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by mitchell_h 4068 days ago
Has anyone actually run into a situation where THP is a benefit? I've run into enough memory slow downs by transparent huge pages that it's just a default to turn it off on all builds. I've never seen a production work load that has had any performance gain from THP.

Same with numa.
2 comments
feld 4068 days ago
Yes, someone has been working on upstreaming 1GB SuperPages to FreeBSD because it dramatically increased the performance of their firewall appliances.

https://lists.freebsd.org/pipermail/freebsd-hackers/2014-Nov...

These large (>4K) pages definitely have their uses.

link
bonzini 4067 days ago
THP was introduced for KVM, and has huge benefits there. In fact I suggest that you set /sys/kernel/mm/transparent_hugepage/enabled to "madvise" rather than "never". This was applications that like their hugepages can still enable it manually.
link