5 ms·

can you share more details about your setup?

• bvrmn 2y ago
  Archlinux, mitigations (spectre alike) off, X11, OpenBox, bmpanel with only CPU/IO indicator. Light theme everywhere. Opera in power save mode. `powertop --auto-tune` and `echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo` Current laptop is Latitude 7390.
  • ribit 2y ago
    Right, so you are disabling all performance features and effectively turning your CPU into a low–end low–power SKU. Of course you’d get better battery life. It’s not the same thing though.
  • Sohcahtoa82 2y ago
    > echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo Isn't that going to torch performance? My i9-9900 has a base frequency of 3.6 Ghz and a turbo of 5.0 Ghz. Disabling the turbo would create a 28% drop in performance. I suppose if everything else on the system is configured to use as little power as possible, then it won't even be noticed. But seeing as CPUs underclock when idle (I've seen my i9 go as low as 1.2 Ghz), I'm not sure disabling turbo makes a significant impact except when your CPU is being pegged.
    • bvrmn 2y ago
      That's the point. I have no performance bottleneck with no_turbo. My i5 tends to turn on turbo mode and increased power demand (heat leaks) even if it's no needed. For example with no_turbo laptop is always cold and fan basically stays silent. With turbo it easily gets 40C warm while watching YT or doing my developer stuff, building docker containers and so.