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doc: Fix descriptions of some PGC_POSTMASTER parameters.

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The following parameters can only be set at server start because
their context is PGC_POSTMASTER, but this information was missing
or incorrectly documented. This commit adds or corrects
that information for the following parameters:

* debug_io_direct
* dynamic_shared_memory_type
* event_source
* huge_pages
* io_max_combine_limit
* max_notify_queue_pages
* shared_memory_type
* track_commit_timestamp
* wal_decode_buffer_size

Backpatched to all supported branches.

Author: Karina Litskevich <litskevichkarina@gmail.com>
Reviewed-by: Chao Li <lic@highgo.com>
Reviewed-by: Fujii Masao <masao.fujii@gmail.com>
Discussion: https://postgr.es/m/CAHGQGwGfPzcin-_6XwPgVbWTOUFVZgHF5g9ROrwLUdCTfjy=0A@mail.gmail.com
Backpatch-through: 13
This commit is contained in:
Fujii Masao
2025-11-07 14:58:53 +09:00
parent 20bafb0972
commit 2dfda09ad7
1 changed files with 8 additions and 6 deletions
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14
doc/src/sgml/config.sgml
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@@ -1562,7 +1562,8 @@ include_dir 'conf.d'
<para>
Controls whether huge pages are requested for the main shared memory
area. Valid values are <literal>try</literal> (the default),
<literal>on</literal>, and <literal>off</literal>. With
<literal>on</literal>, and <literal>off</literal>.
This parameter can only be set at server start. With
<varname>huge_pages</varname> set to <literal>try</literal>, the
server will try to request huge pages, but fall back to the default if
that fails. With <literal>on</literal>, failure to request huge pages
@@ -1889,6 +1890,7 @@ include_dir 'conf.d'
platform, is generally discouraged because it typically requires
non-default kernel settings to allow for large allocations (see <xref
linkend="sysvipc"/>).
This parameter can only be set at server start.
</para>
</listitem>
</varlistentry>
@@ -1916,6 +1918,7 @@ include_dir 'conf.d'
however, it may be useful for debugging, when the
<literal>pg_dynshmem</literal> directory is stored on a RAM disk, or when
other shared memory facilities are not available.
This parameter can only be set at server start.
</para>
</listitem>
</varlistentry>
@@ -4038,9 +4041,9 @@ restore_command = 'copy "C:\\server\\archivedir\\%f" "%p"' # Windows
</term>
<listitem>
<para>
Record commit time of transactions. This parameter
can only be set in <filename>postgresql.conf</filename> file or on the server
command line. The default value is <literal>off</literal>.
Record commit time of transactions.
This parameter can only be set at server start.
The default value is <literal>off</literal>.
</para>
</listitem>
</varlistentry>
@@ -6216,8 +6219,7 @@ local0.* /var/log/postgresql
determines the program name used to identify
<productname>PostgreSQL</productname> messages in
the log. The default is <literal>PostgreSQL</literal>.
This parameter can only be set in the <filename>postgresql.conf</filename>
file or on the server command line.
This parameter can only be set at server start.
</para>
</listitem>
</varlistentry>