Experimental Linux Code For 1GB PUD-Level THPs Shows 34% Faster Memory Access Times

Early, experimental code for implementing 1GB PUD-level THPs in the Linux kernel are showing positive benchmark results but other upstream stakeholders were surprised by this patch series appearing and it looking like it could be a while until if/when the patches are mainlined for helping to reduce transaction lookaside buffer (TLB) pressure without resorting to Hugetlbfs.

Usama Arif posted a request for comments (RFC) patch series on 1GB Page Upper Directory (PUD) Transparent Huge Pages (THP) support.