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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-06-25 18:29:49 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-06-25 18:29:49 +0000 |
| commit | 2924ca67475afa3cc3c1a814b170b61803caeee9 (patch) | |
| tree | cdd0ec65d32b2fba2bc8ab1bf4db414befb44c62 /src/include | |
| parent | f5940e7b345138d71d89547dd8e40af9f7532f83 (diff) | |
| download | postgresql-2924ca67475afa3cc3c1a814b170b61803caeee9.tar.gz postgresql-2924ca67475afa3cc3c1a814b170b61803caeee9.zip | |
Tweak dynahash.c to avoid wasting memory space in non-shared hash tables.
palloc() will normally round allocation requests up to the next power of 2,
so make dynahash choose allocation sizes that are as close to a power of 2
as possible.
Back-patch to 8.1 --- the problem exists further back, but a much larger
patch would be needed and it doesn't seem worth taking any risks.
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/utils/hsearch.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/include/utils/hsearch.h b/src/include/utils/hsearch.h index 97bab5b85b1..a89be514d90 100644 --- a/src/include/utils/hsearch.h +++ b/src/include/utils/hsearch.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/hsearch.h,v 1.42 2006/03/05 15:59:07 momjian Exp $ + * $PostgreSQL: pgsql/src/include/utils/hsearch.h,v 1.43 2006/06/25 18:29:49 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -156,8 +156,6 @@ typedef struct HASHCTL /* max_dsize value to indicate expansible directory */ #define NO_MAX_DSIZE (-1) -/* max number of hash elements allocated at once */ -#define HASHELEMENT_ALLOC_MAX (32) /* hash_search operations */ typedef enum |