Some additional benchmarking printout: [1 tinyBenchmarks ] timeToRun squeak VM: 5240 5235 5243 5249 Hydra VM (before refactoring) 5797 5797 5937 5938 Hydra VM (after refactoring) 5688 5703 5703 So, there is definitely a speed boost with new changes! -- Best regards, Igor Stasenko AKA sig.