A multi-threaded application not seem to use Transparent HugePages in RHEL-6

Issue

• A custom application multi-threaded application seems to allocate a lot of memory in arenas, but all of that memory seems to be backed by regular pages and not Transparent HugePages (THP), as seen from /proc/meminfo.
• Waiting for a while results in consolidation of the pages into THP, but the allocation should have been backed by THP from the beginning.