On Tue, Dec 13, 2022 at 07:20:14PM -0500, Tom Lane wrote:
> I certainly don't think that "wake the apply launcher every 1ms"
> is a sane configuration. Unless I'm missing something basic about
> its responsibilities, it should seldom need to wake at all in
> normal operation.
This parameter appears to control how often the apply launcher starts new
workers. If it starts new workers in a loop iteration, it updates its
last_start_time variable, and it won't start any more workers until another
wal_retrieve_retry_interval has elapsed. If no new workers need to be
started, it only wakes up every 3 minutes.
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com