Re: Power consumption HZ100, HZ250, HZ1000: new numbers

Marc Ballarin
2005-07-30T10:08:17Z

On Fri, 29 Jul 2005 19:15:42 -0400
Lee Revell <rlrevell@joe-job.com> wrote:

>
> What kind of results do you get with a more realistic setup, like
> running KDE or Gnome OOTB?
>

Here are results with KDE running.

- no peripherals attached, i.e. truly mobile setup.
- all modules loaded
- klaptopdaemon disabled in order to eliminate competition in polling the
already slow battery controller
- furthermore, I found that artsd prevents entering C3 and generally
increases power consumption (ALSA, snd_intel8x0)
- voltage is 16.5V

Since the results aren't as stable as in the minimal setup (especially
with HZ=1000), I'll post raw numbers and averages:

HZ=100: HZ=1000: DIFF:

1) averages:

backlight on, artsd off:
765.00 812.12 42.12

backlight off, arstd off:
637.17 679.67 42.5

backlight on, artsd on:
927.60 933.33 5.73

backlight off, artsd on:
799.46 806.13 6.67

2) raw numbers:

771 mA <= backlight on 801 mA <= backlight on
764 mA 818 mA
763 mA 832 mA
763 mA 817 mA
764 mA 796 mA
766 mA 828 mA
764 mA 831 mA
635 mA <= backlight off 824 mA
635 mA 795 mA
635 mA 801 mA
636 mA 816 mA
636 mA 797 mA
646 mA 816 mA
638 mA 799 mA
637 mA 817 mA
639 mA 801 mA
634 mA 817 mA
637 mA 668 mA <= backlight off
636 mA 690 mA
637 mA 671 mA
764 mA <= backlight on 692 mA
771 mA 668 mA
929 mA <= artsd started 689 mA
924 mA 673 mA
942 mA 711 mA
927 mA 668 mA
925 mA 668 mA
926 mA 689 mA
925 mA 672 mA
926 mA 677 mA
923 mA 672 mA
929 mA 689 mA
797 mA <= backlight off 672 mA
800 mA 687 mA
800 mA 669 mA
813 mA 687 mA
799 mA 673 mA
797 mA 688 mA
798 mA 668 mA
799 mA 722 mA <= backlight on
800 mA 833 mA <= artsd started
797 mA 929 mA
799 mA 928 mA
797 mA 943 mA
797 mA 929 mA
932 mA <= backlight on 947 mA
929 mA
929 mA
935 mA
928 mA
945 mA
929 mA
929 mA
809 mA <= backlight off
799 mA
814 mA
799 mA
816 mA
799 mA
817 mA
799 mA
805 mA
799 mA
813 mA
800 mA
813 mA
800 mA
817 mA
799 mA
947 mA <= backlight on