TS/MP System Management Manual (G06.24+, H06.03+)
NonStop TS/MP System Management Manual—541819-001
7-1
7
Tuning Your System by Using
Statistics
This section describes statistics collected for server processes. These statistics are
collected when you execute the STATS SERVER command. See the description of the
STATS SERVER Command on page 12-37.
This section is divided into two parts:
•
The first part describes server process performance statistics that both the
LINKMON process and the TCP collect.
•
The second part describes server process performance statistics collected only by
the TCPs. Because TCPs are provided by the Pathway/iTS product, you can
display these server statistics only if your environment includes the Pathway/iTS
product.
You can use the statistics generated by transaction processing functions in the
PATHMON environment to detect bottlenecks within the LINKMON process or—if you
have Pathway/iTS—the TCP. Based on careful analysis of these statistics, you can
reconfigure your PATHMON environment to eliminate some performance
degradations.
Other factors affecting system performance are not represented in these statistics.
Such factors generally involve contention for system resources, for example, the ability
of the PATHMON process to grant links promptly
Statistics produced by the NonStop operating system can shed light on the
performance of these types of functions. For more information about statistics
produced by the operating system, see the
Measure User’s Guide
and
the
Measure
Reference Manual
.
Server Statistics Collected by the LINKMON
Process and the TCP
LINKMON processes and TCPs gather statistics for a single server class or for
multiple server classes. The statistics are gathered by:
•
LINKMON processes with links to a server process in the class
•
TCPs that open a server process in the class—but only if these TCPs are
configured with the STATS parameter set to ON
Server statistics show the amount of link manager resources used to communicate
with a server class. Server statistics collected by both LINKMON processes and TCPs
provide information about: