From: Bruce Momjian <maillist@candle.pha.pa.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Steven M. Wheeler <swheeler@sabre.com>
Cc: pgsql-sql@hub.org
Subject: Re: [SQL] Questions about vacuum analyze
Date: Mon, 11 Oct 1999 14:55:32 -0400 (EDT)
Message-ID: <199910111855.OAA27707@candle.pha.pa.us> (raw)
In-Reply-To: <8559.939667518@sss.pgh.pa.us>
> Bruce Momjian <maillist@candle.pha.pa.us> writes:
> > Wonder how our create index does it. Seems it is must be similar.
>
> CREATE INDEX (for btrees) is very similar, and really ought to share
> code. Someone apparently didn't want to figure out how to generalize
> psort.c to handle index tuples, though. The CREATE INDEX code is a
> little better for large amounts of data but a lot worse for small
> amounts --- AFAICT it doesn't take any shortcuts, even when everything
> fits in memory. (I'm sure you've noticed that CREATE INDEX hits the
> disk pretty hard even when the source table is empty :-(.)
>
> I'm planning to merge the two sets of code and keep the best features of
> both. I already have some first-draft code that allows them to work
> with >2gig data sets.
Great.
--
Bruce Momjian | http://www.op.net/~candle
maillist@candle.pha.pa.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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To: pgsql-sql@postgresql.org
Cc: maillist@candle.pha.pa.us, tgl@sss.pgh.pa.us, swheeler@sabre.com, pgsql-sql@hub.org
Subject: Re: [SQL] Questions about vacuum analyze
In-Reply-To: <199910111855.OAA27707@candle.pha.pa.us>
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