Messages in this thread | | | Date | Tue, 26 Jul 2005 15:14:39 +0200 | From | Vojtech Pavlik <> | Subject | Re: 2.6.13-rc3 Battery times at 100/250/1000 Hz = Zero difference |
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On Thu, Jul 21, 2005 at 08:04:48PM +0200, Voluspa wrote: > > I'd gladly (ehum..) redo this mind-numbingly boring test if someone can > point me to a magic software which unleashes some untapped powersaving > feature of the CPU. > > _Kernel 2.6.13-rc3 Boot to Death_: > > 2h48m at 100 HZ > 2h48m at 250 HZ > 2h47m at 1000 HZ
Is USB loaded? It'll do 1000 interrupts per second if it is. I'm not sure if this still is the case on 2.6.13-rc3, please check your /proc/interrupts to see the rate at which interrupt counters are increasing.
> Acer Aspire 1520 (1524) WLMi, AMD Athlon 64 3400+ (socket 754 according > to dmidecode-2.6). L1 64K/64K, L2 1024K, 512MB DDR RAM. Manufacturing > date 18 March 2005. Bought 20 May 2005. Battery used to full drain ca 5 > times prior to this test (after the initial 3 charge/drains to reach its > full potential). "cat /proc/acpi/battery/BAT0/info":
This almost looks like a regular Athlon 64, not even the mobile version. I wouldn't expect very big deep sleep capabilities on that one. You can check the
/proc/acpi/processor/CPU1/power
file for the list of C states. A normal Athlon64 will likely have only C0. Mobile chips can go up to C4, which is really deep sleep.
-- Vojtech Pavlik SuSE Labs, SuSE CR - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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