Add log_min_autovacuum_duration per-table option

This is useful to control autovacuum log volume, for situations where
monitoring only a set of tables is necessary.

Author: Michael Paquier
Reviewed by: A team led by Naoya Anzai (also including Akira Kurosawa,
Taiki Kondo, Huong Dangminh), Fujii Masao.

5 files changed, 43 insertions, 20 deletions

diff --git a/src/backend/access/common/reloptions.c b/src/backend/access/common/reloptions.c
index f008fab8211..8176b6a6d41 100644
--- a/src/backend/access/common/reloptions.c
+++ b/src/backend/access/common/reloptions.c
@@ -211,6 +211,14 @@ static relopt_int intRelOpts[] =
 	},
 	{
 		{
+			"log_autovacuum_min_duration",
+			"Sets the minimum execution time above which autovacuum actions will be logged",
+			RELOPT_KIND_HEAP | RELOPT_KIND_TOAST
+		},
+		-1, -1, INT_MAX
+	},
+	{
+		{
 			"pages_per_range",
 			"Number of pages that each page range covers in a BRIN index",
 			RELOPT_KIND_BRIN
@@ -1210,6 +1218,8 @@ default_reloptions(Datum reloptions, bool validate, relopt_kind kind)
 		offsetof(StdRdOptions, autovacuum) +offsetof(AutoVacOpts, multixact_freeze_max_age)},
 		{"autovacuum_multixact_freeze_table_age", RELOPT_TYPE_INT,
 		offsetof(StdRdOptions, autovacuum) +offsetof(AutoVacOpts, multixact_freeze_table_age)},
+		{"log_autovacuum_min_duration", RELOPT_TYPE_INT,
+		offsetof(StdRdOptions, autovacuum) +offsetof(AutoVacOpts, log_min_duration)},
 		{"autovacuum_vacuum_scale_factor", RELOPT_TYPE_REAL,
 		offsetof(StdRdOptions, autovacuum) +offsetof(AutoVacOpts, vacuum_scale_factor)},
 		{"autovacuum_analyze_scale_factor", RELOPT_TYPE_REAL,
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
index d4d19148e57..15ec0ad551c 100644
--- a/src/backend/commands/analyze.c
+++ b/src/backend/commands/analyze.c
@@ -85,7 +85,8 @@ static MemoryContext anl_context = NULL;
 static BufferAccessStrategy vac_strategy;
 
 
-static void do_analyze_rel(Relation onerel, int options, List *va_cols,
+static void do_analyze_rel(Relation onerel, int options,
+			   VacuumParams *params, List *va_cols,
 			   AcquireSampleRowsFunc acquirefunc, BlockNumber relpages,
 			   bool inh, bool in_outer_xact, int elevel);
 static void BlockSampler_Init(BlockSampler bs, BlockNumber nblocks,
@@ -115,8 +116,9 @@ static Datum ind_fetch_func(VacAttrStatsP stats, int rownum, bool *isNull);
  *	analyze_rel() -- analyze one relation
  */
 void
-analyze_rel(Oid relid, RangeVar *relation, int options, List *va_cols,
-			bool in_outer_xact, BufferAccessStrategy bstrategy)
+analyze_rel(Oid relid, RangeVar *relation, int options,
+			VacuumParams *params, List *va_cols, bool in_outer_xact,
+			BufferAccessStrategy bstrategy)
 {
 	Relation	onerel;
 	int			elevel;
@@ -151,7 +153,7 @@ analyze_rel(Oid relid, RangeVar *relation, int options, List *va_cols,
 	else
 	{
 		onerel = NULL;
-		if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
+		if (IsAutoVacuumWorkerProcess() && params->log_min_duration >= 0)
 			ereport(LOG,
 					(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
 				  errmsg("skipping analyze of \"%s\" --- lock not available",
@@ -266,14 +268,14 @@ analyze_rel(Oid relid, RangeVar *relation, int options, List *va_cols,
 	/*
 	 * Do the normal non-recursive ANALYZE.
 	 */
-	do_analyze_rel(onerel, options, va_cols, acquirefunc, relpages,
+	do_analyze_rel(onerel, options, params, va_cols, acquirefunc, relpages,
 				   false, in_outer_xact, elevel);
 
 	/*
 	 * If there are child tables, do recursive ANALYZE.
 	 */
 	if (onerel->rd_rel->relhassubclass)
-		do_analyze_rel(onerel, options, va_cols, acquirefunc, relpages,
+		do_analyze_rel(onerel, options, params, va_cols, acquirefunc, relpages,
 					   true, in_outer_xact, elevel);
 
 	/*
@@ -301,9 +303,10 @@ analyze_rel(Oid relid, RangeVar *relation, int options, List *va_cols,
  * appropriate acquirefunc for each child table.
  */
 static void
-do_analyze_rel(Relation onerel, int options, List *va_cols,
-			   AcquireSampleRowsFunc acquirefunc, BlockNumber relpages,
-			   bool inh, bool in_outer_xact, int elevel)
+do_analyze_rel(Relation onerel, int options, VacuumParams *params,
+			   List *va_cols, AcquireSampleRowsFunc acquirefunc,
+			   BlockNumber relpages, bool inh, bool in_outer_xact,
+			   int elevel)
 {
 	int			attr_cnt,
 				tcnt,
@@ -359,10 +362,10 @@ do_analyze_rel(Relation onerel, int options, List *va_cols,
 	save_nestlevel = NewGUCNestLevel();
 
