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Add target "slru" to pg_stat_reset_shared()

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Currently, pg_stat_reset_shared() cannot reset the counters in the view
pg_stat_slru even if it is a type of shared stats.  This patch adds
support for a new value in pg_stat_reset_shared(), called "slru", able
to do that.  Note that pg_stat_reset_shared(NULL) also resets SLRU
counters.

There may be a point in removing pg_stat_reset_slru() that was
introduced in 28cac71bd3 (v13~) as the new option overlaps with this
function, but we would lose the ability to reset individual SLRU
counters.  This is left for future reconsideration.

Author: Atsushi Torikoshi
Discussion: https://postgr.es/m/e3c25d72e81378e7b64f3c52e0306fc9@oss.nttdata.com
This commit is contained in:
Michael Paquier
2023-11-16 15:41:34 +09:00
parent 816f10564a
commit 2e8a0edc2a
4 changed files with 39 additions and 2 deletions
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6
doc/src/sgml/monitoring.sgml
View File

@ -4749,6 +4749,12 @@ description | Waiting for a newly initialized WAL file to reach durable storage
the <structname>pg_stat_recovery_prefetch</structname> view.
</para>
</listitem>
<listitem>
<para>
<literal>slru</literal>: Reset all the counters shown in the
<structname>pg_stat_slru</structname> view.
</para>
</listitem>
<listitem>
<para>
<literal>wal</literal>: Reset all the counters shown in the