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| -rw-r--r-- | doc/src/sgml/monitoring.sgml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml index 928a6eb64b0..71c4f96d054 100644 --- a/doc/src/sgml/monitoring.sgml +++ b/doc/src/sgml/monitoring.sgml @@ -2931,6 +2931,16 @@ description | Waiting for a newly initialized WAL file to reach durable storage </para> <para> + For the <varname>object</varname> <literal>wal</literal>, + <varname>fsyncs</varname> and <varname>fsync_time</varname> track the + fsync activity of WAL files done in <function>issue_xlog_fsync</function>. + <varname>writes</varname> and <varname>write_time</varname> + track the write activity of WAL files done in + <function>XLogWrite</function>. + See <xref linkend="wal-configuration"/> for more information. + </para> + + <para> <structname>pg_stat_io</structname> can be used to inform database tuning. For example: <itemizedlist> |