In my experience, SSD utilization for some architectures shows up as CPU in eg top. YMMV.
Would love to, but I need to sit down with v0.7 again at some point since many of my benchmarks got an amazing speedup, while others got a horrible slowdown (I guess not because of core language issues, but because deprecation warnings?). I plan to re-benchmark when it is frozen and packages catch up a bit.