this is a reasonable test: https://www.cs.virginia.edu/stream/ref.html https://www.cs.virginia.edu/stream/ref.html but it's pretty straightforward to just copy

this is a reasonable test: https://www.cs.virginia.edu/stream/ref.html https://www.cs.virginia.edu/stream/ref.html but it's pretty straightforward to just copy giant buffers in order/out of order and squint really hard at the results