Alvaro Herrera e2a186b03c Add a multi-worker capability to autovacuum. This allows multiple worker ... processes to be running simultaneously. Also, now autovacuum processes do not count towards the max_connections limit; they are counted separately from regular processes, and are limited by the new GUC variable autovacuum_max_workers. The launcher now has intelligence to launch workers on each database every autovacuum_naptime seconds, limited only on the max amount of worker slots available. Also, the global worker I/O utilization is limited by the vacuum cost-based delay feature. Workers are "balanced" so that the total I/O consumption does not exceed the established limit. This part of the patch was contributed by ITAGAKI Takahiro. Per discussion.		2007-04-16 18:30:04 +00:00
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buffer	Add some instrumentation to the bgwriter, through the stats collector.	2007-03-30 18:34:56 +00:00
file	Revert temp_tablespaces because of coding problems, per Tom.	2007-03-06 02:06:15 +00:00
freespace	Remove remains of old depend target.	2007-01-20 17:16:17 +00:00
ipc	Remove the CheckpointStartLock in favor of having backends show whether they	2007-04-03 16:34:36 +00:00
large_object	Support varlena fields with single-byte headers and unaligned storage.	2007-04-06 04:21:44 +00:00
lmgr	Add a multi-worker capability to autovacuum. This allows multiple worker	2007-04-16 18:30:04 +00:00
page	Suppress useless searches for unused line pointers in PageAddItem. To do	2007-03-02 00:48:44 +00:00
smgr	Rearrange mdsync() looping logic to avoid the problem that a sufficiently	2007-04-12 17:10:55 +00:00
Makefile	Replace useless uses of := by = in makefiles.	2007-02-09 15:56:00 +00:00