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Eventually "Schedutil" Could Replace Linux's Existing CPU Scaling Governors

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  • #11
    Well that explains a lot about AMD's testing procedures

    DarkFoss I don't have any stuttering issues and I pretty much stick to schedutil. Granted that I also run my games with nice --10 and, anecdotally, I seem to have better response and less lag out of programs ran with nice --5 to --10 since -10 is what my user limits are set at.

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    • #12
      Originally posted by amdtesterman View Post
      The question is why not to say the same to intel with intel pstate. Is my only one question. Because I dude amd code is so different from intel ones but the old age that have intel ones
      P-State was merged many years ago now, prior to Schedutil being in the kernel.
      Michael Larabel
      http://www.michaellarabel.com/

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      • #13
        Yeah, but Performance doesn't scale the CPU at all, it just stays at full clock. That's not a valid comparison at all.

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        • #14
          Originally posted by Michael View Post

          P-State was merged many years ago now, prior to Schedutil being in the kernel.
          yes, you have the reason in that side.. but I don't know if schedutil can improve so much because seeing the benchs you had posted with different governors...
          I don't know if linux kernel mantainers are "too" optimistic"

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          • #15
            Originally posted by amdtesterman View Post

            yes, you have the reason in that side.. but I don't know if schedutil can improve so much because seeing the benchs you had posted with different governors...
            I don't know if linux kernel mantainers are "too" optimistic"
            I hope Linux kernel maintainers are extremely pessimistic, performance and security paranoid.

            On the other hand, I consider Linux kernel scheduler needs to hugely improve in an urgent manner these days.

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            • #16
              Originally posted by Peter Fodrek View Post


              Only that AMD CPPC will be same as AMD DAL/DC Firstly rejected and then a accepted
              No chance of that for something so miniscule as scheduling and freq scaling. Improve what exists, or die.

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              • #17
                Originally posted by DarkFoss View Post
                Schedutil is great if you enjoy stuttering in games.
                Thanks for this - switching to the performance governor fixed stuttering with a 2070 Super - see more details here.

                previously schedutil was fine with a Rx 570 8gb passthrough (& seemed to actually run better than the performance governor on Ryzen 3700x)

                I think this is related to message signal interrupts on Nvidia GPUs

                2021 update - using schedutil (Arch Linux default) instead of the performance governor gives me 10 FPS more in the hitman 2 benchmark
                Last edited by itoffshore; 25 July 2021, 02:13 PM.

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