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Diffstat (limited to 'doc/src/sgml/config.sgml')
| -rw-r--r-- | doc/src/sgml/config.sgml | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 0075a1ee0d0..76af829d2d7 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -1459,7 +1459,11 @@ SET ENABLE_SEQSCAN TO OFF; <para> Not all of these choices are available on all platforms. The default is the first method in the above list that is supported - by the platform. + by the platform. The default is not necessarily best; it may be + necessary to change this setting, or other aspects of your system + configuration, in order to create a crash-safe configuration, as + discussed in <xref linkend="wal-reliability">, or to achieve best + performance. The <literal>open_</>* options also use <literal>O_DIRECT</> if available. This parameter can only be set in the <filename>postgresql.conf</> file or on the server command line. |