2010/12/6 pasman pasmański <pasman.p@gmail.com>:
> hello.
>
> i tested how are distributed values xmin,xmax on pages.
> in my tables . typically there are no more than 80 records
> on pages.
>
> maybe its possible to compress xmin & xmax values to
> 1 byte/per record (+table of transactions per page)?
> its reduce the space when more than 1 record is
> from the same transaction.
Not a bad idea, but not easy to implement, I think.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company