Profiling an Application

The Profiler command in the Jade User Interrupt submenu enables you to record actual and total times spent in JADE and external methods in an application.

It is recommended that when investigating application performance, only one of the JADE Profiler, JADE Monitor, or method profiling is used at any one time, as the results reported when any of these are combined is undefined.

Selecting the Start command starts the recording of times spent in methods during the running of the selected application. These statistics continue to be recorded to memory until you terminate the application or you select the Stop command or the Report command.

The profile statistics are output to a file only when you select the Report command.

The statistics are cleared from memory when you perform one of the following actions.

Select the Reset command.
Report the profile statistics to file, by selecting the Report command.

To access the Profiler submenu

Select the Profiler command.

The Profiler submenu, containing commands that control the recording of your application profile statistics, is then displayed. Use these commands to optimize your JADE code, by analyzing the performance of your JADE and external methods.

The Profiler submenu commands are listed in the following table.

Method	Description	For details, see…
Start	Starts the capture of profile statistics for the selected application	Starting the Recording of Profile Statistics
Stop	Stops the capture of profile statistics for the selected application	Stopping the Recording of Profile Statistics
Reset	Clears profile statistics	Clearing Profile Statistics
Report	Outputs profile information about time spent in methods to a log file	Reporting Profile Statistics
Report CSV	Outputs profile information about time spent in methods to a comma‑separated values file	Reporting Profile Statistics to a CSV File

For details, see the following subsections.

In the JADE development environment, you can use system methods provided by the Process class to control the recording of profile statistics in specific methods, if required. For details, see "Process Class", in Chapter 1 of the JADE Encyclopaedia of Classes.