Few days ago I decided to have closer look at my multi-threaded experiments, mainly to check if there really is any kind of difference between code based on locks and lock-free version. Downloaded evaluation version of Intel Thread Profiler and gave it a try. Especially for this experiment, I modified scenario a little bit. Mandelbrot is not the best test as tasks take relatively long time (with selected number of iterations one ‘frame’ would take over 2 seconds).