APPC Subsystem on MPE/XL Node Manager's Guide (30294-90007)

Chapter 2 37

Interactive Control Operator Commands

APPCCONTROL PERFORMANCEON

Enables the gathering of session statistics and performance-related

data.

Syntax

APPCCONTROL PERF[ORMANCE]ON

Description

The APPCCONTROL PERFORMANCEON command enables the gathering of

APPC subsystem performance statistics.

NOTE

The APPCCONTROL PERFORMANCEON command does not display

performance statistics; it only enables the gathering of performance

statistics. To display performance statistics, issue the APPCCONTROL

PERFORMANCE command.

When the APPC subsystem starts up, statistics gathering is disabled by

default. Once the APPC subsystem is active, you can enable statistics

gathering by issuing the APPCCONTROL PERFORMANCEON command.

Executing the APPCCONTROL PERFORMANCEON command will not

interrupt the sessions for which statistics are being gathered.

To enable statistics gathering at subsystem startup,you specify PERFON

= YES in the APPCCONTROL START command, described later in this

chapter. If you start the APPC subsystem programmatically, you can

enable statistics gathering by setting the

PerformanceOn

parameter of

the APPCStart intrinsic to 1. See Chapter 3 , “Control Operator

Intrinsics,” for more information on control operator intrinsics.

NOTE

Statistics gathering must be enabled before you issue the APPCCONTROL

PERFORMANCE command. If you issue the APPCCONTROL PERFORMANCE

command with statistics gathering disabled, no statistics will be

available for display, and you will receive an error message. See the

description of APPCCONTROL PERFORMANCE, earlier in this chapter.