Have autovacuum report its activities to the stat collector.

This commit is contained in:
Alvaro Herrera 2006-05-19 15:15:37 +00:00
parent 4adab7eed3
commit 49b3462abb
4 changed files with 96 additions and 12 deletions

View File

@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.18 2006/05/03 22:45:26 tgl Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.19 2006/05/19 15:15:37 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -45,6 +45,8 @@
#include "utils/fmgroids.h"
#include "utils/memutils.h"
#include "utils/ps_status.h"
#include "utils/lsyscache.h"
#include "utils/rel.h"
#include "utils/relcache.h"
#include "utils/syscache.h"
@ -109,6 +111,8 @@ static void test_rel_for_autovac(Oid relid, PgStat_StatTabEntry *tabentry,
List **toast_table_ids);
static void autovacuum_do_vac_analyze(List *relids, bool dovacuum,
bool doanalyze, bool freeze);
static void autovac_report_activity(VacuumStmt *vacstmt,
List *relids);
/*
@ -911,12 +915,75 @@ autovacuum_do_vac_analyze(List *relids, bool dovacuum, bool doanalyze,
vacstmt->relation = NULL; /* all tables, or not used if relids != NIL */
vacstmt->va_cols = NIL;
/* Let pgstat know what we're doing */
autovac_report_activity(vacstmt, relids);
vacuum(vacstmt, relids);
pfree(vacstmt);
MemoryContextSwitchTo(old_cxt);
}
/*
* autovac_report_activity
* Report to pgstat what autovacuum is doing
*
* We send a SQL string corresponding to what the user would see if the
* equivalent command was to be issued manually.
*
* Note we assume that we are going to report the next command as soon as we're
* done with the current one, and exiting right after the last one, so we don't
* bother to report "<IDLE>" or some such.
*/
#define MAX_AUTOVAC_ACTIV_LEN (NAMEDATALEN * 2 + 32)
static void
autovac_report_activity(VacuumStmt *vacstmt, List *relids)
{
char activity[MAX_AUTOVAC_ACTIV_LEN];
/*
* This case is not currently exercised by the autovac code. Fill it in
* if needed.
*/
if (list_length(relids) > 1)
elog(WARNING, "vacuuming >1 rel unsupported");
/* Report the command and possible options */
if (vacstmt->vacuum)
snprintf(activity, MAX_AUTOVAC_ACTIV_LEN,
"VACUUM%s%s%s",
vacstmt->full ? " FULL" : "",
vacstmt->freeze ? " FREEZE" : "",
vacstmt->analyze ? " ANALYZE" : "");
else if (vacstmt->analyze)
snprintf(activity, MAX_AUTOVAC_ACTIV_LEN,
"ANALYZE");
/* Report the qualified name of the first relation, if any */
if (list_length(relids) > 0)
{
Oid relid = linitial_oid(relids);
Relation rel;
rel = RelationIdGetRelation(relid);
if (rel == NULL)
elog(WARNING, "cache lookup failed for relation %u", relid);
else
{
char *nspname = get_namespace_name(RelationGetNamespace(rel));
int len = strlen(activity);
snprintf(activity + len, MAX_AUTOVAC_ACTIV_LEN - len,
" %s.%s", nspname, RelationGetRelationName(rel));
pfree(nspname);
RelationClose(rel);
}
}
pgstat_report_activity(activity);
}
/*
* AutoVacuumingActive
* Check GUC vars and report whether the autovacuum process should be

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@ -13,7 +13,7 @@
*
* Copyright (c) 2001-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.124 2006/04/27 00:06:58 momjian Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.125 2006/05/19 15:15:37 alvherre Exp $
* ----------
*/
#include "postgres.h"
@ -700,17 +700,17 @@ pgstat_bestart(void)
/*
* We may not have a MyProcPort (eg, if this is the autovacuum process).
* For the moment, punt and don't send BESTART --- would be better to work
* out a clean way of handling "unknown clientaddr".
* Send an all-zeroes client address, which is dealt with specially in
* pg_stat_get_backend_client_addr and pg_stat_get_backend_client_port.
*/
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_BESTART);
msg.m_databaseid = MyDatabaseId;
msg.m_userid = GetSessionUserId();
if (MyProcPort)
{
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_BESTART);
msg.m_databaseid = MyDatabaseId;
msg.m_userid = GetSessionUserId();
memcpy(&msg.m_clientaddr, &MyProcPort->raddr, sizeof(msg.m_clientaddr));
pgstat_send(&msg, sizeof(msg));
}
else
MemSet(&msg.m_clientaddr, 0, sizeof(msg.m_clientaddr));
pgstat_send(&msg, sizeof(msg));
/*
* Set up a process-exit hook to ensure we flush the last batch of

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@ -37,7 +37,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.483 2006/03/18 22:09:58 neilc Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.484 2006/05/19 15:15:37 alvherre Exp $
*
* NOTES
*
@ -2182,6 +2182,9 @@ reaper(SIGNAL_ARGS)
{
AutoVacPID = 0;
autovac_stopped();
/* Tell the collector about process termination */
pgstat_beterm(pid);
if (exitstatus != 0)
HandleChildCrash(pid, exitstatus,
_("autovacuum process"));

View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.27 2006/03/05 15:58:43 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.28 2006/05/19 15:15:37 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -389,6 +389,7 @@ Datum
pg_stat_get_backend_client_addr(PG_FUNCTION_ARGS)
{
PgStat_StatBeEntry *beentry;
SockAddr zero_clientaddr;
int32 beid;
char remote_host[NI_MAXHOST];
int ret;
@ -405,6 +406,12 @@ pg_stat_get_backend_client_addr(PG_FUNCTION_ARGS)
if (!superuser() && beentry->userid != GetUserId())
PG_RETURN_NULL();
/* A zeroed client addr means we don't know */
memset(&zero_clientaddr, 0, sizeof(zero_clientaddr));
if (memcmp(&(beentry->clientaddr), &zero_clientaddr,
sizeof(zero_clientaddr) == 0))
PG_RETURN_NULL();
switch (beentry->clientaddr.addr.ss_family)
{
case AF_INET:
@ -432,6 +439,7 @@ Datum
pg_stat_get_backend_client_port(PG_FUNCTION_ARGS)
{
PgStat_StatBeEntry *beentry;
SockAddr zero_clientaddr;
int32 beid;
char remote_port[NI_MAXSERV];
int ret;
@ -448,6 +456,12 @@ pg_stat_get_backend_client_port(PG_FUNCTION_ARGS)
if (!superuser() && beentry->userid != GetUserId())
PG_RETURN_NULL();
/* A zeroed client addr means we don't know */
memset(&zero_clientaddr, 0, sizeof(zero_clientaddr));
if (memcmp(&(beentry->clientaddr), &zero_clientaddr,
sizeof(zero_clientaddr) == 0))
PG_RETURN_NULL();
switch (beentry->clientaddr.addr.ss_family)
{
case AF_INET: