On my system, I set HugePages_Total to 2G(1024 x 2M), and I use 1G hugetlb, but the HugePages_Free is not 1G(512 x 2M), it is 280(280 x 2M) left, HugePages_Rsvd is 0, it seems someone use 232(232 x 2M) hugetlb additionally.
So how to find who use the additional hugetlb? I search every process and find the total hugetlb size is only 1G, cat /proc/xx/smaps | grep KernelPageSize, then account the vma size which KernelPageSize is 2048 kB. Thanks, Xishi Qiu
