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Re: Measuring relation free space
On Wed, Jan 18, 2012 at 7:01 PM, Noah Misch <noah(at)leadboat(dot)com> wrote: > On Wed, Jan 18, 2012 at 09:46:20AM -0500, Jaime Casanova wrote: >> >> ignoring all non-leaf pages still gives a considerable difference >> between pgstattuple and relation_free_space() > > pgstattuple() counts the single B-tree meta page as always-full, while > relation_free_space() skips it for all purposes. For tiny indexes, that can > shift the percentage dramatically. > ok, i will reformulate the question. why is fine ignoring non-leaf pages but is not fine to ignore the meta page? -- Jaime Casanova www.2ndQuadrant.com Professional PostgreSQL: Soporte 24x7 y capacitación
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- Re: Measuring relation free space at 2012-01-19 00:01:05 from Noah Misch
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- Re: Measuring relation free space at 2012-01-21 01:33:30 from Noah Misch
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