"Ed L." <pgsql@bluepolka.net> writes:
> Postmaster is totally
> unresponsive to SIGTERM, SIGINT, and SIGQUIT (sigkill is the
> only thing that shuts it down).
gdb backtrace definitely sounds like a good idea. Also it might be
interesting to see the results of strace of the postmaster while hitting
it with signals. Find out if it's doing anything at all in response ...
regards, tom lane