=?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. If you can
replicate the problem on a modern kernel, somebody might be motivated
to look into it; but not on that platform. In any case it's very
unlikely that this is a Postgres problem rather than a kernel problem.
regards, tom lane