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EST(4)		      DragonFly Kernel Interfaces Manual		EST(4)


est -- Enhanced SpeedStep Technology support


To compile this driver into the kernel, place the following line in your kernel configuration file: options CPU_ENABLE_EST To load this driver as a module at boot time, place the following line in loader.conf(5): est_load="YES"


The est driver provides support for the Enhanced SpeedStep Technology present in some CPUs. Please note that powerd(8) should be preferred if it is working properly on your system. If the CPU is supported est creates the following variables in the machdep.est branch of the sysctl(3) MIB. frequency.available The list of frequencies supported by est for the CPU (read only). frequency.current The current CPU frequency (read only). frequency.target The target CPU frequency (read/write).


powernow(4), powerd(8)


The est driver first appeared in DragonFly 1.5. DragonFly 4.3 October 10, 2014 DragonFly 4.3

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