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David Rowley 1cbbee0338 Add VACUUM/ANALYZE BUFFER_USAGE_LIMIT option 
Add new options to the VACUUM and ANALYZE commands called
BUFFER_USAGE_LIMIT to allow users more control over how large to make the
buffer access strategy that is used to limit the usage of buffers in
shared buffers.  Larger rings can allow VACUUM to run more quickly but
have the drawback of VACUUM possibly evicting more buffers from shared
buffers that might be useful for other queries running on the database.

Here we also add a new GUC named vacuum_buffer_usage_limit which controls
how large to make the access strategy when it's not specified in the
VACUUM/ANALYZE command.  This defaults to 256KB, which is the same size as
the access strategy was prior to this change.  This setting also
controls how large to make the buffer access strategy for autovacuum.

Per idea by Andres Freund.

Author: Melanie Plageman
Reviewed-by: David Rowley
Reviewed-by: Andres Freund
Reviewed-by: Justin Pryzby
Reviewed-by: Bharath Rupireddy
Discussion: https://postgr.es/m/20230111182720.ejifsclfwymw2reb@awork3.anarazel.de
2023-04-07 11:40:31 +12:00
..
access heapam: Pass number of required pages to RelationGetBufferForTuple() 2023-04-06 16:17:16 -07:00
archive Redesign archive modules 2023-02-17 14:26:42 +09:00
backup Update copyright for 2023 2023-01-02 15:00:37 -05:00
bootstrap Update copyright for 2023 2023-01-02 15:00:37 -05:00
catalog doc: Update SQL features/conformance information to SQL:2023 2023-04-05 09:20:25 +02:00
commands Refresh cost-based delay params more frequently in autovacuum 2023-04-07 01:00:21 +02:00
common Support long distance matching for zstd compression 2023-04-06 17:18:42 +02:00
datatype Code review for commit 05a7be935. 2023-01-26 12:51:00 -05:00
executor Revert 11470f544e 2023-04-03 16:54:31 +03:00
fe_utils Update copyright for 2023 2023-01-02 15:00:37 -05:00
foreign Update copyright for 2023 2023-01-02 15:00:37 -05:00
jit Update copyright for 2023 2023-01-02 15:00:37 -05:00
lib Fix various typos in code and tests 2023-02-09 14:43:53 +09:00
libpq Copy and store addrinfo in libpq-owned private memory 2023-03-29 21:41:27 +02:00
mb Update copyright for 2023 2023-01-02 15:00:37 -05:00
nodes Fix row tracking in pg_stat_statements with extended query protocol 2023-04-06 09:29:03 +09:00
optimizer Fix mis-handling of outer join quals generated by EquivalenceClasses. 2023-02-23 11:05:58 -05:00
parser SQL/JSON: support the IS JSON predicate 2023-03-31 22:34:04 +02:00
partitioning Fix various typos in code and tests 2023-02-09 14:43:53 +09:00
pch Update copyright for 2023 2023-01-02 15:00:37 -05:00
port Don't leak descriptors into subprograms. 2023-03-03 10:43:33 +13:00
portability instr_time: Represent time as an int64 on all platforms 2023-01-20 21:16:47 -08:00
postmaster Separate vacuum cost variables from GUCs 2023-04-07 00:54:53 +02:00
regex Update copyright for 2023 2023-01-02 15:00:37 -05:00
replication Add new predefined role pg_create_subscription. 2023-03-30 11:37:19 -04:00
rewrite Make Vars be outer-join-aware. 2023-01-30 13:16:20 -05:00
snowball Update copyright for 2023 2023-01-02 15:00:37 -05:00
statistics Update copyright for 2023 2023-01-02 15:00:37 -05:00
storage Add VACUUM/ANALYZE BUFFER_USAGE_LIMIT option 2023-04-07 11:40:31 +12:00
tcop Update copyright for 2023 2023-01-02 15:00:37 -05:00
tsearch Fix ts_headline() to handle ORs and phrase queries more honestly. 2023-01-19 16:21:44 -05:00
utils Add VACUUM/ANALYZE BUFFER_USAGE_LIMIT option 2023-04-07 11:40:31 +12:00
.gitignore Refactor dlopen() support 2018-09-06 11:33:04 +02:00
c.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
fmgr.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
funcapi.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
getopt_long.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
Makefile Include headers of archive/ in installation 2023-03-10 20:08:10 +09:00
meson.build Include headers of archive/ in installation 2023-03-10 20:08:10 +09:00
miscadmin.h Add VACUUM/ANALYZE BUFFER_USAGE_LIMIT option 2023-04-07 11:40:31 +12:00
pg_config.h.in libpq: Add sslcertmode option to control client certificates 2023-03-24 13:34:26 +09:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_ext.h.meson meson: Add initial version of meson based build system 2022-09-21 22:37:17 -07:00
pg_config_manual.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
pg_getopt.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
pg_trace.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
pgstat.h bufmgr: Introduce infrastructure for faster relation extension 2023-04-05 16:21:09 -07:00
pgtar.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
pgtime.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
port.h Add SHELL_ERROR and SHELL_EXIT_CODE magic variables to psql. 2023-03-21 13:03:56 -04:00
postgres.h New header varatt.h split off from postgres.h 2023-01-10 05:54:36 +01:00
postgres_ext.h Move RelFileNumber declarations to common/relpath.h. 2022-09-27 12:01:57 -04:00
postgres_fe.h Update copyright for 2023 2023-01-02 15:00:37 -05:00
varatt.h New header varatt.h split off from postgres.h 2023-01-10 05:54:36 +01:00
windowapi.h Update copyright for 2023 2023-01-02 15:00:37 -05:00