On the Controller

Make sure you're using the 64-bit version of any software (load engine or controller, Windows or Linux).

If you're launching Amazon instances from inside Load Tester, and the instances are running out of memory, the simplest option is almost always to launch more load engines.

On a 32-bit Windows controller:

  1. Locate the file "webperformance.ini" in the directory where you installed the program.
  2. Create a backup copy of the file. You may need to copy the file out-and-back-into the install directory, due to file permissions.
  3. Edit the file with a plain-text editor and locate the lines:


  4. Change the "300" in each line to the desired amount (in MB) of memory to use, and save the file. On 32-bit machines I don't recommend trying to exceed about 800 MB for this setting.

On a 32-bit Windows Load Engine:

  1. Right click on the LoadEngine.cmd file to edit the file in your favorite text editor.
  2. Edit the options: "-Xms200m -Xmx200m", which work exactly as described in the section above.