On Fri, 5 Feb 2021, Mike Pumford wrote:
I think estd might need some reworking for the now hugely multi-core processors in modern systems as average CPU is no longer a useful way to make an optimum performance decision on a multi-core system.
I run estd not for power-saving, but to keep the CPU temperature low (which it does lower--by ~5 C :)). As for its function, I think what it does is better done in the kernel than by a userland program. On the whole, estd is not very useful, either to keep the CPU cool or to save a whole lot of power (in my case, I don't use the laptop off the charger--it functions like a desktop): see the CAVEATS section of acpicpu(4). -RVP