Hi,
On 2023-05-09 13:38:24 -0700, Jeff Davis wrote:
> On Tue, 2023-05-09 at 12:02 -0700, Andres Freund wrote:
> > I don't think the approach of not having any sort of "registry" of
> > whether
> > anybody is waiting for the replay position to be updated is
> > feasible. Iterating over all walsenders slots is just too expensive -
>
> Would it work to use a shared counter for the waiters (or, two
> counters, one for physical and one for logical), and just early exit if
> the count is zero?
That doesn't really fix the problem - once you have a single walsender
connected, performance is bad again.
Greetings,
Andres Freund
