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Commitf056f75

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doc: Mention possible ephemeral discrepancies in pg_stat_activity
Ephemeral inconsistencies across multiple attributes of pg_stat_activitycan exist as the system is designed to be efficient with a low overhead.This question is raised by users from time to time based on the dataread in the view, so let's add a note in the docs about thispossibility.Author: Alex Friedman <alexf01@gmail.com>Reviewed-by: Sami Imseih <samimseih@gmail.com>Discussion:https://postgr.es/m/8a275154-a654-44b0-ab37-197802f04c7b@gmail.com
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‎doc/src/sgml/monitoring.sgml

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@@ -1022,7 +1022,9 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
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it may or may not be <literal>waiting</literal> on some event. If the state
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is <literal>active</literal> and <structfield>wait_event</structfield> is non-null, it
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means that a query is being executed, but is being blocked somewhere
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in the system.
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in the system. To keep the reporting overhead low, the system does not
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attempt to synchronize different aspects of activity data for a backend.
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As a result, ephemeral discrepancies may exist between the view's columns.
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</para>
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</note>
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