Thanks a lot for your reply！
Oh,I see！
I will test this case in the rhel8.5（ RHEL 8.5 is the latest version of RHEL so far）
I will post my test result through this email。
At 2022-05-10 00:27:14, "Tom Lane" <tgl@sss.pgh.pa.us> wrote:
>"yanliang lei" <msdnchina@163.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
>
