NonStop Server Guide for BEA WebLogic Server 8.1

Using the WS Plug-in
HP NonStop Server Guide for BEA WebLogic Server 8.1—529891-001
8-10
Defining the WS Plug-in Server Class
The statistics information is repeated for each target application server process in the
cluster.
prefix
The URL prefix to which these statistics relate.
Address and Port
NonStop TCP/IPv6 address and port that the target application server process is
configured to use.
Capacity
is calculated based on the number of posts and new session creations that
occurred during the previous STATS_PERIOD. If the application does not use
HTTP sessions, the session count is not included in the calculation. A capacity of
-1 indicates that the target application server process is marked as failed.
posts and sessions
the count of posts and sessions that occurred during that period plus 10 percent of
the total for the previous period. The WS Plug-in defines a 'post' as any POST
directive or a GET directive that includes a query string. This approach is designed
to distinguish requests that will cause the Application Server to perform tasks that
are likely to consume significant resources from requests that merely entail the
Application Server returning static content.
If RATED_STATS is set to ON, these values are the average number per minute
during the STATS_PERIOD. If the application does not use HTTP sessions, the
New Session value is omitted from the statistics display.
SESSION_BALANCING
The default approach to load balancing is round-robin. This means that each WS
Plug-in process will send subsequent requests to a different member of the cluster.
Setting this option to ON causes the WS Plug-in to use the posts, sessions and
capacity values (see above) to determine the best member of the cluster to use.
KEEP_ALIVE
causes the WS Plug-in to retain the NonStop TCP/IPv6 connection with an
Application Server at the end of each request. If this variable is not set to ON,
NonStop TCP/IPv6 closes connection with an Application Server at the end of
each request. The default is OFF. This feature is provided for compatibility with the
existing RLS product. When using the WS Plug-in with the WebLogic Server, you
should usually set this option to ON. However, in the event of problems with having
too many NonStop TCP/IPv6 connections, you might want to suppress this feature.