Setting CPU governor and I/O scheduler on CM11 Nightly + Kitkat nypon topic

Hi,

I have installed CM11 Nightly + Nypon Kitkat on my Xperia P. I want to know what is the default governor and i/o scheduler on this ROM.

Also I want to change the governor and I/O scheduler, how can i do it without any apps? If any one have good tweaks for this ROM to save the battery pls share it....!!!