XO power consumption under 8.2-759

[Gary C Martin]

On 12 Sep 2008, at 10:57, John Gilmore wrote:

> I spent a few hours tonight testing the power consumption of a G1G1 XO
> under 8.2-759.  I didn't test any of the tricky autosuspend/resume
> stuff -- just how much power can be saved by various user actions.
> Both the answers, and how you can do measurements like this on your
> own XO (using the power-measurement chip in the battery) are here:
>
>  http://wiki.laptop.org/go/XO_Power_Draw

I just have a B4 here to test but I was curious to try some power  
measurement to see how they differed. I seem to have a slightly  
worrying status that's not listed on the wiki page. It's telling me  
"Discharging at critical levels". This is just a B4 8.2-759 sitting  
here unplugged, with no external peripherals or USB sticks attached,  
after a clean boot with no activities running, connected to a wireless  
AP.

[olpc at xo-05-24-02 shell]$ sudo olpc-pwr-log
Checking/waiting for a battery
Yah! Found one.
Reading eeprom data.
Starting log pwr-080912-155211-3eff00000000eaff.csv

1221234732,70,6258600,-1222005,2484,30854,Discharging at critical  
levels,0
1221234742,70,6287880,-989322,2482,30848,Discharging at critical  
levels,-2
1221234752,70,6287880,-996223,2480,30841,Discharging at critical  
levels,-5
1221234762,70,6287270,-995442,2486,30834,Discharging at critical  
levels,-8
1221234772,70,6287270,-993619,2480,30827,Discharging at critical  
levels,-11
1221234783,70,6254330,-985677,2484,30820,Discharging at critical  
levels,-14
1221234793,69,6251890,-995963,2486,30813,Discharging at critical  
levels,-17
1221234803,69,6287270,-1036067,2483,30806,Discharging at critical  
levels,-20
1221234813,69,6285440,-1027213,2482,30800,Discharging at critical  
levels,-22
1221234823,69,6286050,-995703,2485,30793,Discharging at critical  
levels,-25
1221234834,69,6282390,-986718,2485,30786,Discharging at critical  
levels,-28
1221234844,69,6282390,-996354,2482,30779,Discharging at critical  
levels,-31
1221234854,69,6282390,-997916,2484,30772,Discharging at critical  
levels,-34
1221234864,69,6283610,-997656,2483,30765,Discharging at critical  
levels,-37
1221234874,69,6281780,-1026692,2485,30758,Discharging at critical  
levels,-40
1221234885,68,6281780,-1037500,2488,30751,Discharging at critical  
levels,-43
1221234895,68,6276290,-1000781,2482,30744,Discharging at critical  
levels,-46
...

--Gary

P.S. Great little script BTW, hadn't noticed it before.