 	/* measure elapsed time iff autovacuum logging requires it */
-	if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
+	if (IsAutoVacuumWorkerProcess() && params->log_min_duration >= 0)
 	{
 		pg_rusage_init(&ru0);
-		if (Log_autovacuum_min_duration > 0)
+		if (params->log_min_duration > 0)
 			starttime = GetCurrentTimestamp();
 	}
 
@@ -647,11 +650,11 @@ do_analyze_rel(Relation onerel, int options, List *va_cols,
 	vac_close_indexes(nindexes, Irel, NoLock);
 
 	/* Log the action if appropriate */
-	if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
+	if (IsAutoVacuumWorkerProcess() && params->log_min_duration >= 0)
 	{
-		if (Log_autovacuum_min_duration == 0 ||
+		if (params->log_min_duration == 0 ||
 			TimestampDifferenceExceeds(starttime, GetCurrentTimestamp(),
-									   Log_autovacuum_min_duration))
+									   params->log_min_duration))
 			ereport(LOG,
 					(errmsg("automatic analyze of table \"%s.%s.%s\" system usage: %s",
 							get_database_name(MyDatabaseId),
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bd57b683d83..7ead1617603 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -114,6 +114,9 @@ ExecVacuum(VacuumStmt *vacstmt, bool isTopLevel)
 	/* user-invoked vacuum is never "for wraparound" */
 	params.is_wraparound = false;
 
+	/* user-invoked vacuum never uses this parameter */
+	params.log_min_duration = -1;
+
 	/* Now go through the common routine */
 	vacuum(vacstmt->options, vacstmt->relation, InvalidOid, &params,
 		   vacstmt->va_cols, NULL, isTopLevel);
@@ -304,7 +307,7 @@ vacuum(int options, RangeVar *relation, Oid relid, VacuumParams *params,
 					PushActiveSnapshot(GetTransactionSnapshot());
 				}
 
-				analyze_rel(relid, relation, options,
+				analyze_rel(relid, relation, options, params,
 							va_cols, in_outer_xact, vac_strategy);
 
 				if (use_own_xacts)
@@ -1233,7 +1236,7 @@ vacuum_rel(Oid relid, RangeVar *relation, int options, VacuumParams *params)
 	else
 	{
 		onerel = NULL;
-		if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
+		if (IsAutoVacuumWorkerProcess() && params->log_min_duration >= 0)
 			ereport(LOG,
 					(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
 				   errmsg("skipping vacuum of \"%s\" --- lock not available",
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c
index cd5ca4c2f97..c3d6e598909 100644
--- a/src/backend/commands/vacuumlazy.c
+++ b/src/backend/commands/vacuumlazy.c
@@ -196,7 +196,7 @@ lazy_vacuum_rel(Relation onerel, int options, VacuumParams *params,
 	Assert(params != NULL);
 
 	/* measure elapsed time iff autovacuum logging requires it */
-	if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
+	if (IsAutoVacuumWorkerProcess() && params->log_min_duration >= 0)
 	{
 		pg_rusage_init(&ru0);
 		starttime = GetCurrentTimestamp();
@@ -328,13 +328,13 @@ lazy_vacuum_rel(Relation onerel, int options, VacuumParams *params,
 						 vacrelstats->new_dead_tuples);
 
 	/* and log the action if appropriate */
-	if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
+	if (IsAutoVacuumWorkerProcess() && params->log_min_duration >= 0)
 	{
 		TimestampTz endtime = GetCurrentTimestamp();
 
-		if (Log_autovacuum_min_duration == 0 ||
+		if (params->log_min_duration == 0 ||
 			TimestampDifferenceExceeds(starttime, endtime,
-									   Log_autovacuum_min_duration))
+									   params->log_min_duration))
 		{
 			StringInfoData	buf;
 			TimestampDifference(starttime, endtime, &secs, &usecs);
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index b2d37e5d479..db46134979e 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -2493,6 +2493,7 @@ table_recheck_autovac(Oid relid, HTAB *table_toast_map,
 		int			multixact_freeze_table_age;
 		int			vac_cost_limit;
 		int			vac_cost_delay;
+		int			log_min_duration;
 
 		/*
 		 * Calculate the vacuum cost parameters and the freeze ages.  If there
@@ -2515,6 +2516,11 @@ table_recheck_autovac(Oid relid, HTAB *table_toast_map,
 			? autovacuum_vac_cost_limit
 			: VacuumCostLimit;
 
+		/* -1 in autovac setting means use log_autovacuum_min_duration */
+		log_min_duration = (avopts && avopts->log_min_duration >= 0)
+			? avopts->log_min_duration
+			: Log_autovacuum_min_duration;
+
 		/* these do not have autovacuum-specific settings */
 		freeze_min_age = (avopts && avopts->freeze_min_age >= 0)
 			? avopts->freeze_min_age
@@ -2545,6 +2551,7 @@ table_recheck_autovac(Oid relid, HTAB *table_toast_map,
 		tab->at_params.multixact_freeze_min_age = multixact_freeze_min_age;
 		tab->at_params.multixact_freeze_table_age = multixact_freeze_table_age;
 		tab->at_params.is_wraparound = wraparound;
+		tab->at_params.log_min_duration = log_min_duration;
 		tab->at_vacuum_cost_limit = vac_cost_limit;
 		tab->at_vacuum_cost_delay = vac_cost_delay;
 		tab->at_relname = NULL;