On Mon, 2022-11-07 at 12:12 +0000, Karthik Jagadish (kjagadis) wrote:
> I have follow-up question where the vacuum process is waiting and not doing it’s job.
> When we grep on waiting process we see below output. Whenever we see this we notice
> that the vacuum is not happening and the system is running out of space.
>
> [root@zpah0031 ~]# ps -ef | grep 'waiting'
> postgres 8833 62646 0 Jul28 ? 00:00:00 postgres: postgres cgms [local] VACUUM waiting
> postgres 18437 62646 0 Jul27 ? 00:00:00 postgres: postgres cgms [local] VACUUM waiting
>
>
> What could be the reason as to why the vacuum is not happening? Is it because some lock is
> present in the table/db or any other reason?
Look in "pg_stat_activity". I didn't check, but I'm sure it's the intentional break
configured with "autovacuum_vacuum_cost_delay". Reduce that parameter for more
autovacuum speed.
Yours,
Laurenz Albe