I 'm using http://h10032.www1.hp.com/ctg/Manual/c01804533.pdf to tune RHEL7
The problem is that RHEL7 is switched to grub2, but guide was not updated and still uses grub.
If new version of guide was released and I just can't find it?
Particularly it's interesting how to replace this to use grub2:
Edit /boot/grub/grub.conf and add "nosoftlockup intel_idle.max_cstate=0 mce=ignore_ce" to the
kernel line
Edit /boot/grub/grub.conf and add "idle=poll" to the kernel line. This is in addition to the "nosoftlockup intel_idle.max_cstate=0
mce=ignore_mce" parameters that should have been added previously.