Post Syndicated from corbet original https://lwn.net/Articles/1009039/

Huge pages can increase the performance of many programs, but they can also
have unfortunate performance impacts of their own. Over the last few
years, multi-size transparent huge pages (mTHPs) have increasingly been
seen as a happy medium that bring the benefits of huge pages at a lower cost.
The system cannot benefit from mTHPs, though, if it does not create them;
two developers have independently posted patches to enable the creation of
mTHPs in the background.