Hi, On Monday 29 October 2012 16:33:25 Tom Lane wrote: > Christian Kruse <cjk+postg...@defunct.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.
This is why I created a GUC variable huge_tlb_pages = on|off|try to enable/disable this feature. A performance improvement up to 10% seems worth the trouble of setting another config value, IMO. Greetings, CK -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
