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to Maemo 7 / Leste by teroyk - 3 days, 1 hr ago - more...
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2010-04-12
, 22:39
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Posts: 1,751 |
Thanked: 844 times |
Joined on Feb 2010
@ Sweden
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#2542
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Originally Posted by moshikko
You should try the new XLV-kernel.
ULV & LV by titan
I discovered something about my device : using the ULV kernel it bricks when using the 850Mhz max freq but boots up normal when raising it up to 900Mhz.
been using it for almost half an hour now and it is stable.
on the other hand the LV kernel works great at any speed - so going back to the LV kernel
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2010-04-12
, 22:43
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Posts: 1,751 |
Thanked: 844 times |
Joined on Feb 2010
@ Sweden
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#2543
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Originally Posted by Rushmore
This howto is great in answering questions
I currently use a normal volt 125~800 kernel. It has been very stable, so I am wondering if any advantage in the newer kernels?
BTW, when 1.2 is finally released, will it be safe to update with the current kernel, or will I need to go to the "stock" first?
I installed my kernel using the N900's Xterm, rather than Flash 3.5. My info shows complete, where as some lost their "about" info.
I would recommend the lv-kernel to start with. I think it's the most stable one. If you want to save more battery you could try the xlv-kernel. Set the max_freq in /etc/pmconfig low at starters and try new mhz with the "temp command" before you settle with one permanent.
A good one for you might be setting the min_freq to 250000 and the max_freq to 810000.
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2010-04-12
, 22:47
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Posts: 22 |
Thanked: 15 times |
Joined on Apr 2010
@ Israel
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#2544
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Originally Posted by AlMehdi
I'll give it a try to see if my device can support it
You should try the new XLV-kernel.
I hope it can
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2010-04-12
, 22:52
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Posts: 1,751 |
Thanked: 844 times |
Joined on Feb 2010
@ Sweden
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#2545
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Originally Posted by moshikko
Start with the max_freq on 810mhz and then test the other frequencies with the "temp command". That is how i did it. I have noticed it can be unstable for me on the higher frequencies.
I'll give it a try to see if my device can support it
I hope it can
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2010-04-12
, 22:55
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Posts: 324 |
Thanked: 65 times |
Joined on Jun 2008
@ FL
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#2546
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Originally Posted by rpgAmazon
ok im confused...
So hard to choose!
Today with ideal kernel, max frec=950... 2 batteries at work (8 am unplugged from car, 2:30 battery change, 7 pm plugged again)
With Lehto 125-950-500, a day without change of battery.
I can assume than user habits are delimiting battery life, anyway, nv kernel beating xlv... how is it possible? If 500 xlv=125 nv, and Lehto 950 ov> ideal 950 ov... ¿?¿?¿?¿
So again reinstaling 125-950-500... I'm getting crazy!!
125-950-500 lehto meaning:
125 low
950 max
500 is what?
sorry noob
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2010-04-12
, 23:02
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Posts: 171 |
Thanked: 114 times |
Joined on Feb 2010
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#2547
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Here is a script that I hacked together from the original script by rooted to measure the actual time that the CPU is running, including idle mode.
Code:
#!/bin/sh
awk '{print "\nCurrent frequency: "$1/1000" MHz\n"}' /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
awk '{print "Minimum frequency: "$1/1000" MHz\n"}' /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
awk '{print "Maximum frequency: "$1/1000" MHz\n"}' /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
tis1=`awk '{SUM += $2} END {printf("%.0f",SUM/1000)}' /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state`
idle0=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state0/time`
idle1=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state1/time`
idle2=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state2/time`
idle3=`awk '{printf ("%.0f",$1/1000)}' /sys/devices/system/cpu/cpu0/cpuidle/state3/time`
totaltime=$(($idle0+$idle1+$idle2+$idle3+$tis1))
echo -e "FREQUENCY\tUSED"
awk '{printf (($1/1000)" MHz \t")};{if ($2 == 0) printf "0 %\n"; else printf ("%.3f %\n",($2/10)/"'"$totaltime"'")}' /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state
echo ""
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2010-04-12
, 23:02
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Posts: 362 |
Thanked: 113 times |
Joined on Feb 2010
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#2548
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Originally Posted by iceman600
dsp i guess
ok im confused...
