Fwd: Less Watts

[Yuan Chao]

On 9/25/07, Bernardo Innocenti <bernie at codewiz.org> wrote:

> Could you try again with the latest images and report what's causing
> the most wakeups?
Sure. Here is the results from OS603. It seems that there's no much
difference from my past memory. :) However, I don't know why the total
wakeups doesn't seem to equal to the sum of all listed processes.

PowerTOP 1.8    (C) 2007 Intel Corporation

Collecting data for 15 seconds
< Detailed C-state information is only available on Mobile CPUs (laptops) >
P-states (frequencies)
Wakeups-from-idle per second : 492.7    interval: 15.0s
Top causes for wakeups:
  54.5% (213.9)            python : schedule_timeout (process_timeout)
  35.0% (137.3)       <interrupt> : mfgpt-timer
   3.3% ( 12.8)     <kernel core> : ehci_irq (ehci_watchdog)
   2.5% ( 10.0)           Journal : <12f181  schedule_timeout (process_timeout)
   2.1% (  8.3)       <interrupt> : ehci_hcd:usb1, ohci_hcd:usb2
   0.6% (  2.4)     sugar-console : schedule_timeout (process_timeout)
   0.5% (  2.0)    wpa_supplicant : schedule_timeout (process_timeout)
   0.4% (  1.6)     <kernel core> : neigh_table_init_no_netlink
(neigh_periodic_timer)
   0.3% (  1.1)                 X : do_setitimer (it_real_fn)
   0.3% (  1.1)    NetworkManager : schedule_timeout (process_timeout)
   0.2% (  0.6)   libertas_worker : wlan_scan_networks (delayed_work_timer_fn)
   0.1% (  0.5)     <kernel core> : queue_delayed_work_on
(delayed_work_timer_fn)
   0.1% (  0.3)     <kernel core> : dst_run_gc (dst_run_gc)
   0.1% (  0.2)              init : schedule_timeout (process_timeout)
   0.1% (  0.2)   libertas_worker : netif_carrier_on (delayed_work_timer_fn)
   0.1% (  0.2)     <kernel core> : page_writeback_init (wb_timer_fn)
   0.0% (  0.1)              sshd : sk_reset_timer (tcp_write_timer)
   0.0% (  0.1)     sugar-console : dst_run_gc (dst_run_gc)

> Maybe we know already... power management is not my field.
Neither mine. ;)


-- 
Best regards,
Yuan Chao