TruffleRuby on the Substrate VM - Kevin Menard's WeblogTest suites like this are generally hard on optimizing runtimes. They always start in a cold state, they run for a short period of time, and in the case of JVM-based languages they incur a high degree of overhead when spawning new processes. For this test suite, which has 2,121 specs and 3,824 assertions, TruffleRuby on the SVM is 6.6 times faster than TruffleRuby on the JVM, shaving almost a full
