With hundreds of Java performance tests available online, you sometimes get confused as to which one you should use. Often, these codes and tests do not undergo quality check, which can sometimes lead to an unsuccessful performance testing.
Close Other Applications
One of the most important parts of performance testing is closing all other applications aside from the system that you are using.
Whether those are media players, RSS-feed readers, or word processors, it can still hinder your performance test from being successful, so make sure to close these first. Besides, you want the system to be able to use all available resources on your computer.
You want to use a dedicated testing system. Also, you might want to make sure that the operating system is installed as clean as possible, and that you install a minimal amount of tools.
When it comes to performance testing, once is never enough. Repeat your tests and when you see an average result, and then use that. If you see that the results are very different, then you are doing something wrong.
Memory and Space
Most codes and tests use a great amount of computer memory. Make sure that you have freed a huge chunk of memory before proceeding to get rid of any problem.
If the system or code that you are using is CPU intensive, then you have to see and determine which test makes use of your CPU the most.
If the test or application is neither CPU nor memory intensive, then try thread-locking instead. It might also be dependent on your external systems such as your database servers and network connection.