I just came around a tool called Gatling (http://gatling-tool.org/) to create load tests for web applications. I used to use JMeter for a long time, but JMeter has weaknesses that Gatling doesn‘t have. JMeter uses a synchronous request approach. That means for every request JMeter generates, an internal thread is raised and therefore blocked until a response is being received or a timeout happens. This results in resource blocking on the load injector. The maximum number of threads is limited within a JVM - dependent on the underlying infrastructure - and even if you are able to run a lot of parallel threads this will result in a high CPU and memory utilization. Although performance tweaking and scaling out to distributed testing might help in such a case, it makes testing more complex and error-prone. This behavior can result in distorted metrics. Think about a typical breakpoint load test. You want to determine, which is the maximum number of requests per second your tested syst