Dell EMC VxFlex Ready Node R740xd - Optimize CPU Performance on SUSE Systems

2. Find the GRUB_CMDLINE_LINUX configuration option and append the following to the line to the kernel
parameters:
intel_idle.max_cstate=0 processor.max_cstate=1 intel_pstate=disable
Example:
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap rhgb
intel_idle.max_cstate=0 processor.max_cstate=1 intel_pstate=disable quiet"
3. Compile the new GRUB:
grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg
4. Stop and then disable the tuned service:
systemctl stop tuned
systemctl disable tuned
5. Reboot the server.
Optimize CPU performance on SUSE systems
To ensure maximum CPU performance on systems running SUSE 12.2.2 or higher, perform the following procedure:
Procedure
1. Open the GRUB template for editing:
vim /etc/default/grub
2. Find the GRUB_CMDLINE_LINUX configuration option and append the following to the line:
"intel_idle.max_cstate=0 processor.max_cstate=1 intel_pstate=disable"
Example:
GRUB_CMDLINE_LINUX="intel_idle.max_cstate=0 processor.max_cstate=1 intel_pstate=disable"
3. Compile the new GRUB:
mkgrub2-mkconfig -o /boot/efi/EFI/sles/grub.cfg
4. Reboot the server.
Installing the Linux operating system
28 VxFlex Ready Node Operating System Installation Guide for Linux