Re: Still recommending daily vacuum...
От | Michael Paesold |
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Тема | Re: Still recommending daily vacuum... |
Дата | |
Msg-id | 468C9E09.9090703@gmx.at обсуждение исходный текст |
Ответ на | Re: Still recommending daily vacuum... (Alvaro Herrera <alvherre@commandprompt.com>) |
Ответы |
Re: Still recommending daily vacuum...
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Список | pgsql-hackers |
Alvaro Herrera wrote: > So what you are proposing above amounts to setting scale factor = 0.05. > The threshold is unimportant -- in the case of a big table it matters > not if it's 0 or 1000, it will be almost irrelevant in calculations. In > the case of small tables, then the table will be vacuumed in almost > every iteration if the threshold is 0, which is fine because the table > is small anyway. So why not let the threshold be 0 and be done with it? For very small tables, setting a threshold of 0 could mean a vacuum after every single row update (or every other row). I think that is just burning cycles. What about a threshold of 10 or 50, to have at least some sanity limit? Even though the cost of vacuum of a small table is low, it is still not free, IMHO, no? Best Regards Michael Paesold
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