Re: Why so slow? - Mailing list pgsql-performance

From Markus Schaber
Subject Re: Why so slow?
Date
Msg-id 445793DC.40401@logix-tt.com
Whole thread Raw
In response to Re: Why so slow?  (Bill Moran <wmoran@collaborativefusion.com>)
List pgsql-performance
Hi, Bill,

Bill Moran wrote:

> My understanding is basically that if you vacuum with the correct
> frequency, you'll never need to vacuum full.  This is why the
> autovacuum system is so nice, it adjusts the frequency of vacuum according
> to how much use the DB is getting.

Additonally, the "free_space_map" setting has to be high enough, it has
to cover enough space to put in all pages that get dead rows between two
vacuum runs.

HTH,
Markus


--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org

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