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* have a look at [this link](http://askubuntu.com/questions/523640/how-i-can-disable-cpu-frequency-scaling-and-set-the-system-to-performance)
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for further information.
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* you must disable p-state and c-state in linux so you need to add `intel_pstate=disable` to the Linux boot options,
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i.e `GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_pstate=disable processor.max_cstate=1 intel_idle.max_cstate=0 idle=poll""`
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i.e `GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_pstate=disable processor.max_cstate=1 intel_idle.max_cstate=0 idle=poll"`
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in `/etc/default/grub`, then perform `update-grub`
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Note: when using the new kernel dead line scheduler, you need to have
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