Announcement

Collapse
No announcement yet.

Intel's P-State Driver Is Getting Better Tuned For Performance

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Intel's P-State Driver Is Getting Better Tuned For Performance

    Phoronix: Intel's P-State Driver Is Getting Better Tuned For Performance

    The Intel P-State driver that's found in modern versions of the Linux kernel as a replacement to the older CPUfreq code is getting tuned for better performance while boasting greater power-savings...

    http://www.phoronix.com/vr.php?view=MTY3Mzg

  • #2
    Does anyone know if also the first gen Core i5's will be supported, e.g. my i5-750? I can't find any information whatsoever on it..

    Comment


    • #3
      hm!

      Originally posted by Nuc!eoN View Post
      Does anyone know if also the first gen Core i5's will be supported, e.g. my i5-750? I can't find any information whatsoever on it..
      you only need to check if its working or not if you are using ubuntu use this command in terminal "cpufreq-info"

      Comment


      • #4
        Saving the world, one gram of carbon at a time. 0.35% is nice, but here's hoping for 3.5%.

        Comment


        • #5
          You would think Intel would throw more resources behind this type of code to make sure energy and performance was as good as it could get.

          Comment


          • #6
            I don't know if this has to do with the articles subject, but I found it strange that when compiling on my kubuntu install it easily took 2 times longer to compile various software compared to OSX on the same machine. I saw that the CPU never clocked to its max state. Lowering a threshold somewhere(don't remember exactly) in proc/sysfs remedied this.

            Comment


            • #7
              Nice to see there is still some efford to make the CPU more power efficient. But what about the Package state issues? My Haswell i7 w/o discrete gpu still won't enter PC7 when idle resulting in approx twice as much power drain compared to my old SNB i7.

              Comment


              • #8
                Originally posted by uwgandalf View Post
                when compiling on my kubuntu install it easily took 2 times longer to compile
                Ubuntu disables P-State driver by default in their kernel.

                Comment


                • #9
                  Are there software ways to measure power usage on a non-Windows OS?

                  Comment


                  • #10
                    Yes! sysfs provides access to Battery properties such as discharge current.

                    Comment


                    • #11
                      Have applied the patch to kernel 3.15-rc3 and compiled it. Didn't reboot yet though.

                      But I'm with saski, Intel should have a look at PC states. I'm on a desktop so it's not that big of a deal, but still, it'd be nice to see states deeper than PC2 being used.

                      Comment


                      • #12
                        was as good as it could get.


                        Comment

                        Working...
                        X