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类型: integer
默认: 0
最低限度: 0
最大: 100
单元: milliseconds (ms)
上下文: user
重新开始: false



建议 [EN]

Most of the time, you will want manual vacuum to execute without vacuum_delay, especially if you're using it as part of ETL. If for some reason you can't use autovacuum on an OLTP database, however, you may want to increase this to 20ms to decrease the impact vacuum has on currently running queries. Will cause vacuum to take up to twice as long to complete.