Hi, On Tue, Jun 11, 2024 at 11:40:36AM -0500, Nathan Bossart wrote: > On Tue, Jun 11, 2024 at 07:25:11AM +0000, Bertrand Drouvot wrote: > > So I think that in v2 we could: 1) measure the actual wait time instead, 2) > > count the number of times the vacuum slept. We could also 3) reports the > > effective cost limit (as proposed by Nathan up-thread) (I think that 3) > > could > > be misleading but I'll yield to majority opinion if people think it's not). > > I still think the effective cost limit would be useful, if for no other > reason than to help reinforce that it is distributed among the autovacuum > workers.
I also think it can be useful, my concern is more to put this information in pg_stat_progress_vacuum. What about Sawada-san proposal in [1]? (we could create a new view that would contain those data: per-worker dobalance, cost_lmit, cost_delay, active, and failsafe). [1]: https://www.postgresql.org/message-id/CAD21AoDOu%3DDZcC%2BPemYmCNGSwbgL1s-5OZkZ1Spd5pSxofWNCw%40mail.gmail.com Regards, -- Bertrand Drouvot PostgreSQL Contributors Team RDS Open Source Databases Amazon Web Services: https://aws.amazon.com
