My phone: Nexus 4 16GB
ROM: Stock 4.2.2
Kernel: franco kernel M2
-----------------------------------------
One of my CPU core is always running at 100% usage!
And the entire phone is very very hot even if I switch the screen off !
This is what I've seen:
<fig.1>
In System Monitor Lite:
I closed all apps, but CPU core 2(CPU1) is still keep running at 100%
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<fig.2>
But I cannot see any active app in System Monitor Lite.
<fig.3>
In OS Monitor, it shows that it's cause by System(PPID:0).
If I reboot my phone now, I can let my CPU back to normal.
But it will happen again in the future! (This is the third time.)
So I want to figure out what happened!
Can anyone help?
Thanks so much!
I would do a factory reset
Sent from my Nexus 4 using Tapatalk 4 Beta
Did you try clearing data in Franco's app?
Sent from my iPad 4
My phone now doesn't wake up even if I pressed the power button a hundred times...:crying:...
So I pressed 3-hardware-keys to do a hard reboot.
It may be normal for a couple days...
Zainiak said:
I would do a factory reset
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Yes, it will work definitely. But I'll never know what happened, and it might happen again in the future.
mitchdickson said:
Did you try clearing data in Franco's app?
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Click to collapse
I didn't. But I've just done clearing. Is it matter?
Thanks you guys anyway~
what governor are you using? and what are your governor settings?
simms22 said:
what governor are you using? and what are your governor settings?
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All in franco's M2 default. (Interactive)
scottnet said:
All in franco's M2 default. (Interactive)
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just for giggles, switch the governor to ondemand, deadline scheduler.. is that cpu still at 100%?
simms22 said:
just for giggles, switch the governor to ondemand, deadline scheduler.. is that cpu still at 100%?
Click to expand...
Click to collapse
I can't try [email protected]@...because it had a reboot...so CPU goes normal now...
But I think it would not solve the problem, there's still something(System) running in the background.
Tune the governor only affect the CPU frequency and how fast it process the dumb program.
My hypothesis.
Related
Look how the stepping .. I think an option which starts at 100MHz and limit at 1300MHz would greatly improve the battery..
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Sidneymac said:
Look how the stepping .. I think an option which starts at 100MHz and limit at 1300MHz would greatly improve the battery..
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Would it save that much, performing tasks would take longer so the proffit of a lower clockspeed is undone by a longer period of performance!
gee2012 said:
Would it save that much, performing tasks would take longer so the proffit of a lower clockspeed is undone by a longer period of performance!
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I don't think any delay would be noticeable ..
Sidneymac said:
Look how the stepping .. I think an option which starts at 100MHz and limit at 1300MHz would greatly improve the battery..
Click to expand...
Click to collapse
Battery savings would be negligible at best.
Race to idle is the most important thing, the faster a job gets done, the faster the CPU can go back to idle.
Sent via some sort of internet thing
gee2012 said:
Would it save that much, performing tasks would take longer so the proffit of a lower clockspeed is undone by a longer period of performance!
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Qft.
Sent from my GT-I9300 using Tapatalk 2
Sidneymac said:
I don't think any delay would be noticeable ..
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me 2 ...
Whats the status of kernels right now ? I honestly don't want to deal with the no wifi etc crap anymore.. I prepare something that works perfectly.
Eh? No wifi? What sort of kernel would that be?
Wifi works on all the kernels. Samsung released the kernel source code so everything works, but better.
Sent from my GT-I9300 using Tapatalk 2
A lot of people is suffering from wifi randomly disconnecting.very annoying.disabling wifi powersafe helpa little bit.but has be enabled on every reboot be cause it doesn't stick.
Nothing to do with kernel if its stock or custom.some users say changing from wpa2 to wpa and vise versa.
zodiaxe66 said:
A lot of people is suffering from wifi randomly disconnecting.very annoying.disabling wifi powersafe helpa little bit.but has be enabled on every reboot be cause it doesn't stick.
Nothing to do with kernel if its stock or custom.some users say changing from wpa2 to wpa and vise versa.
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From my experience kernels aren't stable sometimes..
Sidneymac said:
From my experience kernels aren't stable sometimes..
