MapAsTuple faster than hana.map, but significant differences in graph over time

[cppljevans]

The two attached screen shots show:

https://github.com/cppljevans/composite_storage/blob/master/benchmark/src/CMakeLists.txt

but without the large time of the hana.make_find dataset (it's largeness largely obscured details
of other datasets). The 2 screen shots show the result of the same test run a few minutes
apart. What the 2 screen shots show is that the MapAsTuple method invariably and
significantly runs faster than the hane.map method. The two screen shots show there's
also significant variation in the shape of curves, indicating noise, I guess.

IIRC, one of your pages lamented how hana map was slow, and hopefully this
will give some clue about how to fix that.

-regards,
Larry

Run at 18:56

Run at 19:06