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Commitedda70c

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committed
Fix vacuum's memory consumption
1 parent770d078 commitedda70c

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1 file changed

+11
-4
lines changed

1 file changed

+11
-4
lines changed

‎src/backend/commands/vacuum.c

Lines changed: 11 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.118 1999/08/09 03:16:47 tgl Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.119 1999/08/25 12:20:57 ishii Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -2549,12 +2549,19 @@ vc_reappage(VPageList vpl, VPageDescr vpc)
25492549
staticvoid
25502550
vc_vpinsert(VPageListvpl,VPageDescrvpnew)
25512551
{
2552+
#definePG_NPAGEDESC 1024
25522553

25532554
/* allocate a VPageDescr entry if needed */
25542555
if (vpl->vpl_num_pages==0)
2555-
vpl->vpl_pagedesc= (VPageDescr*)palloc(100*sizeof(VPageDescr));
2556-
elseif (vpl->vpl_num_pages %100==0)
2557-
vpl->vpl_pagedesc= (VPageDescr*)repalloc(vpl->vpl_pagedesc, (vpl->vpl_num_pages+100)*sizeof(VPageDescr));
2556+
{
2557+
vpl->vpl_pagedesc= (VPageDescr*)palloc(PG_NPAGEDESC*sizeof(VPageDescr));
2558+
vpl->vpl_num_allocated_pages=PG_NPAGEDESC;
2559+
}
2560+
elseif (vpl->vpl_num_pages >=vpl->vpl_num_allocated_pages)
2561+
{
2562+
vpl->vpl_num_allocated_pages *=2;
2563+
vpl->vpl_pagedesc= (VPageDescr*)repalloc(vpl->vpl_pagedesc,vpl->vpl_num_allocated_pages*sizeof(VPageDescr));
2564+
}
25582565
vpl->vpl_pagedesc[vpl->vpl_num_pages]=vpnew;
25592566
(vpl->vpl_num_pages)++;
25602567

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