Hello Thomas,
> I prepared a draft revert patch for discussion, just in case it comes
> in handy.  This reverts "pgbench: Improve time logic.", but "pgbench:
> Synchronize client threads." remains (slightly rearranged).
I had a quick look.
I had forgotten that this patch also fixed the long-running brain-damaged 
tps computation that has been bothering me for years, so that one sane 
performance figure is now reported instead of two not-clear-to-interpret 
take-your-pick figures.
It would be a real loss if this user-facing fix is removed in the 
process:-(
-- 
Fabien.