https://www.postgresql.org/docs/15/runtime-config-resource.html#GUC-HUGE-PAGE-SIZE
the following is from the above website:
Some commonly available page sizes on modern 64 bit server architectures include:
2MB and 1GB (Intel and AMD), 16MB and 16GB (IBM POWER), and 64kB, 2MB, 32MB and 1GB (ARM). For more information about usage and support,
but after my test, I found that:
in the RHEL7.9(kernel version 3.10.0-1160),when I set the non default huge page size for huge_page_size parameter ,PG14 can not start；
in the RHEL8.5(kernel version 4.18.0-348),when I set the non default huge page size for huge_page_size parameter ,PG14 can start 。
so ,
I think that:
the huge_page_size parameter description in the PostgreSQL 14 documents is not exact.
I suggest that :
Some one should modify the postgreSQL 14 documents（https://www.postgresql.org/docs/15/runtime-config-resource.html#GUC-HUGE-PAGE-SIZE） like the following:
in the RHEL7.x (kernel version 3.10.0-xxx), huge_page_size parameter can not set to the non default huge page size.