Re: Experimental patch for inter-page delay in VACUUM
От | Jan Wieck |
---|---|
Тема | Re: Experimental patch for inter-page delay in VACUUM |
Дата | |
Msg-id | 3FA667CD.8080000@Yahoo.com обсуждение исходный текст |
Ответ на | Re: Experimental patch for inter-page delay in VACUUM (Christopher Browne <cbbrowne@acm.org>) |
Список | pgsql-hackers |
Christopher Browne wrote: > The world rejoiced as hannu@tm.ee (Hannu Krosing) wrote: >> Christopher Browne kirjutas E, 03.11.2003 kell 02:15: >>> Well, actually, the case where it _would_ be troublesome would be >>> where there was a combination of huge tables needing vacuuming and >>> smaller ones that are _heavily_ updated (e.g. - account balances), >>> where pg_autovacuum might take so long on some big tables that it >>> wouldn't get to the smaller ones often enough. >> >> Can't one just run a _separate_ VACUUM on those smaller tables ? > > Yes, but that defeats the purpose of having a daemon that tries to > manage this all for you. It only shows where the daemon has potential for improvement. If it knows approximately the table sizes, it can manage a separate "passing" lane for the fast and high frequent commuters. Jan -- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #================================================== JanWieck@Yahoo.com #
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