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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2008-09-30 10:52:14 +0000 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2008-09-30 10:52:14 +0000 |
| commit | 15c121b3ed7eb2f290e19533e41ccca734d23574 (patch) | |
| tree | b60226d720f87b82b5b44647e3d3031081cdfb07 /src/include/utils/rel.h | |
| parent | 2dbc0ca937f8ba9c76866a99fd04866232acea95 (diff) | |
| download | postgresql-15c121b3ed7eb2f290e19533e41ccca734d23574.tar.gz | |
Rewrite the FSM. Instead of relying on a fixed-size shared memory segment, the
free space information is stored in a dedicated FSM relation fork, with each
relation (except for hash indexes; they don't use FSM).
This eliminates the max_fsm_relations and max_fsm_pages GUC options; remove any
trace of them from the backend, initdb, and documentation.
Rewrite contrib/pg_freespacemap to match the new FSM implementation. Also
introduce a new variant of the get_raw_page(regclass, int4, int4) function in
contrib/pageinspect that let's you to return pages from any relation fork, and
a new fsm_page_contents() function to inspect the new FSM pages.
Diffstat (limited to 'src/include/utils/rel.h')
| -rw-r--r-- | src/include/utils/rel.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/include/utils/rel.h b/src/include/utils/rel.h index 0d9d75dd8b..71ad936d27 100644 --- a/src/include/utils/rel.h +++ b/src/include/utils/rel.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.107 2008/06/19 00:46:06 alvherre Exp $ + * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.108 2008/09/30 10:52:14 heikki Exp $ * *------------------------------------------------------------------------- */ @@ -195,6 +195,9 @@ typedef struct RelationData List *rd_indpred; /* index predicate tree, if any */ void *rd_amcache; /* available for use by index AM */ + /* Cached last-seen size of the FSM */ + BlockNumber rd_fsm_nblocks_cache; + /* use "struct" here to avoid needing to include pgstat.h: */ struct PgStat_TableStatus *pgstat_info; /* statistics collection area */ } RelationData; |