first post here, and really need you help :-( I am trying to enable hugepages for use with ovs and DPDK on centos 7. I have tried to edit the GRUB_CMDLINE_LINUX in /etc/default/grub see code below.  GRUB_CMDLINE_LINUX=crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet hugepagesz=1G hugepages=16 hugepagesz=2M hugepages=2048 iommu=pt intel_iommu=on isolcpus=1-13,15-27grub2-mkconfig -o /boot/grub2/grub.cfg :However after i reboot and issue the cat /proc/cmdline, the resulting output does not show appended hugepage entries. :-( [root@localhost ~]# cat /proc/cmdlineBOOT_IMAGE=/vmlinuz-3.10.0-327.36.3.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgbquiet LANG=en_GB.UTF-8[root@localhost ~]# grep Huge /proc/meminfo :Am i missing anything please? 
Enabling Hugepages at boot time on centos 7
centos;grub2;virtual machine;grub