Re: Patch fürMAP_HUGETLB for mmap() shared memory - Mailing list pgsql-hackers

Hi,

On 29/10/12 16:33, Tom Lane wrote:
> > 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.

This is why I created a GUC for turning this feature off.

Greetings,
 CK