From 7bae3bbf62d63cdd49ae4ca4a851cef0cdbe6ab5 Mon Sep 17 00:00:00 2001
From: Thomas Munro <tmunro@postgresql.org>
Date: Thu, 14 Jul 2022 22:52:13 +1200
Subject: Create a distinct wait event for POSIX DSM allocation.

Previously we displayed "DSMFillZeroWrite" while in posix_fallocate(),
because we shared the same wait event for "mmap" and "posix" DSM types.
Let's introduce a new wait event "DSMAllocate", to be more accurate.

Reported-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/20220711174518.yldckniicknsxgzl%40awork3.anarazel.de
---
 doc/src/sgml/monitoring.sgml | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'doc/src')

diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index 4549c2560e3..f2066e5f0f5 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -1296,6 +1296,11 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
       <entry><literal>CopyFileWrite</literal></entry>
       <entry>Waiting for a write during a file copy operation.</entry>
      </row>
+     <row>
+      <entry><literal>DSMAllocate</literal></entry>
+      <entry>Waiting for a dynamic shared memory segment to be
+       allocated.</entry>
+     </row>
      <row>
       <entry><literal>DSMFillZeroWrite</literal></entry>
       <entry>Waiting to fill a dynamic shared memory backing file with
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