Re: Re: SOMAXCONN (was Re: Solaris source code)

mlw <markw@mohawksoft.com> writes:
> Nathan Myers wrote:
>> But using SOMAXCONN blindly is always wrong; that is often 5, which
>> is demonstrably too small.

> It is rumored that many BSD version are limited to 5.

BSD systems tend to claim SOMAXCONN = 5 in the header files, but *not*
to have such a small limit in the kernel.  The real step forward that
we have made in this discussion is to realize that we cannot trust
<sys/socket.h> to tell us what the kernel limit actually is.

> Passing listen(5) would probably be sufficient for Postgres.

It demonstrably is not sufficient.  Set it that way in pqcomm.c
and run the parallel regression tests.  Watch them fail.
        regards, tom lane