| From: | Satoshi Nagayasu <nagayasus(at)nttdata(dot)co(dot)jp> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | josh(at)agliodbs(dot)com, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Open items |
| Date: | 2005-06-30 14:02:38 |
| Message-ID: | 42C3FB7E.1030205@nttdata.co.jp |
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| Lists: | pgsql-hackers pgsql-patches |
> The TODO item is about counting all temporary files, not sorts in
> particular. Or at least that's what I thought it meant.
If the DBA have to improve the performance,
DBA will need to know about:
- Which SQL generate a disk sort?
- Size of sorts.
- Changing 'work_mem' value can reduce disk sorts?
So, sometime DBA want to know about 'sorts', not temp files.
However, I understand DBA must also care about temp files usage.
I think both are required.
DBA need to know about 'sorts' and 'temp files'.
--
NAGAYASU Satoshi <nagayasus(at)nttdata(dot)co(dot)jp>
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