Re: For index bloat: VACUUM ANALYZE vs REINDEX/CLUSTER
От | Richard Broersma Jr |
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Тема | Re: For index bloat: VACUUM ANALYZE vs REINDEX/CLUSTER |
Дата | |
Msg-id | 162380.54690.qm@web31806.mail.mud.yahoo.com обсуждение исходный текст |
Ответ на | Re: For index bloat: VACUUM ANALYZE vs REINDEX/CLUSTER (Erik Jones <erik@myemma.com>) |
Ответы |
Re: For index bloat: VACUUM ANALYZE vs REINDEX/CLUSTER
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Список | pgsql-general |
> Not quite. Once a page has reached it's fill factor percentage full, > no more inserts will happen on that page, only updates. Also, I > think you have large/small backwards wrt fill factor. If you have a > fill factor of, say, 40% then once a page has reached 40% full no > more inserts will happen (unless some space is reclaimed by vacuum). > So, smaller fill factors == bigger holes. The bigger the fill > factor, the smaller the whole: if you have a fill factor of 90%, > only 10% is reserved for updates of rows on that page. So (just to reiterate), fill factor can be applied to both a table and/or an index(es). But the "holes" built into the page of a table or index can only be filled by UPDATE Statements. Thanks for the clarification! Regards, Richard Broesma Jr.
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