Cleanup of min tuple size.

src/backend/catalog/index.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.80 1999/07/03 00:32:38 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.81 1999/07/07 09:27:25 momjian Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -57,8 +57,10 @@
 /*
  * macros used in guessing how many tuples are on a page.
  */
-#define AVG_TUPLE_SIZE MinTupleSize
-#define NTUPLES_PER_PAGE(natts) (BLCKSZ/((natts)*AVG_TUPLE_SIZE))
+#define AVG_ATTR_SIZE 8
+#define NTUPLES_PER_PAGE(natts) \
+	((BLCKSZ - MAXALIGN(sizeof (PageHeaderData))) / \
+	((natts) * AVG_ATTR_SIZE + MAXALIGN(sizeof(HeapTupleHeaderData))))
 
 /* non-export function prototypes */
 static Oid GetHeapRelationOid(char *heapRelationName, char *indexRelationName,

src/backend/optimizer/path/costsize.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/optimizer/path/costsize.c,v 1.39 1999/07/07 09:11:15 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/optimizer/path/costsize.c,v 1.40 1999/07/07 09:27:26 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */

src/include/optimizer/internal.h

@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: internal.h,v 1.20 1999/05/25 16:14:18 momjian Exp $
+ * $Id: internal.h,v 1.21 1999/07/07 09:27:28 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -27,7 +27,7 @@
  *		System-dependent tuning constants
  *
  */
-#define _CPU_PAGE_WEIGHT_  0.033/* CPU-heap-to-page cost weighting factor */
+#define _CPU_PAGE_WEIGHT_  0.033  /* CPU-heap-to-page cost weighting factor */
 #define _CPU_INDEX_PAGE_WEIGHT_ 0.017	/* CPU-index-to-page cost
 										 * weighting factor */
 #define _MAX_KEYS_	   INDEX_MAX_KEYS	/* maximum number of keys in an