| From: | "Josh Berkus" <josh(at)agliodbs(dot)com> |
|---|---|
| To: | "Henrik Steffen" <steffen(at)city-map(dot)de>, <shridhar_daithankar(at)persistent(dot)co(dot)in> |
| Cc: | <pgsql-general(at)postgresql(dot)org>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: [PERFORM] Upgrade to dual processor machine? |
| Date: | 2002-11-14 20:57:42 |
| Message-ID: | web-1826284@davinci.ethosmedia.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general pgsql-performance |
Henrik,
> do you seriously think that I should vacuum frequently
> updated/inserted
> tables every 120 seconds ?
>
> This is what it says in the manual and what I have been doing until
> today:
>
> "You should run VACUUM periodically to clean out expired rows. For
> tables that are heavily modified, it is useful to run VACUUM
> every night in an automated manner. For tables with few
> modifications, VACUUM should be run less frequently. The command
> exclusively
> locks the table while processing. "
>
> And:
>
> "You should run VACUUM ANALYZE when a table is initially loaded and
> when a table's data changes dramatically. "
That's the postgres *7.1* manual you're reading. You need to read the
7.2 online manual; VACUUM has changed substantially.
-Josh Berkus
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