Matthew T. O'Connor wrote: > On Thu, 2003-09-11 at 18:25, Tom Lane wrote: > > "Matthew T. O'Connor" <[EMAIL PROTECTED]> writes: > > > hrm.... OK. Patch forthcoming.... > > > > BTW, I am not sure it is a good idea to suppress "redundant" vacuuming > > of shared tables in the first place. The trouble with doing so is that > > if you only vacuum pg_shadow through template1, then only template1 will > > ever have up-to-date statistics about it. That's not good. > > > > You might be able to get away with doing actual vacuums only through > > template1, and doing just ANALYZEs every so often in other DBs. > > I made a patch to fix this, but in testing it I noticed that the stats > system doesn't work on shared tables as I was expecting it too (as my > latest patch requires it too :-). It treats instances of shared tables > in separate databases as totally unique tables. This makes it hard to > know how much activity has really gone on for a shared table. > > Is the behavior of the following example expected / desired?
I suspect is just a bug because no one noticed it before. As I understand it, the stats system is recorded per-database. We could add stuff so the global tables are only recorded in template1 or perhaps record in template1 but report template1's numbers for all databases. -- 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 6: Have you searched our list archives? http://archives.postgresql.org
