[ltp] Maximum Battery Capacity of an T60 under Linux

[Florian Manschwetus]

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Laurent Gilson wrote:
> Hello,
> 
>>> Do the cores reach C4 or deeper ?
>>
>> Yes. I saw C3, C2 and C1.
> 
> Deeper, like C4, C5, C6, C7, C8 ... (higher number => better powersaving)
> 
cat /proc/acpi/processor/CPU0/power
active state:            C3
max_cstate:              C8
bus master activity:     00000000
states:
     C1:                  type[C1] promotion[C2] demotion[--] 
latency[000] usage[00000010]
     C2:                  type[C2] promotion[C3] demotion[C1] 
latency[001] usage[00196839]
    *C3:                  type[C3] promotion[--] demotion[C2] 
latency[017] usage[00341561]

here it isn't listed what should be enabled in kernel?

Florian
>>> For all i know even 2.6.17 cannot do these two things (unless you unload
>>> USB and wireless). Windows can (there is a patch released 4-6 months 
>>> after
>>> CoreDuo was launched). I think of that as a problem.
>>
>> usb and wirdeless are turned on (and are both used) in this setup.
> 
> ? Oh, cool.
> 
> Did you patch anything ?
> Which WLAN-driver are you using ?
> Did you play with the beacon-interval ?
> Do you have USB2-like performance ?
> Do you have GLX (3D in Xorg) loaded ?
> 
>> t60p:/proc/acpi/processor/CPU0 # uname -a
>> Linux t60p 2.6.17.3-default #6 SMP Thu Jul 6 22:57:50 CEST 2006 i686
>> i686 i386 GNU/Linux t60p:/proc/acpi/processor/CPU0 #
> 
> hmmm. I will uppgrade to that kernel next weekend.
> 
> Thanks
> --The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> 
> 


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