>>I ran mandelbrot for 4000 cycles<< That reduced workload only runs the program for 1/10th the time of the workload shown on the benchmarks game website. Run

>>I ran mandelbrot for 4000 cycles<< That reduced workload only runs the program for 1/10th the time of the workload shown on the benchmarks game website. Run the program for N=16,000 and see that "JVM startup costs and JIT costs amount to nothing" even for these "short, synthetic benchmarks". (Incidentally, the "usual" cold start measurement shown on the website is the best of 6.)