Re: Track the amount of time waiting due to cost_delay
От | Bertrand Drouvot |
---|---|
Тема | Re: Track the amount of time waiting due to cost_delay |
Дата | |
Msg-id | Zml9+u37iS7DFkJL@ip-10-97-1-34.eu-west-3.compute.internal обсуждение исходный текст |
Ответ на | Re: Track the amount of time waiting due to cost_delay (Nathan Bossart <nathandbossart@gmail.com>) |
Список | pgsql-hackers |
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
В списке pgsql-hackers по дате отправления: