The powertop homepage stated you'd be interested in statistics. So here we go:
Linux Kubuntu Gutsy 2.6.22-14-generic #1 SMP Thu Jan 31 23:33:13 UTC 2008 x86_64 GNU/Linux @ 30.7 watts constant: PowerTOP 1.9 (C) 2007 Intel Corporation Cn Time C0 (Processor running) (100,0%) C1 0,0ms ( 0,0%) C2 0,0ms ( 0,0%) Wakes per Second : 42327,1 Interval: 15,0s 25,7% ( 95,8) <interrupt> : extra timer interrupt 21,8% ( 81,5) mplayer : do_nanosleep (hrtimer_wakeup) 12,6% ( 47,1) konsole : schedule_timeout (process_timeout) 12,6% ( 46,9) <interrupt> : uhci_hcd:usb2, HDA Intel 11,0% ( 40,9) <interrupt> : ahci 9,4% ( 35,2) <interrupt> : uhci_hcd:usb4, bcm43xx compared to Kubuntu Gutsy 2.6.24.2-vanilla @ 23.8(idle) - 30 watts. C0 (Processor running) ( 0,7%) C1 0,0ms ( 0,0%) C2 54,7ms (99,3%) P-States (Frequenzen) Wakes per Second : 18,3 Interval: 15,0s 18,5% ( 4,0) <kernel module> : usb_hcd_poll_rh_status (rh_timer_func) 13,9% ( 3,0) <interrupt> : acpi 9,0% ( 1,9) Xorg : do_setitimer (it_real_fn) 6,5% ( 1,4) <interrupt> : ahci (The C-State unfortunately is still only used after S3 and resume.) So from 30.7 to 23.8 watts and from 40000 to ~ 20-30 wakes / second in idle. If that isn't great success :) More information on request. Cheers, Dennis _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
