* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/mmgr/portalmem.c,v 1.74 2004/10/12 01:50:04 neilc Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/mmgr/portalmem.c,v 1.75 2004/11/21 22:48:01 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "utils/portal.h"
/*
- * estimate of the maximum number of open portals a user would have,
- * used in initially sizing the PortalHashTable in EnablePortalManager()
+ * Estimate of the maximum number of open portals a user would have,
+ * used in initially sizing the PortalHashTable in EnablePortalManager().
+ * Since the hash table can expand, there's no need to make this overly
+ * generous, and keeping it small avoids unnecessary overhead in the
+ * hash_seq_search() calls executed during transaction end.
*/
-#define PORTALS_PER_USER 64
+#define PORTALS_PER_USER 16
/* ----------------