Linux 4.5 Appears To Slightly Lower Power Use, But Linux 4.6 Will Be Even Better

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  • phoronix
    Administrator
    • Jan 2007
    • 67366

    Linux 4.5 Appears To Slightly Lower Power Use, But Linux 4.6 Will Be Even Better

    Phoronix: Linux 4.5 Appears To Slightly Lower Power Use, But Linux 4.6 Will Be Even Better

    With Linux 4.5 expected this weekend, I've been running some more, one-off tests of this new kernel. One of the latest test runs was looking at the power use of the kernel on an Intel Haswell ultrabook...

    Phoronix, Linux Hardware Reviews, Linux hardware benchmarks, Linux server benchmarks, Linux benchmarking, Desktop Linux, Linux performance, Open Source graphics, Linux How To, Ubuntu benchmarks, Ubuntu hardware, Phoronix Test Suite
  • jakubo
    Senior Member
    • Jul 2009
    • 361

    #2
    it seems the savings come from CPU cooler. it seems that with 4.6 the CPU is hotter. at least according to the graph.

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    • froyo
      Phoronix Member
      • Jun 2011
      • 65

      #3
      @Michael: There seem to be typos in the text:

      "Linux 4.5 Appears To Slightly Lower Power Use" - verb missing.

      First two graphs: "Inntel"

      Comment

      • blackshard
        Senior Member
        • Oct 2009
        • 603

        #4
        So, what happens to my carrizo laptop? And other laptops with different hardware? To me, reading the article, looks like the lower power usage is for exclusively for that laptop with specific intel hardware. There should be at least another completely different machine to say that newer kernels are less power hungry.

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        • SuperIce97
          Junior Member
          • Sep 2015
          • 13

          #5
          Originally posted by froyo View Post
          @Michael: There seem to be typos in the text:

          "Linux 4.5 Appears To Slightly Lower Power Use" - verb missing.

          First two graphs: "Inntel"
          In the title, "lower" is being used as a verb. The statement is grammatically correct.

          The Inntel typo can't really be changed now, the graphs were made by PTS and Michael must've misspelled it when he did the tests. I don't think you can change the names of the tests after they've been done.

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          • Michael
            Phoronix
            • Jun 2006
            • 14308

            #6
            Originally posted by blackshard View Post
            So, what happens to my carrizo laptop? And other laptops with different hardware? To me, reading the article, looks like the lower power usage is for exclusively for that laptop with specific intel hardware. There should be at least another completely different machine to say that newer kernels are less power hungry.
            Unfortunately, I only have Intel laptops/ultrabooks.... So no access to AMD mobile systems unfortunately unless some company wants to send one out or a bunch of people tip and earmark the money for one, etc.
            Michael Larabel
            https://www.michaellarabel.com/

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            • Azrael5
              Senior Member
              • Jul 2012
              • 1954

              #7
              I will wait for november release before using a new Linux distro because of kernel and wayland is not well implemented yet.

              Comment

              • Azrael5
                Senior Member
                • Jul 2012
                • 1954

                #8
                btw simple question: which diagnostic too operate in linux allowing to understand what drivers and kernel optimization the operating system has to apply?

                Comment

                • briantech
                  Junior Member
                  • May 2014
                  • 10

                  #9
                  What about skylake?

                  Comment

                  • seandarcy
                    Junior Member
                    • Nov 2011
                    • 8

                    #10
                    What happens to power use if you just enable FB and PSR on 4.4 ? On vanilla HSW hardware, there shouldn't be much chance of heartbreak .

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