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Commite820db5

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Improve documentation for pg_stat_checkpointer fields
pg_stat_checkpointer contains statistics for checkpoints and restartpoints.Before12915a5 documentation said only about checkpoints implying thatrestartpoint is the variation of checkpoint.12915a5 introducednew separate statistics fields for restartpoints. This commit explicitlydocuments fields that are relevant for both checkpoints and restartpoints.Reported-by: Magnus HaganderDiscussion:https://postgr.es/m/CABUevExav5-SR0x%2BG9kBUMV0G8XsvSUfuyyqmYBBJi6VHns6sw%40mail.gmail.comReviewed-by: Anton A. Melnikov
1 parentecb0fd3 commite820db5

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‎doc/src/sgml/monitoring.sgml

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@@ -3016,7 +3016,8 @@ description | Waiting for a newly initialized WAL file to reach durable storage
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</para>
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<para>
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Total amount of time that has been spent in the portion of
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checkpoint processing where files are written to disk, in milliseconds
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processing checkpoints and restartpoints where files are written to disk,
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in milliseconds
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</para></entry>
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</row>
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</para>
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<para>
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Total amount of time that has been spent in the portion of
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checkpointprocessing where files are synchronized to disk, in
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milliseconds
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processingcheckpoints and restartpointswhere files are synchronized to
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disk, inmilliseconds
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</para></entry>
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</row>
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@@ -3036,7 +3037,7 @@ description | Waiting for a newly initialized WAL file to reach durable storage
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<structfield>buffers_written</structfield> <type>bigint</type>
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</para>
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<para>
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Number of buffers written during checkpoints
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Number of buffers written during checkpoints and restartpoints
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</para></entry>
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</row>
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‎src/include/catalog/pg_proc.dat

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@@ -5737,7 +5737,7 @@
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proparallel => 'r', prorettype => 'int8', proargtypes => '',
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prosrc => 'pg_stat_get_checkpointer_restartpoints_performed' },
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{ oid => '2771',
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descr => 'statistics: number of buffers writtenby the checkpointer',
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descr => 'statistics: number of buffers writtenduring checkpoints and restartpoints',
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proname => 'pg_stat_get_checkpointer_buffers_written', provolatile => 's',
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proparallel => 'r', prorettype => 'int8', proargtypes => '',
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prosrc => 'pg_stat_get_checkpointer_buffers_written' },
@@ -5760,12 +5760,12 @@
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proparallel => 'r', prorettype => 'timestamptz', proargtypes => '',
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prosrc => 'pg_stat_get_bgwriter_stat_reset_time' },
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{ oid => '3160',
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descr => 'statistics: checkpoint time spent writing buffers to disk, in milliseconds',
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descr => 'statistics: checkpoint/restartpoint time spent writing buffers to disk, in milliseconds',
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proname => 'pg_stat_get_checkpointer_write_time', provolatile => 's',
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proparallel => 'r', prorettype => 'float8', proargtypes => '',
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prosrc => 'pg_stat_get_checkpointer_write_time' },
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{ oid => '3161',
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descr => 'statistics: checkpoint time spent synchronizing buffers to disk, in milliseconds',
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descr => 'statistics: checkpoint/restartpoint time spent synchronizing buffers to disk, in milliseconds',
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proname => 'pg_stat_get_checkpointer_sync_time', provolatile => 's',
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proparallel => 'r', prorettype => 'float8', proargtypes => '',
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prosrc => 'pg_stat_get_checkpointer_sync_time' },

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