On Thu, Jun 16, 2016 at 10:03 PM, Robert Haas <robertmh...@gmail.com> wrote: > On Thu, Jun 16, 2016 at 2:33 AM, Masahiko Sawada <sawada.m...@gmail.com> > wrote: >> Option name DISABLE_PAGE_SKIPPING is good to me. >> I'm still working on this, but here are some review comments. >> >> --- >> +CREATE FUNCTION pg_truncate_visibility_map(regclass) >> +RETURNS void >> +AS 'MODULE_PATHNAME', 'pg_truncate_visibility_map' >> +LANGUAGE C STRICT >> +PARALLEL UNSAFE; -- let's not make this any more dangerous >> + >> >> "REVOKE ALL ON FUNCTION pg_truncate_visibility_map(regclass) FROM >> PUBLIC;" is missing in pg_visibility/pg_visibility--1.0--1.1.sql. > > OK, thanks. I'll fix that. > >> I think that VACUUM with VERBOSE option can show the information for >> how many frozen pages we skipped like autovacuum does. Thought? >> Patch attached. > > I'm not sure. The messages VACUUM emits are already quite long and > hard to read, and adding more lines to them might make that problem > worse. On the other hand, having more details can be helpful, too.
Because these informations are emitted only when VERBOSE option is specified, I think that it would be better to output that rather than nothing, although it makes messages more complicated. Regards, -- Masahiko Sawada -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers