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Integrate autovacuum functionality into the backend. There's still a
few loose ends to be dealt with, but it seems to work. Alvaro Herrera, based on the contrib code by Matthew O'Connor.
This commit is contained in:
Tom Lane
@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/init/miscinit.c,v 1.145 2005/07/04 04:51:50 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/init/miscinit.c,v 1.146 2005/07/14 05:13:41 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -32,6 +32,7 @@
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#include "catalog/pg_authid.h"
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#include "libpq/libpq-be.h"
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#include "miscadmin.h"
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#include "postmaster/autovacuum.h"
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#include "storage/fd.h"
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#include "storage/ipc.h"
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#include "storage/pg_shmem.h"
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@@ -394,7 +395,7 @@ void
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InitializeSessionUserIdStandalone(void)
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{
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/* This function should only be called in a single-user backend. */
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AssertState(!IsUnderPostmaster);
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AssertState(!IsUnderPostmaster || IsAutoVacuumProcess());
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/* call only once */
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AssertState(!OidIsValid(AuthenticatedUserId));
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@@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/init/postinit.c,v 1.152 2005/07/04 04:51:50 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/init/postinit.c,v 1.153 2005/07/14 05:13:41 tgl Exp $
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*
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*
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*-------------------------------------------------------------------------
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@@ -29,6 +29,7 @@
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#include "libpq/hba.h"
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#include "mb/pg_wchar.h"
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#include "miscadmin.h"
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#include "postmaster/autovacuum.h"
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#include "postmaster/postmaster.h"
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#include "storage/backendid.h"
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#include "storage/fd.h"
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@@ -268,7 +269,8 @@ BaseInit(void)
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* InitPostgres
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* Initialize POSTGRES.
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*
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* In bootstrap mode neither of the parameters are used.
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* In bootstrap mode neither of the parameters are used. In autovacuum
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* mode, the username parameter is not used.
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*
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* The return value indicates whether the userID is a superuser. (That
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* can only be tested inside a transaction, so we want to do it during
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@@ -282,6 +284,7 @@ bool
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InitPostgres(const char *dbname, const char *username)
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{
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bool bootstrap = IsBootstrapProcessingMode();
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bool autovacuum = IsAutoVacuumProcess();
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bool am_superuser;
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/*
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@@ -402,10 +405,11 @@ InitPostgres(const char *dbname, const char *username)
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RelationCacheInitializePhase2();
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/*
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* Figure out our postgres user id. In standalone mode we use a fixed
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* id, otherwise we figure it out from the authenticated user name.
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* Figure out our postgres user id. In standalone mode and in the
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* autovacuum process, we use a fixed id, otherwise we figure it out from
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* the authenticated user name.
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*/
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if (bootstrap)
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if (bootstrap || autovacuum)
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InitializeSessionUserIdStandalone();
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else if (!IsUnderPostmaster)
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{
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@@ -441,7 +445,7 @@ InitPostgres(const char *dbname, const char *username)
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/*
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* Check if user is a superuser.
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*/
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if (bootstrap)
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if (bootstrap || autovacuum)
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am_superuser = true;
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else
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am_superuser = superuser();
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@@ -10,7 +10,7 @@
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* Written by Peter Eisentraut <peter_e@gmx.net>.
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.273 2005/07/05 23:18:10 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.274 2005/07/14 05:13:42 tgl Exp $
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*
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*--------------------------------------------------------------------
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*/
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@@ -45,6 +45,7 @@
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#include "optimizer/prep.h"
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#include "parser/parse_expr.h"
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#include "parser/parse_relation.h"
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#include "postmaster/autovacuum.h"
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#include "postmaster/bgwriter.h"
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#include "postmaster/syslogger.h"
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#include "postmaster/postmaster.h"
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@@ -286,6 +287,8 @@ const char *const config_group_names[] =
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gettext_noop("Statistics / Monitoring"),
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/* STATS_COLLECTOR */
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gettext_noop("Statistics / Query and Index Statistics Collector"),
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/* AUTOVACUUM */
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gettext_noop("Auto Vacuum"),
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/* CLIENT_CONN */
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gettext_noop("Client Connection Defaults"),
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/* CLIENT_CONN_STATEMENT */
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@@ -678,6 +681,15 @@ static struct config_bool ConfigureNamesBool[] =
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false, NULL, NULL
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},
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{
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{"autovacuum", PGC_SIGHUP, AUTOVACUUM,
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gettext_noop("Starts the auto vacuum subprocess."),
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NULL
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},
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&autovacuum_start_daemon,
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false, NULL, NULL
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},
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{
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{"trace_notify", PGC_USERSET, DEVELOPER_OPTIONS,
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gettext_noop("Generates debugging output for LISTEN and NOTIFY."),
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@@ -1389,6 +1401,31 @@ static struct config_int ConfigureNamesInt[] =
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BLCKSZ, BLCKSZ, BLCKSZ, NULL, NULL
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},
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{
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{"autovacuum_naptime", PGC_SIGHUP, AUTOVACUUM,
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gettext_noop("Time to sleep between autovacuum runs, in seconds."),
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NULL
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},
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&autovacuum_naptime,
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60, 0, INT_MAX, NULL, NULL
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},
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{
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{"autovacuum_vacuum_threshold", PGC_SIGHUP, AUTOVACUUM,
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gettext_noop("Minimum number of tuple updates or deletes prior to vacuum."),
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NULL
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},
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&autovacuum_vac_thresh,
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1000, 0, INT_MAX, NULL, NULL
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},
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{
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{"autovacuum_analyze_threshold", PGC_SIGHUP, AUTOVACUUM,
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gettext_noop("Minimum number of tuple inserts, updates or deletes prior to analyze."),
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NULL
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},
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&autovacuum_anl_thresh,
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500, 0, INT_MAX, NULL, NULL
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},
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/* End-of-list marker */
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{
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{NULL, 0, 0, NULL, NULL}, NULL, 0, 0, 0, NULL, NULL
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@@ -1487,6 +1524,23 @@ static struct config_real ConfigureNamesReal[] =
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0.5, 0.0, 1.0, assign_random_seed, show_random_seed
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},
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{
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{"autovacuum_vacuum_scale_factor", PGC_SIGHUP, AUTOVACUUM,
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gettext_noop("Number of tuple updates or deletes prior to vacuum as a fraction of reltuples."),
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NULL
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},
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&autovacuum_vac_scale,
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0.4, 0.0, 100.0, NULL, NULL
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},
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{
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{"autovacuum_analyze_scale_factor", PGC_SIGHUP, AUTOVACUUM,
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gettext_noop("Number of tuple inserts, updates or deletes prior to analyze as a fraction of reltuples."),
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NULL
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},
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&autovacuum_anl_scale,
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0.2, 0.0, 100.0, NULL, NULL
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},
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/* End-of-list marker */
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{
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{NULL, 0, 0, NULL, NULL}, NULL, 0.0, 0.0, 0.0, NULL, NULL
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@@ -284,6 +284,18 @@
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#stats_reset_on_server_start = on
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#---------------------------------------------------------------------------
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# AUTOVACUUM PARAMETERS
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#---------------------------------------------------------------------------
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#autovacuum = false # enable autovacuum subprocess?
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#autovacuum_naptime = 60 # time between autovacuum runs, in seconds
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#autovacuum_vacuum_threshold = 1000 # min # of tuple updates before vacuum
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#autovacuum_analyze_threshold = 500 # min # of tuple updates before analyze
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#autovacuum_vacuum_scale_factor = 0.4 # fraction of rel size before vacuum
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#autovacuum_analyze_scale_factor = 0.2 # fraction of rel size before analyze
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#---------------------------------------------------------------------------
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# CLIENT CONNECTION DEFAULTS
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#---------------------------------------------------------------------------
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