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Add support for pg_stat_reset_slru without argument

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pg_stat_reset_slru currently requires an input argument, either:
- NULL to reset the SLRU counters of everything.
- A specific value to reset a single SLRU cache.

This commit adds support for a new pattern: pg_stat_reset_slru without
any argument works the same way as pg_stat_reset_slru(NULL), relying on
a DEFAULT in the function definition to handle this case.  This makes
the function more consistent with 23c8c0c8f4.

Bump catalog version.

Author: Bharath Rupireddy
Reviewed-by: Atsushi Torikoshi
Discussion: https://postgr.es/m/CALj2ACW1VizYg01EeH_cA-7qA+4NzWVAoZ5Lw9_XYO1RRHAZbA@mail.gmail.com
This commit is contained in:
Michael Paquier
2023-11-14 09:50:52 +09:00
parent a70f2a57f2
commit e5cca6288a
6 changed files with 16 additions and 7 deletions
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7
doc/src/sgml/monitoring.sgml
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@ -4781,14 +4781,15 @@ description | Waiting for a newly initialized WAL file to reach durable storage
<indexterm>
<primary>pg_stat_reset_slru</primary>
</indexterm>
<function>pg_stat_reset_slru</function> ( <type>text</type> )
<function>pg_stat_reset_slru</function> ( [ <parameter>target</parameter> <type>text</type> <literal>DEFAULT</literal> <literal>NULL</literal> ] )
<returnvalue>void</returnvalue>
</para>
<para>
Resets statistics to zero for a single SLRU cache, or for all SLRUs in
the cluster. If the argument is NULL, all counters shown in
the cluster. If <parameter>target</parameter> is
<literal>NULL</literal> or is not specified, all the counters shown in
the <structname>pg_stat_slru</structname> view for all SLRU caches are
reset. The argument can be one of
reset. The argument can be one of
<literal>CommitTs</literal>,
<literal>MultiXactMember</literal>,
<literal>MultiXactOffset</literal>,