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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-27 23:31:40 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-06-27 23:31:40 +0000 |
| commit | e0c9301c87634f21c0a7c6305bdc6da15d6ba375 (patch) | |
| tree | aad976ca0197137c3461ff19a3d0e155487f7b44 /doc/src | |
| parent | b559382134a52bbe1d79d465afd89c8385f88581 (diff) | |
| download | postgresql-e0c9301c87634f21c0a7c6305bdc6da15d6ba375.tar.gz postgresql-e0c9301c87634f21c0a7c6305bdc6da15d6ba375.zip | |
Install infrastructure for shared-memory free space map. Doesn't actually
do anything yet, but it has the necessary connections to initialization
and so forth. Make some gestures towards allowing number of blocks in
a relation to be BlockNumber, ie, unsigned int, rather than signed int.
(I doubt I got all the places that are sloppy about it, yet.) On the
way, replace the hardwired NLOCKS_PER_XACT fudge factor with a GUC
variable.
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/runtime.sgml | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml index 53add130cb1..d39d2d5d76f 100644 --- a/doc/src/sgml/runtime.sgml +++ b/doc/src/sgml/runtime.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.69 2001/06/23 00:03:10 petere Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.70 2001/06/27 23:31:37 tgl Exp $ --> <Chapter Id="runtime"> @@ -1132,6 +1132,42 @@ dynamic_library_path = '/usr/local/lib:/home/my_project/lib:$libdir:$libdir/cont </varlistentry> <varlistentry> + <term>MAX_FSM_RELATIONS (<type>integer</type>)</term> + <listitem> + <para> + Sets the maximum number of relations (tables) for which free space + will be tracked in the shared free-space map. + The default is 100. This option can only be set at server start. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>MAX_FSM_PAGES (<type>integer</type>)</term> + <listitem> + <para> + Sets the maximum number of disk pages for which free space + will be tracked in the shared free-space map. + The default is 10000. This option can only be set at server start. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>MAX_LOCKS_PER_XACT (<type>integer</type>)</term> + <listitem> + <para> + The shared lock table is sized on the assumption that at most + max_locks_per_xact * max_connections distinct objects will need + to be locked at any one time. The default, 64, has historically + proven sufficient, but you might need to raise this value if you + have clients that touch many different tables in a single transaction. + This option can only be set at server start. + </para> + </listitem> + </varlistentry> + + <varlistentry> <term>PORT (<type>integer</type>)</term> <listitem> <para> |