@@ -2012,7 +2012,7 @@ include_dir 'conf.d'
20122012 number of workers may not actually be available at runtime. If this
20132013 occurs, the plan will run with fewer workers than expected, which may
20142014 be inefficient. The default value is 2. Setting this value to 0
2015- disables parallel query.
2015+ disables parallel query execution .
20162016 </para>
20172017 </listitem>
20182018 </varlistentry>
@@ -3657,32 +3657,32 @@ include_dir 'conf.d'
36573657 </listitem>
36583658 </varlistentry>
36593659
3660- <varlistentry id="parallel-tuple -cost" xreflabel="parallel_tuple_cost ">
3661- <term><varname>parallel_tuple_cost </varname> (<type>floating point</type>)
3660+ <varlistentry id="guc- parallel-setup -cost" xreflabel="parallel_setup_cost ">
3661+ <term><varname>parallel_setup_cost </varname> (<type>floating point</type>)
36623662 <indexterm>
3663- <primary><varname>parallel_tuple_cost </> configuration parameter</primary>
3663+ <primary><varname>parallel_setup_cost </> configuration parameter</primary>
36643664 </indexterm>
36653665 </term>
36663666 <listitem>
36673667 <para>
3668- Sets the planner's estimate of the cost of transferring a tuple
3669- from a parallel worker process to another process .
3670- The default is 0.1 .
3668+ Sets the planner's estimate of the cost of launching parallel worker
3669+ processes .
3670+ The default is 1000 .
36713671 </para>
36723672 </listitem>
36733673 </varlistentry>
36743674
3675- <varlistentry id="parallel-setup -cost" xreflabel="parallel_setup_cost ">
3676- <term><varname>parallel_setup_cost </varname> (<type>floating point</type>)
3675+ <varlistentry id="guc- parallel-tuple -cost" xreflabel="parallel_tuple_cost ">
3676+ <term><varname>parallel_tuple_cost </varname> (<type>floating point</type>)
36773677 <indexterm>
3678- <primary><varname>parallel_setup_cost </> configuration parameter</primary>
3678+ <primary><varname>parallel_tuple_cost </> configuration parameter</primary>
36793679 </indexterm>
36803680 </term>
36813681 <listitem>
36823682 <para>
3683- Sets the planner's estimate of the cost of launching parallel worker
3684- processes .
3685- The default is 1000 .
3683+ Sets the planner's estimate of the cost of transferring one tuple
3684+ from a parallel worker process to another process .
3685+ The default is 0.1 .
36863686 </para>
36873687 </listitem>
36883688 </varlistentry>
@@ -4048,8 +4048,8 @@ SELECT * FROM parent WHERE key = 2400;
40484048 <literal>off</> (use parallel mode only when it is expected to improve
40494049 performance), <literal>on</> (force parallel query for all queries
40504050 for which it is thought to be safe), and <literal>regress</> (like
4051- on , but with additional behavior changes to facilitate automated
4052- regression testing ).
4051+ <literal>on</> , but with additional behavior changes as explained
4052+ below ).
40534053 </para>
40544054
40554055 <para>
@@ -4067,14 +4067,14 @@ SELECT * FROM parent WHERE key = 2400;
40674067
40684068 <para>
40694069 Setting this value to <literal>regress</> has all of the same effects
4070- as setting it to <literal>on</> plus some additional effect that are
4070+ as setting it to <literal>on</> plus some additional effects that are
40714071 intended to facilitate automated regression testing. Normally,
4072- messages from a parallel worker are prefixed with a context line,
4073- but a setting of <literal>regress</> suppresses this to guarantee
4074- reproducible results. Also, the <literal>Gather</> nodes added to
4075- plans by this setting are hidden from the <literal>EXPLAIN</> output
4076- so that the output matches what would be obtained if this setting
4077- were turned <literal>off</>.
4072+ messages from a parallel worker include a context line indicating that ,
4073+ but a setting of <literal>regress</> suppresses this line so that the
4074+ output is the same as in non-parallel execution. Also,
4075+ the <literal>Gather</> nodes added to plans by this setting are hidden
4076+ in <literal>EXPLAIN</> output so that the output matches what
4077+ would be obtained if this setting were turned <literal>off</>.
40784078 </para>
40794079 </listitem>
40804080 </varlistentry>
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