Re: [RFC] Should "SHOW huge_pages" display the effective value "off" when the huge page is unavailable?

On Mon, Feb 6, 2017 at 4:01 PM, Tsunakawa, Takayuki
<tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com> wrote:
> Hello, all
>
> Could you give me your opinions on whether the SHOW command should display the effective value or the specified value for huge_pages? During the review of "Supporting huge_pages on Windows", which is now shifted to CommitFest 2017-3, Magnus gave me a comment that the huge_page variable should retain the value "try" when the huge page is not available on the machine and the server falls back to huge_page=off. The Linux version does so.
>
> I don't have a strong opinion on that, but I think a bit that it would be better to reflect the effective setting, i.e. SHOW displays huge_pages as off, not try.

Not sure if this is best way to do that, but I agree that it's helpful if
we can see whether the server actually uses huge page or not in
huge_page=try case.

Regards,

--
Fujii Masao