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

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql-server/ oc/src/sgml/runtime.sgml rc/back ...
Date: 2003-03-04 21:51:22
Message-ID: 20030304215122.756CE51E577@postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl(at)postgresql(dot)org	03/03/04 16:51:22

Modified files:
	doc/src/sgml   : runtime.sgml 
	src/backend/access/nbtree: nbtpage.c nbtree.c 
	src/backend/commands: vacuum.c vacuumlazy.c 
	src/backend/storage/freespace: freespace.c 
	src/backend/storage/smgr: smgr.c 
	src/backend/utils/misc: guc.c postgresql.conf.sample 
	src/include/storage: freespace.h 

Log message:
	Reimplement free-space-map management as per recent discussions.
	Adjustable threshold is gone in favor of keeping track of total requested
	page storage and doling out proportional fractions to each relation
	(with a minimum amount per relation, and some quantization of the results
	to avoid thrashing with small changes in page counts).  Provide special-
	case code for indexes so as not to waste space storing useless page
	free space counts.  Restructure internal data storage to be a flat array
	instead of list-of-chunks; this may cost a little more work in data
	copying when reorganizing, but allows binary search to be used during
	lookup_fsm_page_entry().


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