database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

Add --parallel option to vacuumdb command.

Browse Source 
Commit 40d964ec99 allowed vacuum command to leverage multiple CPUs by
invoking parallel workers to process indexes.  This commit provides a
'--parallel' option to specify the parallel degree used by vacuum command.

Author: Masahiko Sawada, with few modifications by me
Reviewed-by: Mahendra Singh and Amit Kapila
Discussion: https://postgr.es/m/CAD21AoDTPMgzSkV4E3SFo1CH_x50bf5PqZFQf4jmqjk-C03BWg@mail.gmail.com
This commit is contained in:
Amit Kapila
2020-01-29 11:08:50 +05:30
parent 01d9676a53
commit 47bc9ced0d
3 changed files with 76 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
doc/src/sgml/ref/vacuumdb.sgml
View File

@ -226,6 +226,24 @@ PostgreSQL documentation
</listitem>
</varlistentry>
<varlistentry>
<term><option>-P <replaceable class="parameter">parallel_degree</replaceable></option></term>
<term><option>--parallel=<replaceable class="parameter">parallel_degree</replaceable></option></term>
<listitem>
<para>
Specify the parallel degree of <firstterm>parallel vacuum</firstterm>.
This allows the vacuum to leverage multiple CPUs to process indexes.
See <xref linkend="sql-vacuum"/>.
</para>
<note>
<para>
This option is only available for servers running
<productname>PostgreSQL</productname> 13 and later.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-q</option></term>
<term><option>--quiet</option></term>