| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Jan Wieck <JanWieck(at)Yahoo(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>, Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, "Ross J(dot) Reedstrom" <reedstrm(at)rice(dot)edu> |
| Subject: | Re: Big 7.1 open items |
| Date: | 2000-06-16 16:35:07 |
| Message-ID: | 200006161635.MAA00719@candle.pha.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
> There are also disadvantages.
>
> You can run out of space even if there are plenty GB's
> free on your disks. You have to create tablespaces
> explicitly.
>
> If you've choosen inadequate extent size parameters, you
> end up with high fragmented tables (slowing down) or get
> stuck with running against maxextents, where only a reorg
> (export/import) helps.
Also, Tom Lane pointed out to me that file system read-ahead does not
help if your table is spread around in tablespaces.
--
Bruce Momjian | http://www.op.net/~candle
pgman(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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