Dell PowerFlex Appliance with PowerFlex 3.x Administration Guide

Configure the CPU state for optimized performance

Use this procedure to verify and update the CPU optimization for high performance on PowerFlex nodes or PowerFlex management controller 2.0.

1. Perform the following for a PowerFlex storage-only or a PowerFlex compute-only based deployment on embedded operating system:
   1. Use SSH to log in to the PowerFlex nodes.
   2. Run the following command to open the grub file:
      #vi /etc/default/grub
   3. Add the following details against GRUB_CMDLINE_LINUX=:
      intel_idle.max_cstate=0 processor.max_cstate=0 intel_pstate=disable
   4. Type Esc:wq! to save the file.
   5. Type cat /etc/*-release to find the embedded operating system and run the following command to regenerate the grub configuration file:

      Option	Run the following command to regenerate the grub configuration file
      For EFI booted PowerFlex nodes	If CentOS: grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg If SLES: grub2-mkconfig -o /boot/efi/EFI/sles/grub.cfg
      For BIOS booted PowerFlex nodes	grub2-mkconfig -o /boot/grub2/grub.cfg

   6. To regenerate the initrd, type #dracut -f
   7. Place the node into instant maintenance mode or protected maintenance mode and reboot.
   8. Repeat this procedure on all the remaining PowerFlex nodes.
2. Perform the following for a PowerFlex compute-only deployment with VMware ESXi:
   1. Log in to the VMware vSphere Client.
   2. Go to vSphere > Host > Configure > Hardware > Overview > Power Management > Edit Power Policy.
   3. Select High Performance and click OK.
   4. Repeat this procedure on all the remaining PowerFlex nodes.
3. Perform the following for a PowerFlex hyperconverged node or PowerFlex management controller 2.0:
   1. Use SSH to log in to the PowerFlex nodes or PowerFlex management controller 2.0.
   2. Run the following command to open the grub file:
      vi /etc/default/grub
   3. Add the following details against GRUB_CMDLINE_LINUX=:
      intel_idle.max_cstate=0 processor.max_cstate=0 intel_pstate=disable
   4. Type Esc:wq! to save the file.
   5. Type cat /etc/*-release to find the embedded operating system and run the following command to regenerate the grub configuration file:

      Option	Run the following command to regenerate the grub configuration file
      If SUSE	grub2-mkconfig -o /boot/efi/EFI/sles/grub.cfg
      If CentOS	grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

   6. To regenerate the initrd, type #dracut -f
   7. Place the node into instant maintenance mode or protected maintenance mode and reboot.
   8. Repeat this procedure on all the remaining PowerFlex nodes.