Hi,

While reading the documentation of pg_shmem_allocations, I noticed that the
off column is described as such :

"The offset at which the allocation starts. NULL for anonymous allocations
and unused memory."

Whereas, the view returns a value for unused memory:

[local]:5433 postgres@postgres=# SELECT * FROM pg_shmem_allocations WHERE
name IS NULL;
 name |    off    |  size   | allocated_size
------+-----------+---------+----------------
 ¤    | 178095232 | 1923968 |        1923968
(1 row)

>From what I understand, the doc is wrong.
Am I right ?

Benoit

[1] https://www.postgresql.org/docs/13/view-pg-shmem-allocations.html
[2]
https://www.postgresql.org/message-id/flat/20140504114417.GM12715%40awork2.anarazel.de
(original thread)

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