Re: reindex/vacuum locking/performance?

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От Andrew Sullivan
Тема Re: reindex/vacuum locking/performance?
Дата
Msg-id 20031005143431.GC3441@libertyrms.info
обсуждение исходный текст
Ответ на Re: reindex/vacuum locking/performance?  ("Matt Clark" <matt@ymogen.net>)
Ответы Re: reindex/vacuum locking/performance?  ("Matt Clark" <matt@ymogen.net>)
Список pgsql-performance
On Sun, Oct 05, 2003 at 12:14:24PM +0100, Matt Clark wrote:
> more info on how it clobbers shared_buffers?

Vacuum is like a seqscan.  It touches everything on a table.  So it
doesn't clobber them, but that's the latest data.  It's unlikely your
buffers are big enough to hold your database, unless your database is
small.  So you'll end up expiring potentially useful data in the
buffer.

A

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