Add --throttle to pgbench
Each client is throttled to the specified rate, which can be expressed in
tps or in time (s, ms, us). Throttling is achieved by scheduling
transactions along a Poisson-distribution.
This is an update of the previous proposal which fix a typo in the sgml
documentation.
The use case of the option is to be able to generate a continuous gentle
load for functional tests, eg in a practice session with students or for
testing features on a laptop.
--
Fabien.
