Tom Lane wrote: > Bruce Momjian <[EMAIL PROTECTED]> writes: > > Tom Lane wrote: > >> One of the things on the TODO list is making the size of temp-table > >> buffers user-configurable. (Temp table buffers are per-backend, they > >> are not part of the shared buffer arena.) With a large temp-table arena > >> we'd never need to write to the kernel in the first place. Right now > >> you could manually increase the #define that sets it, but it would not > >> pay to make it very large because the management algorithms are very > >> stupid (linear scans). That has to be fixed first :-( > > > I assume you mean your TODO list because the official one has no mention > > of this. > > Doesn't it? We've surely discussed the problem enough times, eg > http://archives.postgresql.org/pgsql-hackers/2002-08/msg00380.php > http://archives.postgresql.org/pgsql-hackers/2002-09/msg01368.php > or for that matter here's Vadim complaining about it seven years ago: > http://archives.postgresql.org/pgsql-hackers/1997-12/msg00215.php
OK, added: * Allow the size of the buffer cache used by temporary objects to be specified as a GUC variable Larger local buffer cache sizes requires more efficient handling of local cache lookups. -- 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 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
