diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 909b3e23c52..dce1daa73ae 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -2005,10 +2005,14 @@ include_dir 'conf.d' </term> <listitem> <para> - Sets the maximum degree of parallelism for an individual parallel - operation. Note that the requested number of workers may not actually - be available at runtime. Parallel workers are taken from the pool - of processes established by <xref linkend="guc-max-worker-processes">. + Sets the maximum number of workers that can be started for an + individual parallel operation. Parallel workers are taken from the + pool of processes established by + <xref linkend="guc-max-worker-processes">. Note that the requested + number of workers may not actually be available at runtime. If this + occurs, the plan will run with fewer workers than expected, which may + be inefficient. The default value is 2. Setting this value to 0 + disables parallel query. </para> </listitem> </varlistentry> |