Adjust display of actual runtimes in EXPLAIN output to use three fractional

digits, and label it 'ms' not 'msec', for consistency with psql's \timing
display.  Per recent discussions.

doc/src/sgml/perform.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.34 2003/10/10 02:08:42 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.35 2003/10/17 01:14:26 tgl Exp $
 -->
 
  <chapter id="performance-tips">
@@ -284,16 +284,16 @@ EXPLAIN ANALYZE SELECT * FROM tenk1 t1, tenk2 t2 WHERE t1.unique1 &lt; 50 AND t1
                                    QUERY PLAN
 -------------------------------------------------------------------------------
  Nested Loop  (cost=0.00..327.02 rows=49 width=296)
-                                 (actual time=1.18..29.82 rows=50 loops=1)
+                                 (actual time=1.181..29.822 rows=50 loops=1)
    -&gt;  Index Scan using tenk1_unique1 on tenk1 t1
                   (cost=0.00..179.33 rows=49 width=148)
-                                 (actual time=0.63..8.91 rows=50 loops=1)
+                                 (actual time=0.630..8.917 rows=50 loops=1)
          Index Cond: (unique1 &lt; 50)
    -&gt;  Index Scan using tenk2_unique2 on tenk2 t2
                   (cost=0.00..3.01 rows=1 width=148)
-                                 (actual time=0.29..0.32 rows=1 loops=50)
+                                 (actual time=0.295..0.324 rows=1 loops=50)
          Index Cond: ("outer".unique2 = t2.unique2)
- Total runtime: 31.60 msec
+ Total runtime: 31.604 ms
 </screen>
 
     Note that the <quote>actual time</quote> values are in milliseconds of

doc/src/sgml/ref/explain.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/explain.sgml,v 1.30 2003/09/12 00:12:47 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/explain.sgml,v 1.31 2003/10/17 01:14:26 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -210,10 +210,10 @@ EXPLAIN ANALYZE EXECUTE query(100, 200);
 
                                                        QUERY PLAN                                                        
 -------------------------------------------------------------------------------------------------------------------------
- HashAggregate  (cost=39.53..39.53 rows=1 width=8) (actual time=0.66..0.67 rows=7 loops=1)
-   -&gt;  Index Scan using test_pkey on test  (cost=0.00..32.97 rows=1311 width=8) (actual time=0.05..0.39 rows=99 loops=1)
+ HashAggregate  (cost=39.53..39.53 rows=1 width=8) (actual time=0.661..0.672 rows=7 loops=1)
+   -&gt;  Index Scan using test_pkey on test  (cost=0.00..32.97 rows=1311 width=8) (actual time=0.050..0.395 rows=99 loops=1)
          Index Cond: ((id &gt; $1) AND (id &lt; $2))
- Total runtime: 0.85 msec
+ Total runtime: 0.851 ms
 (4 rows)
 </programlisting>
   </para>

src/backend/commands/explain.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994-5, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.116 2003/09/25 18:58:35 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.117 2003/10/17 01:14:26 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -270,7 +270,7 @@ ExplainOnePlan(QueryDesc *queryDesc, ExplainStmt *stmt,
 	if (es->printCost)
 	{
 		if (stmt->analyze)
-			appendStringInfo(str, "Total runtime: %.2f msec\n",
+			appendStringInfo(str, "Total runtime: %.3f ms\n",
 							 1000.0 * totaltime);
 		do_text_output_multiline(tstate, str->data);
 	}
@@ -582,7 +582,7 @@ explain_outNode(StringInfo str,
 		{
 			double		nloops = planstate->instrument->nloops;
 
-			appendStringInfo(str, " (actual time=%.2f..%.2f rows=%.0f loops=%.0f)",
+			appendStringInfo(str, " (actual time=%.3f..%.3f rows=%.0f loops=%.0f)",
 						1000.0 * planstate->instrument->startup / nloops,
 						  1000.0 * planstate->instrument->total / nloops,
 							 planstate->instrument->ntuples / nloops,