Re: Aggressive memory consumption in {ts,array}_typanalyze
От | Robert Haas |
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Тема | Re: Aggressive memory consumption in {ts,array}_typanalyze |
Дата | |
Msg-id | CA+Tgmobt2Zq-7mEN9WWzWDoOM1CyOC=FKXUV7aeEi47+5TQWFg@mail.gmail.com обсуждение исходный текст |
Ответ на | Aggressive memory consumption in {ts,array}_typanalyze (Noah Misch <noah@leadboat.com>) |
Ответы |
Re: Aggressive memory consumption in {ts,array}_typanalyze
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Список | pgsql-hackers |
On Mon, Apr 16, 2012 at 4:58 PM, Noah Misch <noah@leadboat.com> wrote: > The size hint I chose is fairly arbitrary. Any suggestions for principled > alternatives? Based on your test results, it doesn't seem like it matters very much what you put in there, so I'm inclined to think that num_mcelem is fine. I thought about maybe allowing for a little slop, like num_mcelem * 10, but maybe the way you did it is better. It's possible that people will set ridiculously overblown stats targets on some columns, and that's certainly going to cost something no matter what we do, but there's no point in making that worse than it has to be without some clear reason for doing so. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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