Re: Experiences & recommendations related to HUGEPAGES in RHEL 7

Hey,
the reason behind your performance improvement is a better TLB usage - you don't need to work through the page table so often (translation physical address from a virtual address) if you are using HugePages.

VMware explained how TLB is used with their software here (page 3&4): https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vsp_41_perf_memory_resource-management-white-paper.pdf

_at_ Scott: I like a sentence that Mark Bobak said: "If you’re not using hugepages, you’re doing it wrong!"

Best Regards
Stefan Koehler

Independent Oracle performance consultant and researcher Website: http://www.soocs.de
Twitter: _at_OracleSK

> Andrew Kerber <andrew.kerber_at_gmail.com> hat am 15. Juli 2017 um 01:21 geschrieben:
>
> we have had good luck with them  Our observation is a substantial (10% or better) performance improvement when using hugepages on Virtual Machines.
>
> Andrew W. Kerber

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