Want to Stress Test Website with 10,000+ Users? Use WAPT Pro x64 Load Engine

In the previous article about WAPT, we discussed how WAPT Pro performance testing tool can be used for website performance testing. But, if you want to generate much higher load on the website then you must use the x64 Load Engine release from WAPT team. This article and ultimately the testing tool is very useful for performance testers.

This is in fact very crucial for testing time-critical applications such as stock management systems which get refreshed every minute and create a huge load on the website as there are thousands of users accessing the website at the same moment. For such applications, stress testing with more than 10,000 users is a basic test requirement.

The WAPT Pro comes with default “Load Agents” functionality to test average load on any website. But, for a high capacity test with more than 10,000 users, we can now leverage the power of x64 Load Engine extension. Each x64 powerful load engine is capable of creating 10k to 50k virtual users depending upon the test options and hardware. This is around 5 times higher than the capacity of a regular load agent.

x64 Load Engine is similar to Load Agents feature on WAPT Pro installation. The main difference is in the ability of load engine to generate huge load using 64 bit Windows systems. Using one 64-bit server, you can dramatically increase the load testing capacity on the website under test. The x64 Load Engine can be configured in such a way that using slightly high-end hardware you can easily generate more than 100k virtual users’ load on the website.

Assume that you want to stress test your website with 100,000 concurrent virtual users. You can achieve this using 4 servers each with 25,000 virtual users. Setup this load engine on 4 systems and use them concurrently to achieve desired website load. This powerful x64 Load Engine effectively utilizes the available memory resources on 64-bit system architecture.

WAPT Pro x64 Load Engine Installation:

– You can install x64 Load Engine on a 64-bit version of Windows XP/2003/Vista/2008/Win7 OS.

– x64 Load Engine works best on following hardware configuration:

Core i5/Phenom or CPU better than this, 8+ GB RAM and Gigabit Ethernet

The link provided below specifies the usage/application, installation and the licensing details of x64 Load Engine:

x64 Load Engine: Execute high capacity load tests with 10’000+ virtual users

How to install:

x64 Load Engine is a WAPT Pro extension so it runs on WAPT Pro tool similar to Load Agents. To use this load engine, you must have WAPT Pro installed first.

You can download and install x64 Load Engine from below mentioned link. After installation, you can start using load engine using the WAPT pro-workplace itself.

Download WAPT Pro x64 Engine.

The above link also enlists Wapt Pro x64 features, operating system requirements, recommended hardware configuration, way to install & uninstall and licensing policy.

x64 Load Engine Pros:

– You can generate almost unlimited virtual users (test load) on Windows 64 system.

– Offers JavaScript supported server response processing.

– Easy to install, learn and configure

Check out below screenshot to know the simplicity of x64 Load Engine Manager:

– No restrictions on the size of used virtual memory

x64 Load Engine Cons:

– No evaluation period available

– Works with WAPT Pro only


X64 Load Engine extension costs around $900 plus some additional charges. You can visit below link hosted by WAPT that provides pricing details: Load testing tool


As said earlier in my comment, this tool is very useful for performance, stress & load testers. Other testers can get a glimpse of the performance testing scope which is very interesting to work on!

The pricing of the tool is also justifiable if we see it in the light of extraordinary features and testing support it provides.

Useful Reading: The Beginner’s Guide to Web Application Performance Testing using WAPT Pro

Please ask your queries in below comment section. Your feedback is always appreciated!