I have used all kernels for my S4 GT I9505 all of them have this problem, i set max frequency to 1350 let's say, and it doesn't work, max is still 1890, it doesn't matter what app I use to tune cpu, only KT kernel works, but it is also the only kernel, that makes my phone reboot after heavy usage, all other kernels like Googy Alucard Taxeltop and so on, can not cap cpu limit, but they don't make my phone reboot after heavy usage, let's say 3 races one after another in Need For Speed Most Wanted... Solutions???
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So I have tried several Kernels over the last 6 months or so. I did not always have SetCPU on my Vibrant so never noticed what the Minimum clock speed was on most Kernels. I recently test drove the new DOW kernel and installed SetCPU to mess around with OC. I went back to what was my daily driver kernel KA7 W/Voodoo. Then I noticed KA7's minimum clock speed was set at 100 MHz?
I have read that some phones have a hard time waking up at 100 MHz. KA7 has been the best performing kernel I have used to date. Battery life has been amazing and never had a wake issue. Is this just a similar situation with OC kernels some processors can run at a lower clock speed then others and also is it normal for the stock kernels to have a minimum clock speed of 100MHz?
Thanks in advance for any info on this subject...
Yes it is normal.
OC Kernels work differently. Some will allow 100Mhz. Others have problems with 100Mhz and can only go down to 200Mhz. It's about the same thing as far as you and your phone are concerned. You won't notice it and neither will your battery.
Is this possible on Androids (mostly, this phone?) Before this I had a windows phone and I had a software where I could set a minimum and maximum cpu clock rate.. and then it will overclock dynamically as needed! If you are running a game and it needs more power, it will overclock it while the game is running.. dynamically without you having to change the clock-rate manually.
This will solve battery life problems when overclocking to 1.8ghz. There is no need for it to be draining the battery at 1.8ghz if you are only texting and probably even a 200mhz cpu can do that lol
Hope what I said makes sense.
it's easily done by installing Setcpu,provided that your phone has been rooted and kernel modded to allow overclocking.
Sent from my IDEOS X5
Actually it is already done in stock ROM without root, setCPU provides a way to change the default way of handling the CPU frequencies and governors.
The stock ROM comes right out of the factory can do "cpu stepping" itself, just like the intel "Speedstep" thing. But the factory powersaving profile (or if you wish to call the scaling) might not match our taste. Then there it comes the apps called Setcpu which enhances the cpu stepping behavior according to our preference. The enhancement considers the frequency of sampling cpu load, thresholds modifications, and other considerations.
In Setcpu, we can accord one of the following scaling setting that suits our taste. From my experience, each scaling setting behaves as follows:
ondemand - runs at Min or at Max (eg. 200 MHz or 1200 MHz)
interactive - adjusts frequencies according to the real load
conservative - behaves like "interactive" but incline to power saving
performance - always runs at Max
powersave - always runs at Min
userspace - disables Setcpu scaling and uses stock scaling
smartass - behaves like "interactive" but always runs at Min when LCD screen is off
And again, the phone must be rooted and kernel modded for Setcpu to work properly.
I've been using setcpu with conservative. I like conservative because it gives you a lot of control over the throttling of the cpu. It seems to work pretty good.
Are you getting any benefit from overclocking to 1.8GHz? I also overclocked to 1.8GHz, but I didn't see any noticeable improvement past 1.0-1.2GHz.
I like to use interactive Cox I enjoy the fast sampling rate and hence the high responsiveness.
Sent from my IDEOS X5
Personally I have not tried overclocking yet.. still need to update the kernel, but I'm afraid it might get unstable.
Didn't know that CPU could do it dynamically using different profiles.
Thanks all for the help
Tcm9669 said:
Is this possible on Androids (mostly, this phone?) Before this I had a windows phone and I had a software where I could set a minimum and maximum cpu clock rate.. and then it will overclock dynamically as needed! If you are running a game and it needs more power, it will overclock it while the game is running.. dynamically without you having to change the clock-rate manually.
This will solve battery life problems when overclocking to 1.8ghz. There is no need for it to be draining the battery at 1.8ghz if you are only texting and probably even a 200mhz cpu can do that lol
Hope what I said makes sense.
Click to expand...
Click to collapse
I have setcpu but the x5 is not listed....??
Can someone please suggest an overclocking range for use with setcpu? Id like to gain some extra performance and dont mind a higher battery drain,but I am concerned about going too high and cooking the tablet
Any suggestions would be appreciated, thanks!
i believe you need a custom kernel or ROM to overclock; SetCPU will definitely let you underclock just rooted.
Once you have a kernel w/ OC enabled, I'd suggest starting with 1400MHz, then load a cpu-intensive game & play for 30mins or so. If SetCPU doesn't show the temps going north of, say, 110F/43C, increase the max speed by 100, repeat until temps get past your comfort zone, then drop back to the prior setting.
