vdsm supports dynamic allocation of Huge Pages, but https://access.redhat.com/solutions/4904441 indicates the issues in 4.3 related to hugepages (you can see the solution via RH dev subscription).
If you needed to set them manually and everything works normally, I would have picked something like 90-95% in HugePages.

Yet, due to the issues described in that solution - it's better to enable HugePages only in the Guest.

Best Regards,
Strahil Nikolov


On Sat, Oct 2, 2021 at 10:13, Tommy Sway
<sz_cuitao@163.com> wrote:
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