I just updated the FAQ to suggest 32 as the header size (I am assuming OID's and 4-byte alignment). I am also assuming 7.5 which will loose the cmin/cmax compression.
--------------------------------------------------------------------------- Tom Lane wrote: > Ian Barwick <[EMAIL PROTECTED]> writes: > > There is a little info in the FAQ: > > http://www.postgresql.org/docs/faqs/FAQ.html > > particularly sections 4.6 and 4.14 > > I think the calculation in section 4.6 is out of date --- it's been > awhile since row headers were 36 bytes. The more correct number is > between 24 and 32 bytes depending on whether you created the table > WITH OIDS and whether your machine requires 4- or 8-byte alignment. > > regards, tom lane > -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
