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thermald can also be used for older Intel CPUs. This daemon proactively controls thermal parameters using P-states, T-states, and the Intel power clamp driver. Thermald is a Linux daemon used to prevent the overheating of Intel CPUs. Scaling drivers interact with the CPU directly, enacting the desired frequencies that the current governor is requesting.Ī default scaling driver and governor are selected automatically, but userspace tools like cpupower, acpid, Laptop Mode Tools, or GUI tools provided for your desktop environment, may still be used for advanced configuration.Scaling governors implement the algorithms to compute the desired CPU frequency, potentially based off of the system's needs.The Linux kernel offers CPU performance scaling via the CPUFreq subsystem, which defines two layers of abstraction: Scaling can be done automatically in response to system load, adjust itself in response to ACPI events, or be manually changed by user space programs. CPU performance scaling enables the operating system to scale the CPU frequency up or down in order to save power or improve performance.