Originally posted by Kamikaze
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Intel Developer Finds 50 Watt Power Regression In Linux
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Originally posted by Michael View PostI believe that's only becoming now possible with the very latest Intel (and maybe) AMD hardware. I believe it's mostly server-focused spec.
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Originally posted by Ericg View PostHey, Michael, is there any way to do a per-component breakdown of watt usage? Was thinking maybe do a comparison between Linux and Windows 8 and figure out exactly which subsystems are more or less power hungry. Because everyone going "We need better power efficiency in the kernel!" is great and all, but it'd be a lot more effective if they could go "Okay, see, under Linux the CPU is using more energy even while idle compared to Windows." or "The memory is using more power while idle than Windows" give developers targeted areas to focus on, ya know?
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Originally posted by Ericg View PostHey, Michael, is there any way to do a per-component breakdown of watt usage? Was thinking maybe do a comparison between Linux and Windows 8 and figure out exactly which subsystems are more or less power hungry. Because everyone going "We need better power efficiency in the kernel!" is great and all, but it'd be a lot more effective if they could go "Okay, see, under Linux the CPU is using more energy even while idle compared to Windows." or "The memory is using more power while idle than Windows" give developers targeted areas to focus on, ya know?
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Originally posted by Michael View PostIt's already fully-automated by PTS. The only thing missing me from routinely monitoring it is only having one WattsUp meter (~$100 per unit) and not running the very high-end systems constantly (but only lower-end Core i3/i5s or Atoms) due to energy costs.
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Originally posted by toyotabedzrock View PostSo maybe someone should buy a few energy meters for kernel regression testing. It wouldn't be hard to automate it.
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So maybe someone should buy a few energy meters for kernel regression testing. It wouldn't be hard to automate it.
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Is there any variable or loop or anything in the Linux kernel that can't be overridden by a kernel command line param?
How about the variables from the stack, those too?
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