Christian Kruse <cjk+postgres(at)defunct(dot)ch> writes:
> I created a patch which implements MAP_HUGETLB for sysv shared memory segments
> (PGSharedMemoryCreate). It is based on tests of Tom Lane and Andres Freund, I
> added error handling, huge page size detection and a GUC variable.
My recollection is we'd decided not to pursue that because of fears that
it could make performance horribly worse on some platforms.
regards, tom lane