Re: [HACKERS] Re: [PORTS] vacuum takes too long

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: scrappy(at)hub(dot)org (The Hermit Hacker)
Cc: dave(at)turbocat(dot)de, ports(at)postgreSQL(dot)org, hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Re: [PORTS] vacuum takes too long
Date: 1999-01-07 02:36:31
Message-ID: 199901070236.VAA26204@candle.pha.pa.us
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> Start at the top of the table, go to the first 'blank' section (a deleted
> record)...find the next good record that will fit in the space, move it
> there...clear out the old space, etc...
>
> if dba issues a 'vacuum', lock the table and do all records at once, but
> otherwise try and vacuum the table live...
>
> With the new MVCC serialization, this concept should be less intrusive on
> readers, no?

Wish I knew the answer. I can guess, but that isn't going to help.

--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026

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