
Using the Visualizers
File Visualizer
The file visualizer saves sampling data to a file of your choice. To use:
- Select the threadgroup you wish to configure
- Select the File Visualizer (Called "Write samples to a file" in the drop-down)
- Input the full path to a file - the file will be created if it doesn't exist
- Choose append mode (on/off), and verbosity (best to do verbose)
- Hit the open button
- Start sampling
- Stop sampling
- Hit the close button
- View the file in any text editor, or you can use JMeter's data analyzer to show a graph of the data (goto JMeter's Report menu-Analyze Data File-open the file)
The data saved in the file is a list of URL's followed by the number of milliseconds the response took.
Graphing Visualizer
The graphing visualizer displays every sample as a point on a graph, where the x-axis plots individual samples, and the y-axis measures time in milliseconds. As the graph accumulates points, JMeter draws an average line, and a standard deviation line.
Email Notification Visualizer
The email visualizer sends an email to one or more email addresses when a URL fails. It will also send email again if the URL begins working again. You can choose the subject lines that are used for each message.
Spline Curve Visualizer
Windowed graphing Visualizer
Scrolling Bars Visualizer
This visualizer shows samples as vertical columns, the height of which indicates how long the sample took. These vertical columns scroll by from right to left as more samples are taken.
Text Results Visualizer
This visualizer displays the text that was received back from the sample. After each sample is received, sampling stops to give you a chance to review the results, after which you can hit the "continue" key for the next sample. Use this visualizer to verify that JMeter is getting the results you expect. It is best used with just a single thread.
Copyright (c) 1999 The
Java Apache Project.
$Id: visualizers.html,v 1.1 2000/09/19 03:18:10 mstover Exp $
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