NET/MASTER Management Services (MS) System Management Guide

Operating Modes
Configuring the Processing Environment
11–38 115414 NonStop NET/MASTER MS System Management Guide
An indication of the time at which you should consider changing from extended basic
mode to advanced mode is this: you are experiencing less-than-satisfactory
performance in the processing of EMS events and you want to improve the
performance of the EM function. To understand why you should use this indication,
consider the following line of reasoning.
The most significant result of changing from extended basic mode to advanced mode
is that no NC processes are configured in advanced mode. Therefore, determining
when to change from extended basic mode to advanced mode means determining
when it is better to run NonStop NET/MASTER MS without an NC process: with
only BK, EM, IS, and MS processes.
In basic mode, the NC process handles all work. In extended basic mode, one result of
configuring BK, IS, or MS processes, in addition to the NC process, is that workload is
spread among processes, as follows:
With an NC process and one or more BK processes, virtual users and their
workload are spread among the NC and BK processes.
With an NC process and one or more IS processes, the NC process and each IS
process is assigned one link.
With an NC process and one or more MS processes, interactive user logons are
spread among the NC and MS processes.
However, with an NC process and one or more EM processes, either the NC process or
an EM process can support the EM function, but only one process handles the EM
function. Unlike other application process functions, the EM function is not spread
among EM-supporting processes, regardless of the number of EM-supporting
processes available.
Therefore, if the NCP assigns the EM function to the NC process at NonStop
NET/MASTER MS startup, the NC process handles the entire EM function while
NonStop NET/MASTER MS is running, and any EM processes remain idle.
Conversely, if the NCP assigns the EM function to an EM process at NonStop
NET/MASTER MS startup, the EM process handles the entire EM function, and the
EM function of the NC process is idle. Process resources are wasted in both cases.
Additionally, if the NC process handles the EM function, the EM function competes
with the BK, IS, and MS functions, which are also handled by the NC process.
However, if an EM process handles the EM function, competition for resources in the
same process is eliminated. Therefore, the EM function may be more efficient if
handled by an EM process rather than an NC process.
In extended basic mode, you can force the NCP to assign the EM function to an EM
process rather than an NC process if you configure one dynamic NC process and one
static EM process. The NCP assigns the EM function to the static EM process rather
than the dynamic NC process at NonStop NET/MASTER MS startup because the
static EM-supporting process is preferred over the dynamic EM-supporting process.
This configuration is likely to improve the efficiency of the EM function, but process
resources remain wasted because the EM function of the NC process remains idle.