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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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21
src/backend/utils/init/flatfiles.c
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@ -23,7 +23,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/utils/init/flatfiles.c,v 1.13 2005/07/28 22:27:02 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/init/flatfiles.c,v 1.14 2005/08/11 21:11:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -208,12 +208,14 @@ write_database_file(Relation drel)
char *datname;
Oid datoid;
Oid dattablespace;
TransactionId datfrozenxid;
TransactionId datfrozenxid,
datvacuumxid;
datname = NameStr(dbform->datname);
datoid = HeapTupleGetOid(tuple);
dattablespace = dbform->dattablespace;
datfrozenxid = dbform->datfrozenxid;
datvacuumxid = dbform->datvacuumxid;
/*
* Identify the oldest datfrozenxid, ignoring databases that are not
@ -242,13 +244,14 @@ write_database_file(Relation drel)
}
/*
* The file format is: "dbname" oid tablespace frozenxid
* The file format is: "dbname" oid tablespace frozenxid vacuumxid
*
* The xid is not needed for backend startup, but may be of use
* for forensic purposes.
* The xids are not needed for backend startup, but are of use to
* autovacuum, and might also be helpful for forensic purposes.
*/
fputs_quote(datname, fp);
fprintf(fp, " %u %u %u\n", datoid, dattablespace, datfrozenxid);
fprintf(fp, " %u %u %u %u\n",
datoid, dattablespace, datfrozenxid, datvacuumxid);
}
heap_endscan(scan);
@ -654,8 +657,10 @@ write_auth_file(Relation rel_authid, Relation rel_authmem)
* base backup which may be far out of sync with the current state.
*
* In theory we could skip rebuilding the flat files if no WAL replay
* occurred, but it seems safest to just do it always. We have to
* scan pg_database to compute the XID wrap limit anyway.
* occurred, but it seems best to just do it always. We have to
* scan pg_database to compute the XID wrap limit anyway. Also, this
* policy means we need not force initdb to change the format of the
* flat files.
*
* In a standalone backend we pass database_only = true to skip processing
* the auth file. We won't need it, and building it could fail if there's