pgsql-server/ oc/src/sgml/runtime.sgml rc/back ...

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)postgresql(dot)org 02/08/11 20:36:12

Modified files:
doc/src/sgml : runtime.sgml
src/backend/utils/init: globals.c
src/backend/utils/misc: guc.c postgresql.conf.sample
src/backend/utils/mmgr: aset.c mcxt.c
src/backend/utils/sort: tuplesort.c tuplestore.c
src/include/nodes: memnodes.h
src/include/utils: memutils.h

Log message:
Change memory-space accounting mechanism in tuplesort.c and tuplestore.c
to make a reasonable attempt at accounting for palloc overhead, not just
the requested size of each memory chunk. Since in many scenarios this
will make for a significant reduction in the amount of space acquired,
partially compensate by doubling the default value of SORT_MEM to 1Mb.
Per discussion in pgsql-general around 9-Jun-2002..