diff --git a/doc/src/sgml/perform.sgml b/doc/src/sgml/perform.sgml index 6928f1d853e08ab0ab4af965b6c8afa44f6ce7d9..2e42d020e420fe596ddcd7ad8c120e40863d7993 100644 --- a/doc/src/sgml/perform.sgml +++ b/doc/src/sgml/perform.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.24 2003/01/25 23:10:27 tgl Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.25 2003/01/27 22:40:56 momjian Exp $ --> <chapter id="performance-tips"> @@ -109,8 +109,8 @@ regression=# EXPLAIN SELECT * FROM tenk1; SELECT * FROM pg_class WHERE relname = 'tenk1'; </programlisting> - you will find out that <classname>tenk1</classname> has 233 disk - pages and 10000 rows. So the cost is estimated at 233 page + you will find out that <classname>tenk1</classname> has 333 disk + pages and 10000 rows. So the cost is estimated at 333 page reads, defined as costing 1.0 apiece, plus 10000 * <varname>cpu_tuple_cost</varname> which is currently 0.01 (try <command>SHOW cpu_tuple_cost</command>). </para>