Perforce JViews Gantt Sample: Benchmarking Gantt Charts

Description

This sample shows the performance of the Gantt and Schedule charts.

How to Use the Sample

• Press the Run button to create the chart with the default choices.
• Look at the performance results. The right part of the window shows the measured times of the different steps of the chart creation and display.
• Select other:
  • Ways to create the data
  • Chart sizes
  • Renderers
  Then recreate the chart.
• You can click the Run button several times: you may notice that the creation time will decrease. This is due to the Java VM just-in-time compiler optimizing more and more code.
• Use the Help menu item for more explanation.

How to Run the Sample as an Application

This sample can be run as an application. The installation directory contains a JAR file gantt-bench.jar. Do not double-click on this JAR file to start the demo, because it needs extra arguments passed to the Java virtual machine.

Instead, you can run the sample application from the command line. First check that the Ant utility is properly configured. If not, see the instructions on how to configure Ant for Perforce JViews.

Then, go to the installation directory of the sample and type:

ant run

Topics Covered

• Performance of the Gantt chart component.

Detailed Description

This sample shows the performance of the Gantt chart component when Gantt charts or Schedule charts of various sizes and that use various graphic features are created or displayed.
Before creating your charts you can control the following parameters:

• How the data model is created (in-memory or read from an XML file).
• The number of objects created in the data model.
• The initial objects for the data model.
• When the data model is attached to the component.
• The renderers used for the graphic objects.

Installation Directory

The Benchmarking Gantt Charts sample is installed here.

Source Files

• bench.GanttBenchExample

  The main class of the sample.