There are a few different ways of running a Gatling performance test on your machine. One of them is through one of the available through Gradle plugins, which provide support for running tests during the building of a project. You may also use Maven plugins or just try to run it from your IDE. If you build your project with Gradle, you can also define simple tasks that just run tests by launching the io.gatling.app.Gatling main class. Here's a definition of such a task in the gradle.build file:
task loadTest(type: JavaExec) { dependsOn testClasses description = "Load Test With Gatling" group = "Load Test" classpath = sourceSets.test.runtimeClasspath jvmArgs = [ "-Dgatling.core.directory.binaries=${sourceSets.test.output.classesDir.toString()}" ...
