Re: [RFC PATCH 2/3] Add tunable to control THP behavior

[Andy Lutomirski]

On Thu, Dec 12, 2013 at 10:00 AM, Alex Thorlton <athorlton@xxxxxxx> wrote:
> This part of the patch adds a tunable to
> /sys/kernel/mm/transparent_hugepage called threshold.  This threshold
> determines how many pages a user must fault in from a single node before
> a temporary compound page is turned into a THP.

Is there a setting that will turn off the must-be-the-same-node
behavior?  There are workloads where TLB matters more than cross-node
traffic (or where all the pages are hopelessly shared between nodes,
but hugepages are still useful).

--Andy
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