Re: PostgreSQL14.2 can not start because of huge_page_size is equal to 1048576

"yanliang lei" <msdnchina(at)163(dot)com> writes:
> The DETAIL message says " huge_page_size must be 0", but you did not set huge_page_size to 0.
> ---huge_page_size is the pg14 new parameter£¬The default value of this parameter is zero (0). When set to 0, the default huge page size on the system will be used.
> in the pg 14 documents---¡®Non-default settings are currently supported only on Linux.¡¯ so £¬ I want to try to find a method to let PostgreSQL 14 to use non-default hugepagesize£¬

The code that's throwing the error says

/* Recent enough Linux only, for now. See GetHugePageSize(). */

I don't know what "recent enough" is in this context, but evidently
RHEL7 isn't it (no surprise considering that's a trailing-edge distro
at this point).

I don't find it surprising that the authors of this feature didn't
try to document exactly which Linux versions it can be used on.
Keeping such documentation accurate would be a nightmare.

regards, tom lane