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Poll: Do you think its possible to overclock the N900?!
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Do you think its possible to overclock the N900?!

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arbitrabbit is offline arbitrabbit
2010-04-11 , 12:58
Posts: 171 | Thanked: 114 times | Joined on Feb 2010
#2271
Originally Posted by titan View Post
It would be nice if you guys could help stress testing those settings
as they could become the new default for OC/ULV kernels if they are very stable.
Battery life comparisons with stock and other OC kernels could be interesting.
Yup, I am already using those. By the way, reading through some OMAP3430 literature, it seems that ondemand is the preferred route for TI as the idle mode power consumption is extremely low and wake up latency is not very highy. That does make me wonder whether to use 125 or 250, but I guess a battery test would help with that.
 

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jcompagner is offline jcompagner
2010-04-11 , 13:00
Posts: 290 | Thanked: 165 times | Joined on Sep 2009
#2272
Originally Posted by titan View Post
It would be nice if you guys could help stress testing those settings
as they could become the new default for OC/ULV kernels if they are very stable.
Battery life comparisons with stock and other OC kernels could be interesting.
I am on the latest lv kernel and i run these settings:

echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load
echo 75 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
echo 150000 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
echo 124999 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
echo 899000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq


i have to say if i use that then conky if i dont do anything but just watch conky that i see even if the usage is between 4 and 12% the cpu freq is 900mhz
and by doing nothing else i see it jumping between 125mhz en 900mhz very often with cpu usage between those 4-12%
 
titan is offline titan
2010-04-11 , 13:05
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#2273
Originally Posted by arbitrabbit View Post
It also raises the question whether 125MHz is actually better than 250MHz
it might be better if we can use a lower voltage for 125Mhz than for 250.
 

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titan is offline titan
2010-04-11 , 13:07
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#2274
Originally Posted by arbitrabbit View Post
Yup, I am already using those. By the way, reading through some OMAP3430 literature, it seems that ondemand is the preferred route for TI as the idle mode power consumption is extremely low and wake up latency is not very highy. That does make me wonder whether to use 125 or 250, but I guess a battery test would help with that.
I agree. a battery test with [125,850] and [250,850] would be very interesting.
 
titan is offline titan
2010-04-11 , 13:08
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#2275
Originally Posted by jcompagner View Post
I am on the latest lv kernel and i run these settings:
i have to say if i use that then conky if i dont do anything but just watch conky that i see even if the usage is between 4 and 12% the cpu freq is 900mhz
and by doing nothing else i see it jumping between 125mhz en 900mhz very often with cpu usage between those 4-12%
that's expected with your 2nd ard 3rd setting
 
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RafaLL92 is offline RafaLL92
2010-04-11 , 13:17
Posts: 116 | Thanked: 77 times | Joined on Jan 2010
#2276
Could someone quite familiar with this thread sum up what has been going on throughout the last 1500 posts? I was away for a week and completely lost the track of it.

I have an overclocked n900 to 900Mhz since 04.04.10 and experienced nearly no problem at all - just a fast battery drainage the day before yesterday (from 63% to a dead battery in an hour or so).

Cheers,
Ralph
 
littlekiller is offline littlekiller
2010-04-11 , 13:21
Posts: 1 | Thanked: 0 times | Joined on Jan 2010
#2277
i have it overclocked to 900 mhz.. and i actually get better battery.. though i do use the DSP overclock, maybe that's got something to do with it?
anyways, i'm very happy with the overclock. browsing is snappier than at first.

Cheers everybody
 
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jcompagner is offline jcompagner
2010-04-11 , 13:24
Posts: 290 | Thanked: 165 times | Joined on Sep 2009
#2278
Originally Posted by titan View Post
that's expected with your 2nd ard 3rd setting
i wouldnt expect that at all when i read this:

http://www.pantz.org/software/cpufre...eqonlinux.html

i have set the sampling_rate to 150ms and the up_threshold is 75
so if i read it correctly that means that the average cpu usage in 150ms must be 75%
But it never is for me at least that is not what i see its almost idling between 4 and 12%

So i wouldnt expect it to be going up at all..
Or am i reading those values wrong?
 
Jokah is offline Jokah
2010-04-11 , 14:22
Posts: 53 | Thanked: 8 times | Joined on Apr 2010 @ Switzerland
#2279
titan your time_in_state script ain't working, when i execute it i get this:

Nokia-N900-51-1:~# ./time_in_state

Current frequency: 500 MHz

1200 MHz: overall 0.0 %, when not idle awk: cmd. line:1: Division by zero
1100 MHz: overall 0.0 %, when not idle awk: cmd. line:1: Division by zero
1000 MHz: overall 0.0 %, when not idle awk: cmd. line:1: Division by zero
950 MHz: overall 0.0 %, when not idle awk: cmd. line:1: Division by zero
124.999 MHz: overall 13.4 %
 
titan is offline titan
2010-04-11 , 14:32
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#2280
Originally Posted by Jokah View Post
titan your time_in_state script ain't working, when i execute it i get
it is eviljazz's script
 
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