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Autovacuum loose end mop-up. Provide autovacuum-specific vacuum cost

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delay and limit, both as global GUCs and as table-specific entries in
pg_autovacuum.  stats_reset_on_server_start is now OFF by default,
but a reset is forced if we did WAL replay.  XID-wrap vacuums do not
ANALYZE, but do FREEZE if it's a template database.  Alvaro Herrera
This commit is contained in:
Tom Lane
2005-08-11 21:11:50 +00:00
parent f6c30d54fa
commit d90c531188
18 changed files with 456 additions and 209 deletions
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36
src/backend/postmaster/pgstat.c
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@ -13,7 +13,7 @@
*
* Copyright (c) 2001-2005, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.104 2005/08/09 21:14:55 tgl Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.105 2005/08/11 21:11:44 tgl Exp $
* ----------
*/
#include "postgres.h"
@ -100,7 +100,7 @@
* ----------
*/
bool pgstat_collect_startcollector = true;
bool pgstat_collect_resetonpmstart = true;
bool pgstat_collect_resetonpmstart = false;
bool pgstat_collect_querystring = false;
bool pgstat_collect_tuplelevel = false;
bool pgstat_collect_blocklevel = false;
@ -237,7 +237,7 @@ pgstat_init(void)
* statistics on postmaster start, simply remove the stats file.
*/
if (!pgstat_collect_startcollector || pgstat_collect_resetonpmstart)
unlink(PGSTAT_STAT_FILENAME);
pgstat_reset_all();
/*
* Nothing else required if collector will not get started
@ -456,6 +456,18 @@ startup_failed:
pgstat_collect_blocklevel = false;
}
/*
* pgstat_reset_all() -
*
* Remove the stats file. This is used on server start if the
* stats_reset_on_server_start feature is enabled, or if WAL
* recovery is needed after a crash.
*/
void
pgstat_reset_all(void)
{
unlink(PGSTAT_STAT_FILENAME);
}
#ifdef EXEC_BACKEND
@ -677,11 +689,19 @@ pgstat_bestart(void)
if (pgStatSock < 0)
return;
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));
/*
* 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".
*/
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));
}
/*
* Set up a process-exit hook to ensure we flush the last batch of