> > I haven't had a chance to sit down and do any exhaustive testing > > yet and don't think I will for a while. That said, once 7.4 goes > > gold, I'm going to provide databases/postgresql-devel with a > > tunable that will allow people to choose what block size they > > would like (4k, 8K, 16K, 32K, or 64K) when they build the port. > > If you do this, you *have* to put in a very very big warning that > databases created with non-PostgreSQL-standard block sizes may not > be transferrable to a standard-PostgreSQL install ... that is Tom's > major problem, is cross-platform/system dump/restores may no work is > the database schema was designed with a 16k block size in mind ...
Agreed, but if anyone has a table with close to 1600 columns in a table... is either nuts or knows what they're doing. If someone has >1600 columns, that is an issue, but isn't one that I think can be easily fended off without the backend being able to adapt on the fly to different block sizes, which seems like something that could be done with a rewrite of some of this code when table spaces are introduced. -sc -- Sean Chittenden ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match