMON to start the rebalancing of the server processes on the specified processor. The
PATHCOM rejects this command if the PATHMON processes are not configured to run in MANUAL
mode. The number indicates the CPU number on which server processes are to be rebalanced.
The command accepts processor number as a parameter. The server processes which used to run
on the mentioned processor before processor failure, will be shifted back to the original processor.
To validate this command the CPU number must be between 0 -15 and PATHMON must be configured
to run in MANUAL mode (SPREBALANCEMODE). This CPU number will be considered as a CPU
number that is local to PATHMON process.
Considerations
• If the primary PATHMON process is running in the processor defined for the backup PATHMON
process because of a SWITCH command or some other processor change, the BACKUPCPU
option causes the PATHMON process to change the PATHMON configuration file so that it
contains the current processor numbers for both the primary and backup PATHMON processes.
• When you cool start a Pathway environment (that is, when you use a pre-existing configuration
file to start a Pathway environment) after using the CONTROL PATHMON command, the
PATHMON process uses the values you changed with the CONTROL PATHMON command.
• When the creation of a backup process fails more than ten times, the PATHMON process
delays trying to create a backup process. The delay is 1 minute if stopped 11 times, 2 minutes
if stopped 12 times, and so forth. However, the PATHMON process does not delay creating
a backup process if any of these occur:
◦ The processor in which the PATHMON primary or backup process is executing fails.
◦ A PATHCOM SWITCH command is run.
◦ A CONTROL PATHMON BACKUPCPU command is run.
In addition to not delaying the creation of a backup process if the preceding conditions occur,
the PATHMON process resets its internal counter. Consequently, creation of a backup process
has to fail again 10 more times before the PATHMON process delays creating the backup
process.
• HP recommends that DUMP is set to ON for production systems. Having a DUMP file available
greatly enhances your ability to solve system problems, and is a likely requirement when
requesting help from your HP representative.
• If you encounter system problems and the PATHMON process has not created a dump (because
DUMP was not set to ON), use the DUMPMEMORY option to force a dump.
Errors
This table lists the most common errors that can occur during the processing of the CONTROL
PATHMON command:
Is Displayed When…This Message…
The processor number mentioned in the CONTROL PATHMON
SPREBALANCECPU command is down, the rebalancing of the server
*1168* REBALANCE PROCESSOR DOWN
152 PATHMON Environment Control Commands