Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commitc0a9283

Browse files
committed
Rename collect_* options to more user-friendly names.
1 parent9e60c0f commitc0a9283

File tree

3 files changed

+94
-94
lines changed

3 files changed

+94
-94
lines changed

‎doc/src/sgml/runtime.sgml‎

Lines changed: 83 additions & 83 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.84 2001/09/21 20:31:43 tgl Exp $
2+
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.85 2001/09/23 21:52:36 petere Exp $
33
-->
44

55
<Chapter Id="runtime">
@@ -780,45 +780,6 @@ env PGOPTIONS='-c geqo=off' psql
780780

781781
<para>
782782
<variablelist>
783-
<varlistentry>
784-
<term><varname>COLLECT_STARTCOLLECTOR</varname> (<type>boolean</type>)</term>
785-
<listitem>
786-
<para>
787-
Controls whether the postmaster should start the statistics-collection
788-
subprocess. This is on by default, but may be turned off if you
789-
know you have no interest in collecting statistics. This option
790-
can only be set at postmaster start.
791-
</para>
792-
</listitem>
793-
</varlistentry>
794-
795-
<varlistentry>
796-
<term><varname>COLLECT_RESETONPMSTART</varname> (<type>boolean</type>)</term>
797-
<listitem>
798-
<para>
799-
If on, collected statistics are zeroed out whenever the postmaster
800-
is restarted. If off, statistics are accumulated across postmaster
801-
restarts. The default is on. This option
802-
can only be set at postmaster start.
803-
</para>
804-
</listitem>
805-
</varlistentry>
806-
807-
<varlistentry>
808-
<term><varname>COLLECT_QUERYSTRING</varname> (<type>boolean</type>)</term>
809-
<term><varname>COLLECT_BLOCKLEVEL</varname> (<type>boolean</type>)</term>
810-
<term><varname>COLLECT_TUPLELEVEL</varname> (<type>boolean</type>)</term>
811-
<listitem>
812-
<para>
813-
These flags determine what information backends send to the statistics
814-
collector process: current queries, block-level activity statistics,
815-
or tuple-level activity statistics. All default to off. Enabling
816-
statistics collection costs a small amount of time per query, but
817-
is invaluable for debugging and performance tuning.
818-
</para>
819-
</listitem>
820-
</varlistentry>
821-
822783
<varlistentry>
823784
<term><varname>DEBUG_ASSERTIONS</varname> (<type>boolean</type>)</term>
824785
<listitem>
@@ -940,6 +901,45 @@ env PGOPTIONS='-c geqo=off' psql
940901
</listitem>
941902
</varlistentry>
942903

904+
<varlistentry>
905+
<term><varname>STATS_COMMAND_STRING</varname> (<type>boolean</type>)</term>
906+
<term><varname>STATS_BLOCK_LEVEL</varname> (<type>boolean</type>)</term>
907+
<term><varname>STATS_ROW_LEVEL</varname> (<type>boolean</type>)</term>
908+
<listitem>
909+
<para>
910+
These flags determine what information backends send to the statistics
911+
collector process: current commands, block-level activity statistics,
912+
or row-level activity statistics. All default to off. Enabling
913+
statistics collection costs a small amount of time per query, but
914+
is invaluable for debugging and performance tuning.
915+
</para>
916+
</listitem>
917+
</varlistentry>
918+
919+
<varlistentry>
920+
<term><varname>STATS_RESET_ON_SERVER_START</varname> (<type>boolean</type>)</term>
921+
<listitem>
922+
<para>
923+
If on, collected statistics are zeroed out whenever the server
924+
is restarted. If off, statistics are accumulated across server
925+
restarts. The default is on. This option
926+
can only be set at server start.
927+
</para>
928+
</listitem>
929+
</varlistentry>
930+
931+
<varlistentry>
932+
<term><varname>STATS_START_COLLECTOR</varname> (<type>boolean</type>)</term>
933+
<listitem>
934+
<para>
935+
Controls whether the server should start the statistics-collection
936+
subprocess. This is on by default, but may be turned off if you
937+
know you have no interest in collecting statistics. This option
938+
can only be set at server start.
939+
</para>
940+
</listitem>
941+
</varlistentry>
942+
943943
<varlistentry>
944944
<term><varname>SYSLOG</varname> (<type>integer</type>)</term>
945945
<listitem>
@@ -1268,49 +1268,6 @@ dynamic_library_path = '/usr/local/lib/postgresql:/home/my_project/lib:$libdir'
12681268
</listitem>
12691269
</varlistentry>
12701270

