Re: questions about CLUSTER

On Wednesday 27 February 2008 13:35:16 Douglas J Hunley wrote:
> > > 2) is there any internal data in the db that would allow me to
> > > programmatically determine which tables would benefit from being
> > > clustered? 3) for that matter, is there info to allow me to determine
> > > which index it should be clustered on in cases where the table has more
> > > than one index?
> >
> > The pg_stat_user_indexes table keeps stats on how often the index is
> > used. Indexes that are used frequently are candidates for clustering.
>
> I had just started looking at this actually.

ok, so for a follow-on, should I be more concerned with idx_scan,
idx_tup_read, or idx_tup_fetch when determining which indexes are 'good'
candidates?

again, tia. i feel like such a noob around here :)

--
Douglas J Hunley (doug at hunley.homeip.net) - Linux User #174778
http://doug.hunley.homeip.net

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