Michael Heaney <mheaney@xxxxxxxx> writes: > On 1/16/2015 6:58 PM, Tom Lane wrote: >> A quick look at the PG source code says that that message means that >> MAP_HUGETLB isn't defined. Our code is expecting <sys/mman.h> to provide >> that symbol, which it should do by default according to what I can see on >> my RHEL 6.6 box. Perhaps you've defined some of the feature restriction >> macros like _POSIX_SOURCE? > Thanks for the helpful clue, Tom. I haven't knowingly defined > _POSIX_SOURCE or any other macros. I go through the same configure/make > process on the Centos 6.6 VM on my home PC, and huge pages works just > fine. Maybe it's an issue with CentOS 6.4? Dunno, hard to believe that hugetlb support wasn't there in 6.4. A quick troll through the RHEL 6.5 and 6.6 release notes finds something about better hugetlb support for System Z processors, but what we're discussing here shouldn't be architecture-specific. You might try comparing /usr/include/sys/mman.h, /usr/include/bits/mman.h, and /usr/include/features.h between your 6.4 and 6.6 systems to see if you can spot any relevant differences. regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
