PostgreSQL 19 ← 18Catalog added
← Catalog atlas / pg_dsm_registry_allocations
SYSTEM VIEW · System view
pg_dsm_registry_allocations
The pg_dsm_registry_allocations view shows shared memory allocations tracked in the dynamic shared memory (DSM) registry. This includes memory allocated by extensions using the mechanisms detailed in Section 36.10.11.2.
Checked column by column against a PostgreSQL 19beta3 instance · Raw measurement record ↗
Columns PostgreSQL 19
pg_dsm_registry_allocationsPostgreSQL 19 beta 3 is a preview snapshot; the structure can still change before release.
| COLUMN | TYPE | DESCRIPTION |
|---|---|---|
name |
text |
The name of the allocation in the DSM registry. |
type |
text |
The type of allocation. Possible values are segment, area, and hash, which correspond to dynamic shared memory segments, areas, and hash tables, respectively. |
size |
bigintDocumented as:int8 |
Size of the allocation in bytes. NULL for entries that failed initialization. |
Columns marked "implicit" are not included in SELECT *; some early statistics views are completed from same-version source, and the extra provenance is shown in the column description.
Common system columns 0
System attributes PostgreSQL provides, normally not expanded by SELECT *. Kept separately so they are not mixed in with ordinary columns.
| Columns | Type | attnum |
|---|
Column evolution matrix
Hover a cell for the column typePresentAdded / type or attribute changeRemoved
| COLUMN | 9.0 | 9.1 | 9.2 | 9.3 | 9.4 | 9.5 | 9.6 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
name |
– | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
type |
– | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
size |
– | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
9.0 is the coverage baseline; a column already present in the baseline is not marked as added. The matrix aligns columns by name, so a rename appears as the old column removed and a new column added.
Evolution timeline
Changes between adjacent majorsCompare any two versions
Pick two versions to see added, removed, and retyped columns. The interactive comparison needs JavaScript; the evolution timeline reads fine without it.