This topic explains how to run existing load tests from the command line interface. In this section:

Running Load Tests

You can run existing load test (.lt) files from the Load Test command line interface. The Load Test command line runs a script that specifies which .lt files to open and how to run the test. Invoke the script whenever you want to run the tests. 

Creating the Script

Create a plain text file with UTF-8 character encoding and add the commands to run your load test. Your system may create text files using another character encoding standard. If you experience issues running your script, verify that the correct encoding is used. Write your script in the following format:

open <PATH-TO-LT-FILE>
loadtest <OPTIONS> <SCENARIO-NAME>

The loadtest command runs a test suite load test using the specified scenario. Refer to the Load Test Command Reference for details about the available loadtest command options.

Using Variables

You can declare variables that you want to use in the script using the following syntax:

var VariableName1 = VariableValue
var VariableName2 = "Variable Value with Spaces"

You can reassign variables that have been declared earlier in the script:

var VariableName1 = NewVariableValue

Sample Script

Here is a sample script (comments in the script are preceded with a "#" sign):

#
# Using script commands
#
 
var report-home = C:\CONTINUOUS_LOAD_TEST\ENTERPRISE_LOAD_TEST 
var minutes = 1
 
var scenario = "Steady Load"
var base = tests/loadtester/accuracytest/tests 
var category = Accuracy
 
var test-name = 1-Profile-HPS
open ${base}/${test-name}.lt
loadtest -minutes ${minutes} -allReports ${report-home}/%d/${category}/${test-name} ${scenario}

Running the Script

Invoke Load Test from the command line to run the script:

lt.exe -cmd -run <PATH_TO_YOUR_SCRIPT> // WINDOWS 
./loadtest -cmd -run <PATH_TO_YOUR_SCRIPT> // Linux and macOS

The -cmd argument starts Load Test in command line mode. The -run argument executes the specified Load Test script. Both arguments are required to run a script from the command line.

lt.exe -cmd -run <PATH_TO_YOUR_SCRIPT> // WINDOWS 
./loadtest -cmd -run <PATH_TO_YOUR_SCRIPT> // Linux and macOS

Requesting a License Dynamically

When you run Load Test in command line mode, Load Test uses the license configured in the GUI mode by default. You can also dynamically request a license from a Parasoft License Server with the -licenseserver option. Specify the host and port of the License Server and use the -licenseVus option to specify the number of virtual users allowed by the license.

lt.exe -cmd -run <PATH_TO_YOUR_SCRIPT> -licenseserver <HOST>:<PORT> -licenseVus <INTEGER> // WINDOWS 
./loadtest -cmd -run <PATH_TO_YOUR_SCRIPT> -licenseserver <HOST>:<PORT> -licenseVus <INTEGER> // Linux and macOS

Examples

-licenseserver LicenseServerHost:2002 -licenseVus 100 // Requests a 100-VU Load Test license
-licenseserver LicenseServerHost:2002 -licenseVus Unlimited // Requests an Unlimited VU Load Test license 
-licenseserver LicenseServerHost:2002 // Requests basic 5-VU Load Test license

Running Load Test on Remote Machines

You can run load tests on a remote machine from the command line by starting the remote instance of Load Test in server mode and running a project with the local instance of Load Test that is configured to run the tests on the remote server.

Starting Load Test in Server Mode

Use the -loadtestserver flag and specify the port number to enable the Load Test to run remotely. The port number is the local machines's port on which the server is listening.  

lt -loadtestserver <PORT> // WINDOWS
./loadtest -loadtestserver <PORT> // Linux and macOS

Configuring a Remote Project

See Running Load Tests on Remote Machines for instructions.

Working with Load Test Machines Located on Different Networks

The machine that runs in GUI mode and provides the interface for controling the load test is the Load Test controller machine. The controller can communicate with a Load Test server machine located on a different network if the network equipment that bridges these networks allows communication on the port that the Load Test server machine is listening on.

For example, if you run your Load Test controller on network A and your Load Test server is started on port 10095 by an lt -loadtestserver 10095 command on network B, the communication on port 10095 between networks A and B must not restricted by your network equipment. Allow any TCP traffic exchange for that port. Talk to your system or network administrator about the network configuration issues.

Load Test Command Reference

The following commands allow you to start the Load Test Server and run load tests:

Load Test Command Line Options

Use these commands in either the Windows Command Prompt or a Linux shell.

Load Test Script Commands

*Load Test report data is collected and saved in approximately 3 second intervals. The trimReport…

commands will discard all report collection points that fall into the specified trim intervals. Because the times of the report collection points and the specified trim values may not match, the actual duration trimmed from the beginning and end of the report may (and in most cases will) exceed the duration specified in the command line. The excess value trimmed from the head and the tail of the report will not exceed the duration of the data collection interval. For more details on how report fragments are saved, see Understanding Report Interval Selection.

Local Settings Files

Local settings files can control various Load Test options. You can create different local settings files for different projects, then use the -localSettings script option to indicate which file should be used for the current command line test.

If a parameter is specified in this file, it will override the related parameter specified in the Load Test preferences. If a parameter is not specified in this file, Load Test will use the parameter specified in the preferences. If there is no relevant parameter in the Load Test preferences, a default value setting will be used.

If you want to use a default setting, remove or comment out the setting from the file. The file contains name/value pairs and uses the following format:

nameString=valueString

Each name/value pair must be on a separate line. Use the hash “#” symbol to comment the name/value entries.

Sample

A sample local settings file may contain:

# This is a commment 
echo=false
team.server.host=localhost 
team.server.port=18888 
team.server.user=
team.server.password=

Available Settings

Console Logging

Console logging provides load test status information in command line mode as the tests are running. When console logging is enabled (see the console.log=enable local setting), the application prints the main load test run time parameters in the console. Load test status is printed in one line every 30 seconds. It contains the following information:

• System Time
• Percent complete
• Run time seconds completed/total
• Total tests passed/failed
• Average Virtual User count since last log
• Average Hit Per Second rate since last log

Example:

2011.04.21 17:54:56 MDT | 53% complete | 32/60 seconds | passed 245/failed 0 | avg. VUs 4 |avg. HPS 8