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A Proper Solution To The Linux ASPM Problem

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  • A Proper Solution To The Linux ASPM Problem

    Phoronix: A Proper Solution To The Linux ASPM Problem

    At long last, it looks like there is an adequate solution to the Active State Power Management (ASPM) problem in the Linux kernel , a.k.a. the well-known and wide-spread power regression in the Linux 2.6.38 kernel, which has been causing many laptops to go through significantly more power than they should. This is not another workaround, but rather a behavioral change in the kernel to better decide when the PCI Express ASPM support should be toggled.

    http://www.phoronix.com/vr.php?view=16682

  • #2
    What a relief. I am happy today

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    • #3
      Finally.

      Actually I was planning to e-mail LKML with my solution to the problem, a white-list of ASPM supported devices on computers with a proper BIOS, which could be collected through Phoronix Test Suite.

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      • #4
        Other regressions

        [quote]
        That's one regression now addressed, with only several more power management issues left in the kernel...
        [\quote]

        Did you find those other regressions with git-bisect?

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        • #5
          'Bout fuckin' time! Seriously, this should have been fixed way earlier. If you introduce a regression, you revert to previous version, too bad the kernel devs don't get that...

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          • #6
            Originally posted by LinuxID10T View Post
            'Bout fuckin' time! Seriously, this should have been fixed way earlier. If you introduce a regression, you revert to previous version, too bad the kernel devs don't get that...
            That's what they did do. They introduced a power regression to get rid of a stability regression. It was the lesser of two evils until they came up with a proper solution ie try any copy what windows does

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            • #7
              Michael what are the other power regressions you mention in the article?

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              • #8
                Originally posted by 89c51 View Post
                Michael what are the other power regressions you mention in the article?
                I'm not permitted to publicly talk about them at the moment.
                Michael Larabel
                http://www.michaellarabel.com/

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                • #9
                  Originally posted by Michael View Post
                  I'm not permitted to publicly talk about them at the moment.
                  Huh? Is some kind of vendor who forbids this???

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                  • #10
                    Originally posted by Michael View Post
                    I'm not permitted to publicly talk about them at the moment.
                    weird.

                    at least can you answer if they are taken care of???

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