| From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "Steven M(dot) Wheeler" <swheeler(at)sabre(dot)com>, pgsql-sql(at)hub(dot)org |
| Subject: | Re: [SQL] Questions about vacuum analyze |
| Date: | 1999-10-11 16:14:28 |
| Message-ID: | 199910111614.MAA03460@candle.pha.pa.us |
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| Lists: | pgsql-sql |
> Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> writes:
> > The thing I liked about the existing algorithm is that it did the
> > sorting without the page faulting/thrashing caused by many sort
> > algorithms.
>
> Yes, I think we want to stick with the basic architecture of an
> initial replacement-selection filter operating in limited memory,
> followed by merge passes. I'm just thinking about how to reduce
> the amount of disk space chewed up by intermediate merge results...
Wonder how our create index does it. Seems it is must be similar.
--
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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