[HACKERS] RE: Plans for solving the VACUUM problem

2001-05-21 Thread Henshall, Stuart - WCP
Apologises if I've missed something, but isn't that the same xmin that ODBC uses for row versioning? - Stuart > Currently, the XMIN/XMAX command counters are used only by the current > transaction, and they are useless once the transaction finishes and take > up 8 bytes on disk.

Re: [HACKERS] Re: Plans for solving the VACUUM problem

2001-05-18 Thread Tom Lane
Hannu Krosing <[EMAIL PROTECTED]> writes: >> Irrelevant, not to mention already done ... > Do you mean that we already can do just analyze ? In development sources, yes. See http://www.ca.postgresql.org/devel-corner/docs/postgres/sql-analyze.html regards, tom lane ---

[HACKERS] Re: Plans for solving the VACUUM problem

2001-05-17 Thread Tom Lane
mlw <[EMAIL PROTECTED]> writes: > My only suggestion would be to store some information in the statistics about > whether or not, and how bad, a table needs to be vacuumed. I was toying with the notion of using the FSM to derive that info, somewhat indirectly to be sure (since what the FSM could

[HACKERS] Re: Plans for solving the VACUUM problem

2001-05-17 Thread August Zajonc
Heck ya... > I wonder if cache failures should be what drives the vacuum daemon to > vacuum a table? Sort of like, "Hey, someone is asking for free pages > for that table. Let's go find some!" That may work really well. > Another advantage of centralization is that we can record update/delete