Fan control does not allow to change Affinity

[rolex20]

I have a 12700K CPU with P-Cores and Efficient-cores. When I change the affinity to FanControl to run only on efficient cores (My games are assigned the P-Cores only), taskmanager accepts but then FanControl returns to affinity to all cpu's. Can you please allow changing the affinity?

[curious-city]

Is it imporant if FanControl runs on P- or E-Cores? The app barely uses any system ressources anyway, so it shouldn't be a concern.

[Rem0o]

FanControl doesn't mess with its process affinity or anything like that, so I don't know how I could "allow" changing affinity.

[rolex20]

This is about deciding which resources i want to give to fancontrol to optimize my own system. As I said, task manager allows changing the affinity and it accepts. Immediately I check again and the affinity is resetted to all cpu's. This means that the program checks and reassigns it's own affinities. I know some programs that don't allow this change so task manager fails when trying to change. But in this case there is no error, just that when you check again ,the affinities are resseted to all cpu's. If fancontrol itself does not reset it's own affinities, how else could this happen?

[Rem0o]

Nevermind, found it:

It's in the Ring0 code from LHM: https://github.com/LibreHardwareMonitor/LibreHardwareMonitor/blob/3959e8e3c04452fed566e88fb40d0847a64581d8/LibreHardwareMonitorLib/Hardware/Ring0.cs#L331

Most likely due to this: https://github.com/LibreHardwareMonitor/LibreHardwareMonitor/issues/330

[rolex20]

thank you Rem0o!, any chance not executing that line with a configuration option or some other way? (not all cpus are AMD ZEN)

[Rem0o]

Not really, as the thread affinity seems required to read each cores sensor.

[rolex20]

ok, I understand, but thanks for the reply