Re: pgsql: Consolidate docs for vacuum-related GUCs in new subsection

On 2025-Jan-13, Melanie Plageman wrote:

> I've gone with VACUUM_AUTOVACUUM, VACUUM_COST_DELAY, and
> VACUUM_FREEZING, but I am open to feedback.

Looks good to me. I checked these two queries, whose results appear
correct:

55432 18devel 560655=# select name, category from pg_settings where category ilike '%vacuum%';
name │ category
───────────────────────────────────────┼─────────────────────────────────────
autovacuum │ Vacuuming / Automatic Vacuuming
autovacuum_analyze_scale_factor │ Vacuuming / Automatic Vacuuming
autovacuum_analyze_threshold │ Vacuuming / Automatic Vacuuming
autovacuum_freeze_max_age │ Vacuuming / Automatic Vacuuming
autovacuum_max_workers │ Vacuuming / Automatic Vacuuming
autovacuum_multixact_freeze_max_age │ Vacuuming / Automatic Vacuuming
autovacuum_naptime │ Vacuuming / Automatic Vacuuming
autovacuum_vacuum_cost_delay │ Vacuuming / Automatic Vacuuming
autovacuum_vacuum_cost_limit │ Vacuuming / Automatic Vacuuming
autovacuum_vacuum_insert_scale_factor │ Vacuuming / Automatic Vacuuming
autovacuum_vacuum_insert_threshold │ Vacuuming / Automatic Vacuuming
autovacuum_vacuum_scale_factor │ Vacuuming / Automatic Vacuuming
autovacuum_vacuum_threshold │ Vacuuming / Automatic Vacuuming
autovacuum_worker_slots │ Vacuuming / Automatic Vacuuming
vacuum_cost_delay │ Vacuuming / Cost-Based Vacuum Delay
vacuum_cost_limit │ Vacuuming / Cost-Based Vacuum Delay
vacuum_cost_page_dirty │ Vacuuming / Cost-Based Vacuum Delay
vacuum_cost_page_hit │ Vacuuming / Cost-Based Vacuum Delay
vacuum_cost_page_miss │ Vacuuming / Cost-Based Vacuum Delay
vacuum_failsafe_age │ Vacuuming / Freezing
vacuum_freeze_min_age │ Vacuuming / Freezing
vacuum_freeze_table_age │ Vacuuming / Freezing
vacuum_multixact_failsafe_age │ Vacuuming / Freezing
vacuum_multixact_freeze_min_age │ Vacuuming / Freezing
vacuum_multixact_freeze_table_age │ Vacuuming / Freezing

55432 18devel 560655=# select name, category from pg_settings where (short_desc ilike '%vacuum%' or extra_desc ilike '%vacuum%') and category not ilike '%vacuum%';
name │ category
─────────────────────────────┼─────────────────────────────────────
autovacuum_work_mem │ Resource Usage / Memory
log_autovacuum_min_duration │ Reporting and Logging / What to Log
maintenance_work_mem │ Resource Usage / Memory
vacuum_buffer_usage_limit │ Resource Usage / Memory

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