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The amount of memory pg uses for vacuuming by default is super low. You can increase it and thus dramatically speed up vacuuming by doing something like: How to find current setting? sachi=# show maintenance_work_mem sachi-# ; maintenance_work_mem ---------------------- 64MB (1 row) sachi=# select name, setting, unit from pg_settings where name='maintenance_work_mem'; name | setting | unit ----------------------+---------+------ maintenance_work_mem | 65536 | kB (1 row) Specifies the maximum amount of memory (in kilobytes) to be used in maintenance operations, such as VACUUM or CREATE INDEX. Since only one of these operations can be executed at a time by a database session, and an installation normally doesn't have very many of them happening concurrently, it's safe to set this value significantly larger than work_mem. Larger settings may improve performance for vacuuming and for restoring database dumps. Set Classifications master session reload Now set the maintenance_work_mem to 512MB. sachi=# set maintenance_work_mem = 524288 The gadget spec URL could not be found | The gadget spec URL could not be found |
