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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 (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-ports
> 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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