maemo.org - Talk - View Single Post - [ANNOUNCE] Speed Patch + Battery Patch + Tweaks --> Everything Needed To Have A Perfect N900

	carbonjha	2011-12-08 , 10:38
	Posts: 83 \| Thanked: 71 times \| Joined on Jul 2011 @ Dhaka	#2794

@karam
I found some linux governor tweaking tips in this website. http://www.ibm.com/developerworks/li...req-3/?ca=drs-

Its a very long and detail guide with lots of comparing graphs. I couldn't read the full guide. But it concludes with tweaking the conservative governor's up & down threshold which seems to have a significant effect on battery saving.

"overclock" profile of batterypatch uses conservative governor. I wasn't using it for a while because I changed it to ondemand. But today I thought about giving it a try. Then I find that first time the conservative governor loads with its default parameters ignoring the "overclock" profile & always remains that way.

Code:

up_threshold = 80
down_threshold = 20
freq_step = 5
ignore_nice_load = 0
sampling_down_factor = 1 
sampling_rate = 3000000
sampling_rate_max = 1500000000
sampling_min = 1500000

now Im testing these tweaks

Code:

echo 98 > /sys/devices/system/cpu/cpu0/cpufreq/conservative/up_threshold

echo 95 > /sys/devices/system/cpu/cpu0/cpufreq/conservative/down_threshold


echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/conservative/ignore_nice_load

underclock profile uses ondemand governor and it loads ok. so no need to change that. Lets hope it works well.

__________________
kernel-power v52
N900 rocks

http://n900world.blogspot.com/

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