Re: pgbench - allow to specify scale as a size

> Now the overhead is really 60-65%. Although the specification is unambiguous, 
> but we still need some maths to know whether it fits in buffers or memory... 
> The point of Karel regression is to take this into account.
>
> Also, whether this option would be more admissible to Tom is still an open 
> question. Tom?

Here is a version with this approach: the documentation talks about 
"actual data size, without overheads", and points out that storage 
overheads are typically an additional 65%.

-- 
Fabien.