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Centralize implementation of delay code by creating a pg_usleep()

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subroutine in src/port/pgsleep.c.  Remove platform dependencies from
miscadmin.h and put them in port.h where they belong.  Extend recent
vacuum cost-based-delay patch to apply to VACUUM FULL, ANALYZE, and
non-btree index vacuuming.

By the way, where is the documentation for the cost-based-delay patch?
This commit is contained in:
Tom Lane
2004-02-10 03:42:45 +00:00
parent 87bd956385
commit 58f337a343
16 changed files with 138 additions and 154 deletions
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25
src/backend/access/nbtree/nbtree.c
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@ -12,7 +12,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.112 2004/02/10 01:55:24 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.113 2004/02/10 03:42:43 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -22,6 +22,7 @@
#include "access/heapam.h"
#include "access/nbtree.h"
#include "catalog/index.h"
#include "commands/vacuum.h"
#include "miscadmin.h"
#include "storage/freespace.h"
#include "storage/smgr.h"
@ -584,27 +585,7 @@ btbulkdelete(PG_FUNCTION_ARGS)
maxoff;
BlockNumber nextpage;
CHECK_FOR_INTERRUPTS();
/*
* If we're called by a cost based vacuum, do the
* napping in case the balance exceeded the limit.
*/
if (VacuumCostActive && !InterruptPending &&
VacuumCostBalance >= VacuumCostLimit)
{
int msec;
msec = VacuumCostNaptime * VacuumCostBalance / VacuumCostLimit;
if (msec < VacuumCostNaptime * 4)
PG_MSLEEP(msec);
else
PG_MSLEEP(VacuumCostNaptime * 4);
VacuumCostBalance = 0;
CHECK_FOR_INTERRUPTS();
}
vacuum_delay_point();
ndeletable = 0;
page = BufferGetPage(buf);