Memory usage doesn't add up - what is using my memory?
Solution 1:
In my case, some memory is reserved for hugepage. Considering the hugepages reserved memory, it adds up.
controller-0:/home/wrsroot# grep -i huge /proc/meminfo
HugePages_Total: 1000
HugePages_Free: 488
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB