Re: caching indexes and pages? - Mailing list pgsql-performance

From Thomas Finneid
Subject Re: caching indexes and pages?
Date
Msg-id 4978EC01.6080107@fcon.no
Whole thread Raw
In response to Re: caching indexes and pages?  (Thomas Markus <t.markus@proventis.net>)
Responses Re: caching indexes and pages?  (Kenneth Marshall <ktm@rice.edu>)
Re: caching indexes and pages?  (Craig Ringer <craig@postnewspapers.com.au>)
List pgsql-performance
Thomas Markus wrote:

> try to reorganize your data with CLUSTER and create appropriate indixes
> (dont forget to check statistics).

One question. Assume I have clustered and new data has been added after
that, according to the docs that data is added "outside" of the
clustered data. What happens when I run cluster again? I would assume
its smart and to only clusteres the new data, i.e. adding it to the
already created clusters, as apporpriate, so the execution time would be
a lot lower, right? or would it run through and recluster everything
from scratch again?

thomas


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