How to Stress Test WordPress Blogs

How to Stress Test WordPress Blogs

Now, more and more WordPress users decide to carry out the stress testing on their websites to better know how fast their sites are growing. To put it simply, the stress testing can happen when you put a certain level of stress on your WordPress site so as to test how well it runs online. For instance, you can test out how your website loads during the normal hours and during the peak traffic hours. In the following, we’d like to tell you how to stress test WordPress blogs.

Test Your Current Website Performance

To begin with, you should firstly evaluate the current performance of your WordPress site before throwing everything at one time. For this, there are a lot of tools you can use, such as Pingdom, Uptime Robot, PageSpeed Insights and GTMetrix. These tools can ensure a good starting point for you to carry out the true stress tests.

When testing the current performance, you’d better keep the monitoring for at least one week and take the average statistics. And then, you should record the exact time when getting the most and the least traffic.

Figure Out the Improper Plugins

It is possible that some of your installed plugins will affect the performance of your WordPress site. In this case, you have to test out your website to find them. Here, you can use the P3 Plugin Performance Profiler plugin. This tool can create a profile for the performance of your website plugins after measuring their impact on your page loading speed. If your website runs slowly due to some poorly configured plugins, this plugin can find them quickly.

After the installation, you should click the Tools > P3 Plugin Profiler button. And then, you simply need to click the Scan button to monitor the performance of your website on the server.

Start Scan

Then, this plugin will show you the results chart of the runtime for each of your installed plugin.

P3 Plugin Performance Profiler Results

Based on the results, you can do something to better improve your website performance. For instance, you can delete the unnecessary plugins and replace ones that take the long plugin loading time or ones that impact your loading speed the most.

Prepare for Your Back-End Stack

This is step is a little bit complicated, so we recommend you to ask for the help from some advanced WordPress users or developers.

For this aspect, you’d better cover the following key points to make sure that your website back-end is ready for the stress testing.

  • You need to make sure that your back-end stack is tuned properly. The aspects of Apache optimization and MySQL running are especially important.
  • You’d better document the setup and specifications of your web server, from the PHP version to the operating system.
  • Before starting the stress testing, you can put your website into the staging environment.

Start the Stress Testing Manually

Personally speaking, if you are a newbie, you’d better avoid the free manual method. However, if you think you are experienced enough, you can consider the utilization of the following two tools.

  • JMeter – This is an open source Java application for stress testing your website. With it, you can test out the servers, most major applications and protocol types. In addition, it can handle the LAMP setup perfectly, coming with some extensible tools like visualization plugins and scritable samplers.
  • Siege – This tool is easier to use than JMeter, which is suitable for the less experienced users. Its benchmarking and testing utility can simulate users and can put the web servers under siege.

Note that both of these two tools have a lot of online documentation, with which you can learn how to start the testing with your technical knowledge.

Make Use of the Load Impact Platform

If you feel the manual method is too complicated and time-consuming, we recommend you to use the commercial solution like Load Impact. This tool has multiple monthly plans so that you can choose one based on your budgets.

With its user-friendly interface, you can test everything on your WordPress site. With the realistic and simulated users, you can get the idea of what people will do on your site.

Create the User Scenario

Before the testing, you can create a user scenario, which is a script defining the special requests made by the simulated users when loading the test. For this, you can click the User Scenario > Create New User Scenario button from the admin panel.

Create the User Scenario

After that, you can choose how your want to generate this special scenario among four options.

Create the Test

Next, you can click the Create New Test button to generate the stress testing. And then, you should add the scenario you have created previously.

Create the Test

Note that you can add up to 10 user scenarios into a single stress testing. And the testing results look like the following. Here, you can choose the loading zone based on your real situation. In addition, you can modify the UV load level to determine the number of users you are looking to simulate, along with the proper testing duration.

Testing Result

This way, you can reach to the maximum limit to figure out how many users and traffic your website can handle the most on the monthly basis.