Re: Free Space Map thoughts
От | Simon Riggs |
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Тема | Re: Free Space Map thoughts |
Дата | |
Msg-id | 1194594640.4251.333.camel@ebony.site обсуждение исходный текст |
Ответ на | Re: Free Space Map thoughts (Gregory Stark <stark@enterprisedb.com>) |
Ответы |
Re: Free Space Map thoughts
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Список | pgsql-hackers |
On Thu, 2007-11-08 at 23:04 +0000, Gregory Stark wrote: > "Simon Riggs" <simon@2ndquadrant.com> writes: > > > The pages might well be in cache, so the file location might well be > > irrelevant from an I/O perspective. Maybe. The nth page solution allows > > the FSM block to be easily located without any FSM index, so might well > > be faster. Separate files mean more space and more fsyncs too. But even > > so, I'm not sure either way. > > I don't follow any of the logical leaps in this paragraph. I asked Heikki to explain why he felt the design should go a certain way, which he didn't do. That's the logical leap I'm worried about. I repeat: I'm not sure either way. -- Simon Riggs 2ndQuadrant http://www.2ndQuadrant.com
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