TS/MP 2.5 System Management Manual

In certain network situations, communication delays between the PATHMON process and link
manager that is the ACS subsystem process can reduce response time even further.
Improving Performance
You can improve PATHMON performance in some instances by reconfiguring your PATHMON
environment. These subsections describe options that you might want to consider.
Configure for Sufficient Number of Links
You must ensure that there are enough links available in the system initially by specifying appropriate
values for MAXLINKS, LINKDEPTH, MAXSERVERS, and MAXSERVERPROCESSES.
Use Multiple PATHMON Processes to Manage Servers and Associated Links
You can create separate PATHMON processes to manage servers and their associated links. By
distributing link management among multiple processes, you improve response time. The cost,
however, is increased operational complexity.
Information to Include When Reporting Problems
When requesting your HP representative’s help in resolving a problem with NonStop TS/MP, you
can greatly enhance the representative’s ability to help you by providing this information, where
applicable.
PATHMON Environment
These files and information apply to the PATHMON environment as a whole.
Version Procedure
Use the VPROC procedure to get the product version for the applicable PATHMON components,
as follows:
>VPROC
Enter filename:
>$<vol.subvol>.PATHCOM
>$<vol.subvol>.PATHMON
where $vol.subvol is the system volume and subvolume on which the desired component resides.
Event Log and CONFLIST
Be sure to collect any PATHMON and EMS log files. Also include the $SYSTEM.SYSnn.CONFLIST
file.
Configuration and Startup Information
If you are able to reproduce the problem, give the HP representative a simple test case illustrating
the problem along with a description of how to reproduce it. Otherwise, give the representative
the object modules and data files (PATHCONF files) making up the PATHMON configuration when
the error occurred.
PATHMON-Specific Problems
Collect this information when you detect a problem with the PATHMON process itself.
PATHMON Dump
As explained in “Requesting Error Dumping” (page 41)you can request error dumping by specifying
either the SET PATHMON, DUMP ON command or the CONTROL PATHMON command. If you request
your HP representative’s help in analyzing a problem, the representative will likely require a DUMP
file. It is therefore recommended that DUMP be set to ON for production systems.
Information to Include When Reporting Problems 103