Re: pgsql: Add kqueue(2) support to the WaitEventSet API.

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> On 2020-Feb-24, Tom Lane wrote:
>> Why not just drive it off max_files_per_process?  On Unix, that
>> largely exists to override the ulimit setting anyway.  With no
>> comparable knob on a Windows system, we might as well just say
>> that's what you set.

> That makes sense to me -- but if we do that, then maybe we should be
> doing the setrlimit() dance on it too, on Linux^W^W where supported.

Yeah, arguably we could try to setrlimit if max_files_per_process is
larger than the ulimit.  We should definitely not reduce the ulimit
if max_files_per_process is smaller, though, since the DBA might
intentionally be leaving daylight for purposes such as FD-hungry PL
functions.  On the whole I'm inclined to leave well enough alone on
the Unix side --- there's nothing there that the DBA can't set if
she wishes.

            regards, tom lane