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I have to perform load test on a desktop application. So, I used visual studio to test load on web server with 100 users then it worked fine & got no error.
But in real time, I got different behavior on the client side when we do the same activity manually while 100 real users are working together & using that application simultaneously. Client side application is getting crashed/hang or getting UI error due to slowness.
Which tool should I use to test load on both server & client side?
I always have used JMeter for Performance Testing. On this question, I think watching this tutorial may help you for client-side performance testing:
https://www.thoughtworks.com/insights/blog/client-side-performance-testing-tutorial
Mirco Focus has got two load testing tools that support client-side (web) load testing: Loadrunner and Silk Performer. Those tools are not cheap and performing load testing this way also requires a lot more load generators.
Another option would be NeoLoad, that works on protocol level, but you can use a Selenium client-side test during a load test to measure client-side response times.
A third option would be to use a separate website client-side automated test script that is enriched with measuring of some actions. That that can be run during a load test in another tool.
I would go for the following combination:
The reason of not suggesting Coded UI Tests is that Visual Studio 2019 is the latest version to support them (same for Load Testing Framework, Microsoft recommends switching to Apache JMeter for load testing)
