diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/storage.sgml | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/doc/src/sgml/storage.sgml b/doc/src/sgml/storage.sgml index 8ef2ac80106..cbdad0c3fb5 100644 --- a/doc/src/sgml/storage.sgml +++ b/doc/src/sgml/storage.sgml @@ -590,12 +590,13 @@ tuple would otherwise be too big. <indexterm><primary>FSM</primary><see>Free Space Map</see></indexterm> <para> -Each heap and index relation, except for hash indexes, has a Free Space Map -(FSM) to keep track of available space in the relation. It's stored -alongside the main relation data in a separate relation fork, named after the -filenode number of the relation, plus a <literal>_fsm</literal> suffix. For example, -if the filenode of a relation is 12345, the FSM is stored in a file called -<filename>12345_fsm</filename>, in the same directory as the main relation file. +Each heap relation, unless it is very small, and each index relation, except +for hash indexes, has a Free Space Map (FSM) to keep track of available +space in the relation. It's stored alongside the main relation data in a +separate relation fork, named after the filenode number of the relation, plus +a <literal>_fsm</literal> suffix. For example, if the filenode of a relation +is 12345, the FSM is stored in a file called <filename>12345_fsm</filename>, +in the same directory as the main relation file. </para> <para> |