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Allow set max number of tuples in leftist tree for sorts 

(-S memory,tuples)
This commit is contained in:
Vadim B. Mikheev 1997-09-18 05:19:17 +00:00
parent 36b54847cb
commit 10971a6f81
1 changed files with 26 additions and 4 deletions
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30
src/backend/tcop/postgres.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.46 1997/09/15 14:28:16 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.47 1997/09/18 05:19:17 vadim Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -1120,10 +1120,32 @@ PostgresMain(int argc, char *argv[])
case 'S':
/* ----------------
* S - amount of sort memory to use in 1k bytes
* S - amount of sort memory to use in 1k bytes and
* (optional) max number of tuples in leftist tree
* ----------------
*/
SortMem = atoi(optarg);
{
int S;
char *p = strchr (optarg, ',');
if ( p != NULL )
{
*p = 0;
S = atoi(optarg);
if ( S >= 4*MAXBLCKSZ/1024 )
SortMem = S;
S = atoi (p + 1);
if ( S >= 32 )
SortTuplesInTree = S;
*p = ',';
}
else
{
S = atoi(optarg);
if ( S >= 4*MAXBLCKSZ/1024 )
SortMem = S;
}
}
break;
case 's':
@ -1385,7 +1407,7 @@ PostgresMain(int argc, char *argv[])
if (IsUnderPostmaster == false)
{
puts("\nPOSTGRES backend interactive interface");
puts("$Revision: 1.46 $ $Date: 1997/09/15 14:28:16 $");
puts("$Revision: 1.47 $ $Date: 1997/09/18 05:19:17 $");
}
/* ----------------