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Linux Kernel Suffering Power Management Regression?

Posted by Soulskill on from the year-of-linux-on-the-coppertop dept.

An anonymous reader writes "It appears that there's a big power management regression in the Linux kernel for the 2.6.38 and 2.6.39 development releases, including the kernel to ship with Ubuntu 11.04 next week. It's reportedly causing a 10~30% increase in power consumption on many laptop computers."

3 of 186 comments (clear)

  1. Re:Linus Torvalds and regression? by asdf7890 · · Score: 4, Interesting

    This is presumably not an intentional regression though, more likely just some new/updated code that is causing the CPU to be more busy when the machine is effectively idle than it was previously. It isn't like someone said "hey, Linus, do you mind if I make the kernel eat more power?"!

  2. Re:Linus Torvalds and regression? by h4rr4r · · Score: 4, Interesting

    Ever notice it is only Phoronix reporting that?
    When did steam come to linux again?

    Sorry, but I want to see this backed up another source before I just go believing it.

  3. Re:Linus Torvalds and regression? by Jah-Wren+Ryel · · Score: 5, Interesting

    Ever notice it is only Phoronix reporting that?

    Do you know of any other organization with a large automated regression testing system for linux kernels? That's not just me being snarky, its a serious question - who else beside phoronix is doing this sort of wide-scale testing on a constant basis?

    --
    When information is power, privacy is freedom.