diff options
| -rw-r--r-- | doc/src/sgml/config.sgml | 5 | ||||
| -rw-r--r-- | doc/src/sgml/monitoring.sgml | 8 | ||||
| -rw-r--r-- | doc/src/sgml/wal.sgml | 2 |
3 files changed, 7 insertions, 8 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index ac533968a0c..c2c7a95a828 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -3685,8 +3685,9 @@ include_dir 'conf.d' <para> Whether to try to prefetch blocks that are referenced in the WAL that are not yet in the buffer pool, during recovery. Valid values are - <literal>off</literal> (the default), <literal>on</literal> and - <literal>try</literal>. The setting <literal>try</literal> enables + <literal>off</literal>, <literal>on</literal> and + <literal>try</literal> (the default). The setting + <literal>try</literal> enables prefetching only if the operating system provides the <function>posix_fadvise</function> function, which is currently used to implement prefetching. Note that some operating systems provide the diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml index 76766d28dd4..8717df060e2 100644 --- a/doc/src/sgml/monitoring.sgml +++ b/doc/src/sgml/monitoring.sgml @@ -3049,11 +3049,9 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i <para> The <structname>pg_stat_recovery_prefetch</structname> view will contain - only one row. It is filled with nulls if recovery has not run or - <xref linkend="guc-recovery-prefetch"/> is not enabled. The - columns <structfield>wal_distance</structfield>, - <structfield>block_distance</structfield> - and <structfield>io_depth</structfield> show current values, and the + only one row. The columns <structfield>wal_distance</structfield>, + <structfield>block_distance</structfield> and + <structfield>io_depth</structfield> show current values, and the other columns show cumulative counters that can be reset with the <function>pg_stat_reset_shared</function> function. </para> diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml index 6b3406b7de6..4b6ef283c1c 100644 --- a/doc/src/sgml/wal.sgml +++ b/doc/src/sgml/wal.sgml @@ -812,7 +812,7 @@ The <xref linkend="guc-maintenance-io-concurrency"/> and <xref linkend="guc-wal-decode-buffer-size"/> settings limit prefetching concurrency and distance, respectively. By default, it is set to - <literal>try</literal>, which enabled the feature on systems where + <literal>try</literal>, which enables the feature on systems where <function>posix_fadvise</function> is available. </para> </sect1> |