On 2018-05-04 12:46:40 -0400, Tom Lane wrote:
> =?utf-8?q?PG_Bug_reporting_form?= <noreply(at)postgresql(dot)org> writes:
> > Operating system: CentOS release 6.5
>
> > When use huge page, there may be a lot of hanged connections with status
> > startup or authentication state when multiple concurrent query operations
> > are performed.
>
> So don't do that. RHEL6 kernels are pretty ancient at this point,
> and are known to have performance issues with huge pages.
They're known to have perf issues with *transparent* huge pages, not
huge pages, right?
Chen, have you disabled transparent hugepages and zone reclaim?
Greetings,
Andres Freund