powertop help

[Fittersman]

im not really sure what all this means, but this is what powertop gives me

Top causes for wakeups:
  77.6% (927.9)       <interrupt> : extra timer interrupt 
   5.1% ( 61.1)       <interrupt> : uhci_hcd:usb1, firewire_ohci, nvidia 
   4.2% ( 50.0)       S06cpuspeed : queue_delayed_work_on (delayed_work_timer_fn
   2.8% ( 34.0)       <interrupt> : uhci_hcd:usb3, ehci_hcd:usb7 
   2.2% ( 26.4)              Xorg : do_setitimer (it_real_fn) 
   1.8% ( 21.5)       <interrupt> : iwl4965, sdhci:slot0 

Suggestion: Disable the unused bluetooth interface with the following command:
  hciconfig hci0 down ; rmmod hci_usb
Bluetooth is a radio and consumes quite some power, and keeps USB busy as well.

Top causes for wakeups:
  76.4% (925.8)       <interrupt> : extra timer interrupt 
   5.0% ( 60.8)       <interrupt> : uhci_hcd:usb1, firewire_ohci, nvidia 
   4.4% ( 53.1)       <interrupt> : uhci_hcd:usb3, ehci_hcd:usb7 
   4.1% ( 50.0)       S06cpuspeed : queue_delayed_work_on (delayed_work_timer_fn
   2.3% ( 27.8)              Xorg : do_setitimer (it_real_fn) 
   1.8% ( 21.8)       <interrupt> : iwl4965, sdhci:slot0 

Suggestion: Enable the CONFIG_NO_HZ kernel configuration option.
This option is required to get any kind of longer sleep times in the CPU.

Top causes for wakeups:
  75.8% (923.4)       <interrupt> : extra timer interrupt 
   5.0% ( 61.4)       <interrupt> : uhci_hcd:usb1, firewire_ohci, nvidia 
   4.5% ( 55.1)       <interrupt> : uhci_hcd:usb3, ehci_hcd:usb7 
   4.1% ( 50.0)       S06cpuspeed : queue_delayed_work_on (delayed_work_timer_fn
   2.4% ( 28.7)              Xorg : do_setitimer (it_real_fn) 
   1.8% ( 21.8)       <interrupt> : iwl4965, sdhci:slot0 

Suggestion: enable the noatime filesystem option by executing the following comm
and:
   mount -o remount,noatime /          or by pressing the T key

i really dont know what that means, but as far as i know i have already disabled bluetooth but it keeps 'suggesting' that i disable it. Did i really disable it? or is it still running? and how can i use this app to save power? its really not changing anything if you ask me....

[glennzo]

I just installed PowerTop. Pretty interesting stuff. Your first notice about the bluetooth stuff, my guess is that it's telling you that if you're not using it turn it off to save on system resources, but it may not be worth worrying about. I usually turn off everything that I'm not using through system services. Is that where you disabled bluetooth?

[Fittersman]

Originally Posted by glennzo

I just installed PowerTop. Pretty interesting stuff. Your first notice about the bluetooth stuff, my guess is that it's telling you that if you're not using it turn it off to save on system resources, but it may not be worth worrying about. I usually turn off everything that I'm not using through system services. Is that where you disabled bluetooth?

yeah i disabled bluetooth there, and some other things, but now it seems that i was able to disable it, as well as most other things.

the only suggestion there is left is:

Suggestion: Enable the CONFIG_NO_HZ kernel configuration option.
This option is required to get any kind of longer sleep times in the CPU.

i still have alot of wakeups though, i was looking on the internet and most people say that you can get as low as 3 wakeups. Im getting ~1633. That is alot more than 3, so there must be something i can do to stop that.

[glennzo]

Well, is it really something worth worrying about?

[Fittersman]

yeah, what if its really not disabled though, or were you talking about the wakeups?

id really like to get more battery life outa my machine, so far ive gotten it up to 2hours, but i really need more for school, so even the extra ten minutes will help...

[glennzo]

I guess that if it's something that will give you more battery life then it's worth going for. I wonder though just how far you have to go with this so that it's really worth the effort.

[Fittersman]

yeah, so any ideas on how to get more battery out of my laptop? even if it isnt through powertop