role="catalog_table_entry"><para role="column_definition">
       <structfield>stats_reset</structfield> <type>timestamp with time zone</type>
      </para>
      <para>
       Time at which these statistics were last reset
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>

 </sect2>

 <sect2 id="monitoring-pg-stat-checkpointer-view">
  <title><structname>pg_stat_checkpointer</structname></title>

  <indexterm>
   <primary>pg_stat_checkpointer</primary>
  </indexterm>

  <para>
   The <structname>pg_stat_checkpointer</structname> view will always have a
   single row, containing data about the checkpointer process of the cluster.
  </para>

  <table id="pg-stat-checkpointer-view" xreflabel="pg_stat_checkpointer">
   <title><structname>pg_stat_checkpointer</structname> View</title>
   <tgroup cols="1">
    <thead>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       Column Type
      </para>
      <para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>num_timed</structfield> <type>bigint</type>
      </para>
      <para>
       Number of scheduled checkpoints due to timeout
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>num_requested</structfield> <type>bigint</type>
      </para>
      <para>
       Number of requested checkpoints
      </para></entry>
     </row>

      <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>num_done</structfield> <type>bigint</type>
      </para>
      <para>
       Number of checkpoints that have been performed
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>restartpoints_timed</structfield> <type>bigint</type>
      </para>
      <para>
       Number of scheduled restartpoints due to timeout or after a failed attempt to perform it
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>restartpoints_req</structfield> <type>bigint</type>
      </para>
      <para>
       Number of requested restartpoints
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>restartpoints_done</structfield> <type>bigint</type>
      </para>
      <para>
       Number of restartpoints that have been performed
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>write_time</structfield> <type>double precision</type>
      </para>
      <para>
       Total amount of time that has been spent in the portion of
       processing checkpoints and restartpoints where files are written to disk,
       in milliseconds
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>sync_time</structfield> <type>double precision</type>
      </para>
      <para>
       Total amount of time that has been spent in the portion of
       processing checkpoints and restartpoints where files are synchronized to
       disk, in milliseconds
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>buffers_written</structfield> <type>bigint</type>
      </para>
      <para>
       Number of shared buffers written during checkpoints and restartpoints
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
        <structfield>slru_written</structfield> <type>bigint</type>
      </para>
      <para>
        Number of SLRU buffers written during checkpoints and restartpoints