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Replacement of the buffer replacement strategy with an ARC

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algorithm adopted for PostgreSQL.

Jan
This commit is contained in:
Jan Wieck
2003-11-13 00:40:02 +00:00
parent 27e8ef0535
commit 48adc0b34b
9 changed files with 941 additions and 225 deletions
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22
src/backend/commands/vacuum.c
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@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.265 2003/11/12 21:15:51 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.266 2003/11/13 00:40:00 wieck Exp $
*
*-------------------------------------------------------------------------
*/
@ -33,6 +33,7 @@
#include "commands/vacuum.h"
#include "executor/executor.h"
#include "miscadmin.h"
#include "storage/buf_internals.h"
#include "storage/freespace.h"
#include "storage/sinval.h"
#include "storage/smgr.h"
@ -310,8 +311,16 @@ vacuum(VacuumStmt *vacstmt)
else
old_context = MemoryContextSwitchTo(anl_context);
/*
* Tell the buffer replacement strategy that vacuum is
* causing the IO
*/
StrategyHintVacuum(true);
analyze_rel(relid, vacstmt);
StrategyHintVacuum(false);
if (vacstmt->vacuum)
CommitTransactionCommand();
else
@ -749,6 +758,12 @@ vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
SetQuerySnapshot(); /* might be needed for functions in
* indexes */
/*
* Tell the cache replacement strategy that vacuum is causing
* all following IO
*/
StrategyHintVacuum(true);
/*
* Check for user-requested abort. Note we want this to be inside a
* transaction, so xact.c doesn't issue useless WARNING.
@ -763,6 +778,7 @@ vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
ObjectIdGetDatum(relid),
0, 0, 0))
{
StrategyHintVacuum(false);
CommitTransactionCommand();
return true; /* okay 'cause no data there */
}
@ -796,6 +812,7 @@ vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
(errmsg("skipping \"%s\" --- only table or database owner can vacuum it",
RelationGetRelationName(onerel))));
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
return false;
}
@ -810,6 +827,7 @@ vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
(errmsg("skipping \"%s\" --- cannot vacuum indexes, views, or special system tables",
RelationGetRelationName(onerel))));
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
return false;
}
@ -824,6 +842,7 @@ vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
if (isOtherTempNamespace(RelationGetNamespace(onerel)))
{
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
return true; /* assume no long-lived data in temp
* tables */
@ -863,6 +882,7 @@ vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
/*
* Complete the transaction and free all temporary memory used.
*/
StrategyHintVacuum(false);
CommitTransactionCommand();
/*