On Sat, 2005-07-30 at 12:06 +0200, Marc Ballarin wrote: > On Fri, 29 Jul 2005 19:15:42 -0400 > Lee Revell <[EMAIL PROTECTED]> 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
> HZ=100: HZ=1000: DIFF: > > 1) averages: > > backlight off, arstd off: > 637.17 679.67 42.5 > backlight off, artsd on: > 799.46 806.13 6.67 So it looks like artsd wastes way more power DMAing a bunch of silent pages to the sound card than HZ=1000. There's nothing the ALSA layer can do about this, it's a KDE bug. I think this is a good argument for leaving HZ at 1000 until some of these userspace bugs are fixed. Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