125-950-500 lehto meaning:
125 low
950 max
500 is what?
sorry noob
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2010-04-12
, 23:03
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Posts: 22 |
Thanked: 15 times |
Joined on Apr 2010
@ Israel
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#2549
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Originally Posted by AlMehdi
ok i'm not sure about stability ( it's on for less than 5 minutes ) but the device is on and runnig
Start with the max_freq on 810mhz and then test the other frequencies with the "temp command". That is how i did it. I have noticed it can be unstable for me on the higher frequencies.
i was able to go up to 900Mhz but i don't wanna take it any higher
now i'm gonna let it run for few minutes (idle) and then use it with web, media, games etc. to see if it is stable
thanks for the advice
Update : worked great for web, games but playing video made it reboot by itself
gonna try lowering the freq and check it again
Last edited by moshikko; 2010-04-12 at 23:16.
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2010-04-12
, 23:13
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Posts: 946 |
Thanked: 1,650 times |
Joined on Oct 2009
@ Germany
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#2550
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the customizable voltage kernel is ready:
online tweaking of voltages is done with
The meaning of the voltages (first column):
I have verified that the customized voltages are actually used.
feel free to play with it.
I'm now uploading it to extras-devel.
XLV is: "30 20 30 33 38 38 45 45 48 48 54 54 60 67 72"
ideal: 30 30 30 30 33 38 45 45 48 48 54 54 60 67 72 (first three ignored)
ULV: 25 25 25 33 38 38 45 45 48 48 54 54 60 67 72
LV: 30 30 38 48 48 54 54 54 54 54 54 54 60 67 72
Last edited by titan; 2010-04-12 at 23:35.
Code:
wget http://maemory.com/N900/overclock/generic/kernel-maemo_2.6.28-maemo21_armel.deb wget http://maemory.com/N900/overclock/generic/kernel-modules-maemo_2.6.28-maemo21_armel.deb wget http://maemory.com/N900/overclock/generic/kernel-flasher-maemo_2.6.28-maemo21_armel.deb
Code:
# cat /sys/power/sr_vdd1_opps_vsel 30 30 38 48 54 48 60 60 60 60 60 60 60 67 72 echo "30 30 38 48 54 48 60 60 60 60 60 60 60 67 72" > /sys/power/sr_vdd1_opps_vsel
Code:
stock/normal kernel 30 = 0x1e = 0.975V x 0 MHz = 0 30 = 0x1e = 0.975V x 125 MHz = 119 38 = 0x26 = 1.075V x 250 MHz = 289 48 = 0x30 = 1.200V x 500 MHz = 720 54 = 0x36 = 1.275V x 550 MHz = 894 60 = 0x3c = 1.350V x 600 MHz = 1094 60 = 0x3c = 1.350V x 720 MHz = 1312 60 = 0x3c = 1.350V x 750 MHz = 1367 60 = 0x3c = 1.350V x 810 MHz = 1476 60 = 0x3c = 1.350V x 850 MHz = 1549 60 = 0x3c = 1.350V x 900 MHz = 1640 60 = 0x3c = 1.350V x 950 MHz = 1731 XLV kernel: 30 = 0x1e = 0.975V x 0 MHz = 0 20 = 0x14 = 0.850V x 125 MHz = 90 30 = 0x1e = 0.975V x 250 MHz = 238 33 = 0x21 = 1.012V x 500 MHz = 513 38 = 0x26 = 1.075V x 550 MHz = 636 38 = 0x26 = 1.075V x 600 MHz = 693 45 = 0x2d = 1.163V x 700 MHz = 946 45 = 0x2d = 1.163V x 750 MHz = 1014 48 = 0x30 = 1.200V x 810 MHz = 1166 48 = 0x30 = 1.200V x 850 MHz = 1224 54 = 0x36 = 1.275V x 900 MHz = 1463 54 = 0x36 = 1.275V x 950 MHz = 1544 60 = 0x3c = 1.350V x 1000 MHz = 1823 67 = 0x43 = 1.438V x 1100 MHz = 2273 72 = 0x48 = 1.500V x 1150 MHz = 2588
feel free to play with it.
I'm now uploading it to extras-devel.
XLV is: "30 20 30 33 38 38 45 45 48 48 54 54 60 67 72"
ideal: 30 30 30 30 33 38 45 45 48 48 54 54 60 67 72 (first three ignored)
ULV: 25 25 25 33 38 38 45 45 48 48 54 54 60 67 72
LV: 30 30 38 48 48 54 54 54 54 54 54 54 60 67 72
Last edited by titan; 2010-04-12 at 23:35.
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All times are GMT. The time now is 13:31.
BTW, when 1.2 is finally released, will it be safe to update with the current kernel (on device now), or will I need to go to the "stock" first?
I installed my kernel using the N900's Xterm, rather than Flash 3.5. My info shows complete, where as some lost their "about" info.
Last edited by Rushmore; 2010-04-12 at 22:40.