| From: | "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> |
|---|---|
| To: | "Raghavendra" <raghavendra(dot)rao(at)enterprisedb(dot)com>, "Venkat Balaji" <venkat(dot)balaji(at)verse(dot)in> |
| Cc: | <sthomas(at)peak6(dot)com>, "PGSQL Performance" <pgsql-performance(at)postgresql(dot)org>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Subject: | Re: : Performance Improvement Strategy |
| Date: | 2011-10-05 16:13:59 |
| Message-ID: | 4E8C3BF70200002500041AAF@gw.wicourts.gov |
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| Lists: | pgsql-performance |
Raghavendra <raghavendra(dot)rao(at)enterprisedb(dot)com> wrote:
> Venkat Balaji <venkat(dot)balaji(at)verse(dot)in>wrote:
>> [attempt to calculate file space from row layout and number of
>> rows]
> One more point to add to this good discussion, each row header
> will occupy 24 bytes + 4 bytes pointer on page to tuple.
Not to mention:
http://www.postgresql.org/docs/9.1/interactive/storage-toast.html
-Kevin
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