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Remove some unused and seldom used fields from RelationAmInfo.

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This saves some memory from each index relcache entry. At least on a 64-bit
machine, it saves just enough to shrink a typical relcache entry's memory
usage from 2k to 1k. That's nice if you have a lot of backends and a lot of
indexes.
This commit is contained in:
Heikki Linnakangas
2013-04-16 15:01:21 +03:00
parent c74d586d2f
commit 87ae9e7265
2 changed files with 15 additions and 14 deletions
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10
src/include/utils/rel.h
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@@ -47,8 +47,8 @@ typedef LockInfoData *LockInfo;
/*
* Cached lookup information for the index access method functions defined
* by the pg_am row associated with an index relation.
* Cached lookup information for the frequently used index access method
* functions, defined by the pg_am row associated with an index relation.
*/
typedef struct RelationAmInfo
{
@@ -60,13 +60,7 @@ typedef struct RelationAmInfo
FmgrInfo amendscan;
FmgrInfo ammarkpos;
FmgrInfo amrestrpos;
FmgrInfo ambuild;
FmgrInfo ambuildempty;
FmgrInfo ambulkdelete;
FmgrInfo amvacuumcleanup;
FmgrInfo amcanreturn;
FmgrInfo amcostestimate;
FmgrInfo amoptions;
} RelationAmInfo;