I was unable to find a max suggested temp range for Tegra2, so you may want to err on the side of safety and/or comfort and aim for a lower max temp.
As stated above you need a custom kernel to overclock, but it isn't rom related at all. I have been running mine sense i was able to load a custom kernel at max freq 1,504 Ghz and min 216 Mhz and have never had a problem at all. Using setcpu you can set profiles to save battery life, like screen off profiles and also use different governors to help battery life. I usually just leave my governor set to ondemand and can't complain about battery life or over heating.
thank you to you both! Much appreciated
Hello,
Wondering if someone could help me. I am trying to optimise my battery usage to get the most out of my phone without affecting much functionality. To that end, I use Greenify and Xposed modules like recent apps cleaner.
Yesterday I was playing with undervolting using Rom Toolbox pro. I undervolted all cores by 75mV each.
After that i started playing Real Racing 3 to check if the phone was still operating smoothly. The game froze , so i closed it and checked the CPU states to see which frequency the game was running on most.
I found out that, most of the time, real racing 3 operates at a maximum of 1400 MHz frequency, no more. I then increased the voltage of 1200, 1400 and 1600 Mhz cores by 25 mV each. Again I played real racing 3. This time the game ran smoothly, but afterwards, when i checked the CPU stats again, i saw that the game was now also using 1600 Mhz and 1900 Mhz (for a very few seconds out of the 7 minutes i played it) frequencies.
So my question is:
If we undervolt the phone, would it simply make applications use higher frequencies so that they get their required voltage?
If they use higher frequencies on an undervolted phone, will it have any adverse effect on battery life as compared to using original frequency at original voltage?
What would be the best way to control this situation so that i can undervolt my phone for normal use, but use higher voltages when running certain apps? Xposed modules like per app performance controls only allows us to change the frequencies and governors per app, not the kernel voltage.
thanks for reading and hope there is someone here who can teach me on how to control my voltages better.
cheers!:good:
geowolf1000 said:
Iarge amount of cpu which are enable by default can modified if you do not want extra press the stock pefomance per app at setings
Is was too on cm.12 nightles too but has optoon
Now disable it
IMPORTAMD
FIRST TIME BREAKS DIALER
ONLY REBOOT IS FINE!!
Download an cpu tool you preferp
I downloaded from here
Set to 300 minimum
Get userspace And linux governor cfq.
Set on boot .
Try it .
Noop breakes wifi
Click to expand...
Click to collapse
:good::good:
+50 mA battery power less
Watt?
No need to post
Last battery issue was less than 30 mA and consume your batterry
In one day
Default cyanogen clocks is 1572 minimum....
Perfomance will not affect
Has only stable little heat all the time
And sweater heat with full sensors awake
Lte.,nfc , bluetooth...and calls with proximityis bigger
Heater but not so obvious from previous sudden
Real hot Situations.
Is this battery saver app ?
The minimum frequency is so high because the stock kernel is using MPDecision as the hotplug. This boosts the minimum frequency when you use your phone to the 1.5 GHz frequency. When you dont use your phone that intensively it clocks itself down to lower frequencies. No need to put the min freq to 300 MHz, because it already is, it just says 1.5 GHz because of the hotplug :good:
mumaster20 said:
The minimum frequency is so high because the stock kernel is using MPDecision als the hotplug. This boosts the minimum frequency when you use your phone to the 1.5 GHz frequency. When you dont use your phone that intensively it clocks itself down to lower frequencies. No need to put the min freq to 300 MHz, because it already is, it just says 1.5 GHz because of the hotplug :good:
Click to expand...
Click to collapse
When?
The apps in background still runing and if they are in background the cpu still hold same frequencies as minimum.
geowolf1000 said:
When?
The apps in background still runing and if they are in background the cpu still hold same frequencies as minimum.
Click to expand...
Click to collapse
Only when you touch the screen and a little while after that the min freq will be 1.5GHz, after that it chenges back to 300 MHz, thats how MPDecision works!
mumaster20 said:
Only when you touch the screen and a little while after that the min freq will be 1.5GHz, after that it chenges back to 300 MHz, thats how MPDecision works!
Click to expand...
Click to collapse
I will collect you the cpu stats with and op settings for all day
Perfomance will be same and post it after for more .
So the stats show that profile per app keep device at 1452mhz double time than without
I examine with same settings almost same hours and almost same usage
The white background screenshots is without
The black background is with
My perfomance is absolute same i only feel diference at low battery level
Lower than 8% at wake up
Ps there is a bug when change this settings
Battery show always awake device but is false
After full charge and shutdown all normal