Re: Improve logging when using Huge Pages

On Tue, Sep 07, 2021 at 07:12:36PM +0900, Fujii Masao wrote:
> One big concern about the patch is that log message is always reported
> when shared memory fails to be allocated with huge pages enabled
> when huge_pages=try. Since huge_pages=try is the default setting,
> many users would see this new log message whenever they start
> the server. Those who don't need huge pages but just use the default
> setting might think that such log messages would be noisy.

I don't see this as any issue. We're only talking about a single message on
each restart, which would be added in a major release. If it's a problem, the
message could be a NOTICE or INFO, and it won't be shown by default.

I think it should say "with/out huge pages" without "enabled/disabled", without
"again", and without "The server", like:

+ (errmsg("could not map anonymous shared memory (%zu bytes)"
+ " with huge pages.", allocsize),
+ errdetail("Anonymous shared memory will be mapped "
+ "without huge pages.")));

--
Justin