On 2021-May-14, Tom Lane wrote:
> An idea I'd been toying with was to make invals probabilistic, that is
> there would be X% chance of an inval being forced at any particular
> opportunity. Then you could dial X up or down to make a tradeoff
> between speed and the extent of coverage you get from a single run.
> (Over time, you could expect pretty complete coverage even with X
> not very close to 1, I think.)
Maybe we could say that debug_invalidate_system_caches_always=2 means to
use the current behavior, and debug_invalidate_system_caches_always=1
uses some probabilistic rule?
--
Álvaro Herrera Valdivia, Chile