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shared_memory_size_in_huge_pages
A preset configuration parameter reporting the number of huge pages needed
This entry relates to a PostgreSQL feature which is part of PostgreSQL 15, due to be released in late 2022.
shared_memory_size_in_huge_pages is a preset configuration parameter reporting the number of huge pages needed for the main shared memory area, based on the specified huge_page_size.
shared_memory_size_in_huge_pages was added in PostgreSQL 15.
Usage
On Linux systems, shared_memory_size_in_huge_pages is computed at runtime if huge pages are available.
If huge pages are not available, or on systems other than Linux, the reported value is always -1.
Change history
- PostgreSQL 15
- added (commit 43c1c4f6)
References
- PostgreSQL devel documentation: shared_memory_size_in_huge_pages
Categories
See also
shared_memory_size, huge_page, huge_page_size