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5
RTR Monitoring
This chapter contains a description of the RTR monitor. The RTR monitor
gives you a means of viewing the activities of RTR and your applications. Many
different aspects of RTR’s behaviour can be viewed, allowing the activities and
performance of RTR to be analyzed.
5.1 Introduction
The RTR monitor provides a means to continuously display the status of RTR and
the applications using it.
It can be used to check the correct operation of an RTR network, showing
information useful for tuning, capacity planning, and locating configuration and
application errors.
The information displayed is composed of named
data items
which are
continuously updated by RTR. These data items can be displayed in various
formats, and combined using simple arithmetic operators and constants.
The monitor is invoked with the
RTR MONITOR
command. RTR monitor displays a
monitor picture
that is periodically updated. See Section 6.2 for the full syntax
of the
MONITOR
command.
A monitor picture contains elements that are either text (such as labels and
titles) or variables derived from data items. Monitor pictures can be defined
either interactively at the
RTR>
prompt or defined in a file called a
monitor file
.
You can use monitor files that are provided with RTR, and you can create your
own. See Appendix A for information about creating monitor files.
5.2 Standard Monitor Pictures
A number of standard monitor pictures are supplied with RTR. These cover most
of the usual monitoring requirements. You may define your own monitor pictures
or alter the standard ones to suit your particular needs. Table 5–1 contains a
list of the standard monitor pictures. To display one of these pictures use the
following command at the RTR prompt:
RTR> MONITOR
picture-name
The files for standard monitor pictures are installed on your system when RTR
is installed. The location of these files is platform-specific. The filenames are
the picture name appended with
.mon
(You type the filename without
.mon
when
starting the display.)
RTR Monitoring 5–1