Discrepancy between vm.nr_hugepages and HugePages_Total

My /etc/sysctl.conf have: vm.nr_hugepages = 20484 but (even after sysctl -p) I got: [root@vm04-oracle-19c ~]# cat /proc/meminfo | grep -i hugepages AnonHugePages: 0 kB ShmemHugePages: 0 kB FileHugePages: 0 kB HugePages_Total: 18933 HugePages_Free: 46 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB [root@vm04-oracle-19c ~]# Why this happen? HugePages_Total should be 20484 Current memory: [opc@vm04-oracle-19c ~]$ free -h total used free shared buff/cache available Mem: 63Gi 41Gi 887Mi 7.2Gi 21Gi 14Gi Swap: 7.8Gi 7.0Mi 7.8Gi