powertop on Inspiron 6400

[Török Edvin]

Hi,

I have tried powertop on a Dell  Inspiron 6400 (CPU: Core Duo).
After following some of the tips I got from 3.1h to 4h of battery. Great tool!

The top wakeup cause is ide1:
35.2% ( 9.0)    <interrupt> : ide1
25.2% ( 6.6)    gnome-terminal : schedule_timeout (process_timeout)
10.3% ( 2.7)                   Xorg: do_setitimer (it_real_fn)
...

Wakeups-from-idle per second: 118.9
Power usage: 13.6W (3.9h left)

I don't know why ide1 causes so many wakeups.
I have laptop-mode enabled, and the disk is spinned-down, so any idea
why its still waking up so often?

The other "offender" is gnome-terminal, but its running nothing but
powertop itself.

Stopping X, and switching to runlevel 2, reduces wakups/sec to ~80.
Also the ide1 wakeup dissapears!
Now the biggest offenders are NetworkManager (29%) b44_open
(b44_timer), <kernel core> :queue_delayed_work_on
(delayed_work_timer_), and
<kernel core>: neigh_table_init_no_netlink

Switching back to runlevel 3, the ide1 wakeups are back. How can I
find out which program is causing them?

Some sys info:
Linux localhost 2.6.21-gentoo #4 SMP Tue May 15 20:44:28 i686 Genuine
Intel(R) CPU T2300 @ 1.66Ghz GNU/Linux

Thanks,
--Edwin