git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/doc/src/sgml/perform.sgml b/doc/src/sgml/perform.sgml

index 2eaab4d0f0d28b793dcfdfb7d4de2bbb394b03c1..cdc96ac56bf8cad27d3b8e4165e80dd475e052e9 100644 (file)

--- a/doc/src/sgml/perform.sgml

+++ b/doc/src/sgml/perform.sgml

<!--

-$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.34 2003年10月10日 02:08:42 momjian Exp $

+$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.35 2003年10月17日 01:14:26 tgl Exp $

-->

<chapter id="performance-tips">

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

diff --git a/doc/src/sgml/ref/explain.sgml b/doc/src/sgml/ref/explain.sgml

index 754863881d00bfe95906118c65ddbc65713831f6..942dcf7bad825ecf05552e2335a1949396a9b318 100644 (file)

--- a/doc/src/sgml/ref/explain.sgml

+++ b/doc/src/sgml/ref/explain.sgml

<!--

-$Header: /cvsroot/pgsql/doc/src/sgml/ref/explain.sgml,v 1.30 2003年09月12日 00:12:47 tgl Exp $

+$Header: /cvsroot/pgsql/doc/src/sgml/ref/explain.sgml,v 1.31 2003年10月17日 01:14:26 tgl Exp $

PostgreSQL documentation

-->

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ドル) AND (id &lt; 2ドル))

- Total runtime: 0.85 msec

+ Total runtime: 0.851 ms

(4 rows)

</programlisting>

</para>

diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c

index eb73c91409b25b19798384a683d6dff18ca15df1..1b34b17585f70341d36c149dd4c73a856a948de4 100644 (file)

--- a/src/backend/commands/explain.c

+++ b/src/backend/commands/explain.c

* Portions Copyright (c) 1994-5, Regents of the University of California

*

* IDENTIFICATION

- * $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.116 2003年09月25日 18:58:35 tgl Exp $

+ * $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.117 2003年10月17日 01:14:26 tgl Exp $

*

*-------------------------------------------------------------------------

*/

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);

}

{

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,