Re: pgbench stats per script & other stuff

Hello Alvaro,

> I'm looking at this part of your patch and I think it's far too big to
> be a simple refactoring. Would you split it up please?

You know how delighted I am to split patches...

Here is a 5 part ordered patch serie:

a) add -b option for cumulating builtins and rework internal script
    management so that builtin and external scripts are managed the
    same way.

b) refactor statistics collections (per thread, per command, per whatever)
    so as to use the same structure everywhere, reducing the CLOC by 115.
    this enables the next small patch which can reuse the new functions.

c) add per-script statistics... because Josh asked:-)

d) add optional weight to control the relative frequency of scripts.

e) minor code cleanup :
    use bool instead of int where appropriate
    put together struct fields when they belong together
    move 2 options at their right position in the list

This patch serie conflicts slightly with the "add functions to pgbench" 
patch which is marked as ready in the CF. The first to make it will mean 
some conflict resolution for the other. Maybe I would prefer this one 
serie to go first, if I had any say...

-- 
Fabien.