1271-
<varlistentry>
1272-
<term><varname>TRANSFORM_NULL_EQUALS</varname> (<type>boolean</type>)</term>
1273-
<listitem>
1274-
<para>
1275-
When turned on, expressions of the form
1276-
<literal><replaceable>expr</> = NULL</literal> (or
1277-
<literal>NULL = <replaceable>expr</></literal>) are treated as
1278-
<literal><replaceable>expr</> IS NULL</literal>, that is, they
1279-
return true if <replaceable>expr</> evaluates to the NULL
1280-
value, and false otherwise. The correct behavior of
1281-
<literal><replaceable>expr</> = NULL</literal> is to always
1282-
return NULL (unknown). Therefore this option defaults to off.
1283-
</para>
1284-
1285-
<para>
1286-
However, filtered forms in <productname>Microsoft
1287-
Access</productname> generate queries that appear to use
1288-
<literal><replaceable>expr</> = NULL</literal> to test for
1289-
NULLs, so if you use that interface to access the database you
1290-
might want to turn this option on. Since expressions of the
1291-
form <literal><replaceable>expr</> = NULL</literal> always
1292-
return NULL (using the correct interpretation) they are not
1293-
very useful and do not appear often in normal applications, so
1294-
this option does little harm in practice. But new users are
1295-
frequently confused about the semantics of expressions
1296-
involving NULL, so we do not turn this option on by default.
1297-
</para>
1298-
1299-
<para>
1300-
Note that this option only affects the literal <literal>=</>
1301-
operator, not other comparison operators or other expressions
1302-
that are computationally equivalent to some expression
1303-
involving the equals operator (such as <literal>IN</literal>).
1304-
Thus, this option is not a general fix for bad programming.
1305-
</para>
1306-
1307-
<para>
1308-
Refer to the <citetitle>User's Guide</citetitle> for related
1309-
information.
1310-
</para>
1311-
</listitem>
1312-
</varlistentry>
1313-
13141271
<varlistentry>
13151272
<term><varname>PORT</varname> (<type>integer</type>)</term>
13161273
<listitem>
@@ -1408,6 +1365,49 @@ dynamic_library_path = '/usr/local/lib/postgresql:/home/my_project/lib:$libdir'
14081365
</listitem>
14091366
</varlistentry>
14101367

1368+
<varlistentry>
1369+
<term><varname>TRANSFORM_NULL_EQUALS</varname> (<type>boolean</type>)</term>
1370+
<listitem>
1371+
<para>
1372+
When turned on, expressions of the form
1373+
<literal><replaceable>expr</> = NULL</literal> (or
1374+
<literal>NULL = <replaceable>expr</></literal>) are treated as
1375+
<literal><replaceable>expr</> IS NULL</literal>, that is, they
1376+
return true if <replaceable>expr</> evaluates to the NULL
1377+
value, and false otherwise. The correct behavior of
1378+
<literal><replaceable>expr</> = NULL</literal> is to always
1379+
return NULL (unknown). Therefore this option defaults to off.
1380+
</para>
1381+
1382+
<para>
1383+
However, filtered forms in <productname>Microsoft
1384+
Access</productname> generate queries that appear to use
1385+
<literal><replaceable>expr</> = NULL</literal> to test for
1386+
NULLs, so if you use that interface to access the database you
1387+
might want to turn this option on. Since expressions of the
1388+
form <literal><replaceable>expr</> = NULL</literal> always
1389+
return NULL (using the correct interpretation) they are not
1390+
very useful and do not appear often in normal applications, so
1391+
this option does little harm in practice. But new users are
1392+
frequently confused about the semantics of expressions
1393+
involving NULL, so we do not turn this option on by default.
1394+
</para>
1395+
1396+
<para>
1397+
Note that this option only affects the literal <literal>=</>
1398+
operator, not other comparison operators or other expressions
1399+
that are computationally equivalent to some expression
1400+
involving the equals operator (such as <literal>IN</literal>).
1401+
Thus, this option is not a general fix for bad programming.
1402+
</para>
1403+
1404+
<para>
1405+
Refer to the <citetitle>User's Guide</citetitle> for related
1406+
information.
1407+
</para>
1408+
</listitem>
1409+
</varlistentry>
1410+
14111411
<varlistentry>
14121412
<term><varname>UNIX_SOCKET_DIRECTORY</varname> (<type>string</type>)</term>
14131413
<listitem>

‎src/backend/utils/misc/guc.c‎

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,7 @@
44
* Support for grand unified configuration scheme, including SET
55
* command, configuration file, and command line options.
66
*
7-
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.51 2001/09/21 17:06:12 tgl Exp $
7+
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.52 2001/09/23 21:52:36 petere Exp $
88
*
99
* Copyright 2000 by PostgreSQL Global Development Group
1010
* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -229,11 +229,11 @@ static struct config_bool
229229
{"show_btree_build_stats",PGC_SUSET,&Show_btree_build_stats, false,NULL},
230230
#endif
231231

232-
{"collect_startcollector",PGC_POSTMASTER,&pgstat_collect_startcollector, true,NULL},
233-
{"collect_resetonpmstart",PGC_POSTMASTER,&pgstat_collect_resetonpmstart, true,NULL},
234-
{"collect_querystring",PGC_SUSET,&pgstat_collect_querystring, false,NULL},
235-
{"collect_tuplelevel",PGC_SUSET,&pgstat_collect_tuplelevel, false,NULL},
236-
{"collect_blocklevel",PGC_SUSET,&pgstat_collect_blocklevel, false,NULL},
232+
{"stats_start_collector",PGC_POSTMASTER,&pgstat_collect_startcollector, true,NULL},
233+
{"stats_reset_on_server_start",PGC_POSTMASTER,&pgstat_collect_resetonpmstart, true,NULL},
234+
{"stats_command_string",PGC_SUSET,&pgstat_collect_querystring, false,NULL},
235+
{"stats_row_level",PGC_SUSET,&pgstat_collect_tuplelevel, false,NULL},
236+
{"stats_block_level",PGC_SUSET,&pgstat_collect_blocklevel, false,NULL},
237237

238238
{"trace_notify",PGC_USERSET,&Trace_notify, false,NULL},
239239

‎src/backend/utils/misc/postgresql.conf.sample‎

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -150,11 +150,11 @@
150150
#
151151
#Access statistics collection
152152
#
153-
#collect_startcollector = true
154-
#collect_resetonpmstart = true
155-
#collect_querystring = false
156-
#collect_tuplelevel = false
157-
#collect_blocklevel = false
153+
#stats_start_collector = true
154+
#stats_reset_on_server_start = true
155+
#stats_command_string = false
156+
#stats_row_level = false
157+
#stats_block_level = false
158158

159159

160160
#

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp