On Mon, Oct 5, 2015 at 11:03 PM, Fujii Masao <masao.fu...@gmail.com> wrote: > On Fri, Oct 2, 2015 at 8:14 PM, Masahiko Sawada <sawada.m...@gmail.com> wrote: >>> +#define Anum_pg_class_relallfrozen 12 >>> Why is pg_class.relallfrozen necessary? ISTM that there is no user of it >>> now. >> >> The relallfrozen would be useful for user to estimate time to vacuum >> freeze or anti-wrapping vacuum before being done them actually. >> (Also this value is used on regression test.) >> But this information is not used on planning like relallvisible, so it >> would be good to move this information to another system view like >> pg_stat_*_tables. > > Or make pgstattuple and pgstattuple_approx report even the number > of frozen tuples? >
But we cannot know the number of frozen pages without installation of pageinspect module. I'm a bit concerned about that the all projects cannot install extentension module into postgresql on production environment. I think we need to provide such feature at least into core. Thought? Regards, -- Masahiko Sawada -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
