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Enable configurable log of autovacuum actions. Initial patch from Simon

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Riggs, additional code and docs by me.  Per discussion.
This commit is contained in:
Alvaro Herrera
2007-04-18 16:44:18 +00:00
parent 432ea3cffd
commit ef23a77441
7 changed files with 134 additions and 15 deletions
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43
src/backend/commands/analyze.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.104 2007/04/06 04:21:42 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.105 2007/04/18 16:44:17 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -22,6 +22,7 @@
#include "catalog/index.h"
#include "catalog/indexing.h"
#include "catalog/namespace.h"
#include "commands/dbcommands.h"
#include "commands/vacuum.h"
#include "executor/executor.h"
#include "miscadmin.h"
@ -29,10 +30,12 @@
#include "parser/parse_oper.h"
#include "parser/parse_relation.h"
#include "pgstat.h"
#include "postmaster/autovacuum.h"
#include "utils/acl.h"
#include "utils/datum.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/pg_rusage.h"
#include "utils/syscache.h"
#include "utils/tuplesort.h"
@ -109,6 +112,8 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
double totalrows,
totaldeadrows;
HeapTuple *rows;
PGRUsage ru0;
TimestampTz starttime = 0;
if (vacstmt->verbose)
elevel = INFO;
@ -190,6 +195,14 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
return;
}
/* measure elapsed time iff autovacuum logging requires it */
if (IsAutoVacuumWorkerProcess() && Log_autovacuum >= 0)
{
pg_rusage_init(&ru0);
if (Log_autovacuum > 0)
starttime = GetCurrentTimestamp();
}
ereport(elevel,
(errmsg("analyzing \"%s.%s\"",
get_namespace_name(RelationGetNamespace(onerel)),
@ -451,6 +464,34 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
* expose us to concurrent-update failures in update_attstats.)
*/
relation_close(onerel, NoLock);
/* Log the action if appropriate */
if (IsAutoVacuumWorkerProcess() && Log_autovacuum >= 0)
{
long diff;
if (Log_autovacuum > 0)
{
TimestampTz endtime;
int usecs;
long secs;
endtime = GetCurrentTimestamp();
TimestampDifference(starttime, endtime, &secs, &usecs);
diff = secs * 1000 + usecs / 1000;
}
if (Log_autovacuum == 0 || diff >= Log_autovacuum)
{
ereport(LOG,
(errmsg("automatic analyze of table \"%s.%s.%s\" system usage: %s",
get_database_name(MyDatabaseId),
get_namespace_name(RelationGetNamespace(onerel)),
RelationGetRelationName(onerel),
pg_rusage_show(&ru0))));
}
}
}
/*