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| author | Jeff Davis <jdavis@postgresql.org> | 2025-03-24 22:05:33 -0700 |
|---|---|---|
| committer | Jeff Davis <jdavis@postgresql.org> | 2025-03-24 22:05:33 -0700 |
| commit | cc721c459d3783bbdb4beb1bbfa802a5328d15a2 (patch) | |
| tree | bdc6fd24da625fd7d96a40a59b08f241ae6208fe /src/include/nodes/execnodes.h | |
| parent | cc4331605ad81ad3040704470ff56904624eef75 (diff) | |
| download | postgresql-cc721c459d3783bbdb4beb1bbfa802a5328d15a2.tar.gz postgresql-cc721c459d3783bbdb4beb1bbfa802a5328d15a2.zip | |
HashAgg: use Bump allocator for hash TupleHashTable entries.
The entries aren't freed until the entire hash table is destroyed, so
use the Bump allocator to improve allocation speed, avoid wasting
space on the chunk header, and avoid wasting space due to the
power-of-two allocations.
Discussion: https://postgr.es/m/CAApHDvqv1aNB4cM36FzRwivXrEvBO_LsG_eQ3nqDXTjECaatOQ@mail.gmail.com
Reviewed-by: David Rowley
Diffstat (limited to 'src/include/nodes/execnodes.h')
| -rw-r--r-- | src/include/nodes/execnodes.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h index d4d4e655180..b5539ddb41e 100644 --- a/src/include/nodes/execnodes.h +++ b/src/include/nodes/execnodes.h @@ -2560,7 +2560,8 @@ typedef struct AggState /* these fields are used in AGG_HASHED and AGG_MIXED modes: */ bool table_filled; /* hash table filled yet? */ int num_hashes; - MemoryContext hash_metacxt; /* memory for hash table itself */ + MemoryContext hash_metacxt; /* memory for hash table bucket array */ + MemoryContext hash_tablecxt; /* memory for hash table entries */ struct LogicalTapeSet *hash_tapeset; /* tape set for hash spill tapes */ struct HashAggSpill *hash_spills; /* HashAggSpill for each grouping set, * exists only during first pass */ @@ -2586,7 +2587,7 @@ typedef struct AggState * per-group pointers */ /* support for evaluation of agg input expressions: */ -#define FIELDNO_AGGSTATE_ALL_PERGROUPS 53 +#define FIELDNO_AGGSTATE_ALL_PERGROUPS 54 AggStatePerGroup *all_pergroups; /* array of first ->pergroups, than * ->hash_pergroup */ SharedAggInfo *shared_info; /* one entry per worker */ |