<korryd(at)enterprisedb(dot)com> writes:
>> But in the new world of plugins there may be functional reasons for
>> wanting libraries to be loaded into backends --- and
>> shared_preload_libraries is not isomorphic to local_preload_libraries.
>> The permissions situation is different.
> And, shared_preload_libraries is processed (in the postmaster) before
> the shared-memory segment is created, so a shared_preload_library can
> call RequestAddinShmemSpace() and RequestAddinLWLocks(), but a
> local_preload_library cannot.
That doesn't seem like an issue though, since the copy in the postmaster
will have done that anyway.
regards, tom lane