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Not every kernel is stable for everyone. You have to experiment
Sent from my GT-I9300 using Tapatalk 2
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guys i love creed's v3.5 do u guys xperiencd high ram usage in creed v3.5?
its always 160+ in my RAM.. isnt this gonna drain my battery?
what is underclock? and how to do it?
try to freeze some bloatwares and use task killer or manually closed the apps
Underclock=Underclocking, also known as downclocking, is the practice of modifying a synchronous circuit's timing settings to run at a lower clock rate than it was specified to operate at. It may be said to be the computer equivalent of driving a car below the speed limit. Usually, underclocking is used to reduce a computer's power consumption and heat emission, sometimes also to increase the system's stability and compatibility. Underclocking may be implemented by the factory, but many computers and components are end user underclockable.
its like our SGY has 832mhz processor
when underclock to 624mhz max and 312 min it saves more battery
how to do it?? use NO fRills or SET CPU app
your kernel must have governors like smartass and schedulers
and Hit thanks if i help
djvithin said:
View attachment 1242832
guys i love creed's v3.5 do u guys xperiencd high ram usage in creed v3.5?
its always 160+ in my RAM.. isnt this gonna drain my battery?
what is underclock? and how to do it?
Click to expand...
Click to collapse
its due to apps working in the background even if you did not use them,
make sure to identify which apps are using more ram in the background,
use google its your bestfriend
Go to settings> applications> running applications
Check which apps are using ur ram and are u really dont wanna use them
and freeze them
Sent from my GT-S5360 using xda premium
Does CPU-z report correct core useage?
Its saying my 3rd and 4th cores are not in use.. I run a game and switch the cpu-z and still says that...
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gd6noob said:
Does CPU-z report correct core useage?
Its saying my 3rd and 4th cores are not in use.. I run a game and switch the cpu-z and still says that...
Click to expand...
Click to collapse
core usage it reports right. then that game doesnt intensively use your cpu. it can also be the kernel that you are using, and how it works(if you are rooted).
Custom kernel?
Sent from my Nexus 4 using xda app-developers app
using franco.kernel running PA rom
then its probably the kernel and how it runs(or how its set up). if your game isnt suffering, i wouldnt worry about it.
Thanx for the help...
in the franco.kernel app, cores 3&4 does shows its offline.. I just cant find a setting or how to enable those cores..
Why does ur say Snapdragon 600?? :s .. Sorry but is Pro and 600 the same processor? :s
filthykid said:
Why does ur say Snapdragon 600?? :s .. Sorry but is Pro and 600 the same processor? :s
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Because Franco's kernel has overclock thus the app reporting its snapdragon 600
Sent from my Nexus 4 using Tapatalk 2
gd6noob said:
Thanx for the help...
in the franco.kernel app, cores 3&4 does shows its offline.. I just cant find a setting or how to enable those cores..
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Click to collapse
Its called hotplugging. The kernel offlines the cores when its not necessary. It onlines cores 3,4 when needed.
If you want to have 4 cores on at all times, then use his app to change the load. Not necessary to have all 4 on though, hotplugging is for battery purposes.
Can somebody help with this? I never install more than 15 apps and all of them are not battery drainers (no facebook, etc).
I never use GPS, brightness at minimum, background data disabled.
Tried different ROMS & Kernels - still the same. Even at 760mhz max. I get nasty battery drain - 1% on 2-3 minutes just reading a book. This is so not normal. Device is 5 months old, so battery should be proper. Here I attach some stats. I see Google Services Framework wakes up alot.
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What CPU Governor and Tegra 3 CPU Quiet Governor are you using? Even if you have set the max frequency to 760MHz, your battery would still quickly if the cores are unable to turn off and/or unable to scale the frequency correctly.
Username invalid said:
What CPU Governor and Tegra 3 CPU Quiet Governor are you using? Even if you have set the max frequency to 760MHz, your battery would still quickly if the cores are unable to turn off and/or unable to scale the frequency correctly.
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Currently touchdemand, but its same drain on ondemand, interactive and conservative. No idea about cpu quiet, using m-kernel with stock now.
Sent from my Nexus 7 using Tapatalk 2
Jack Barrett said:
Currently touchdemand, but its same drain on ondemand, interactive and conservative. No idea about cpu quiet, using m-kernel with stock now.
Sent from my Nexus 7 using Tapatalk 2
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CPU Governor determines the frequency of the core while the Quiet Governor determines on when the cores turn on/off.
Username invalid said:
CPU Governor determines the frequency of the core while the Quiet Governor determines on when the cores turn on/off.
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My current kernel doesn't show this, but I believe it was balanced when I was running Faux kernel. It was the same.
I've been on CM for a while now, and had a week back on TW, where i noticed the battery life to be four times better, so i'm wondering if theres a way to archive just half as good battery performance on an AOSP rom? that would really be wonderful.
-Moon
Moonystorm said:
I've been on CM for a while now, and had a week back on TW, where i noticed the battery life to be four times better, so i'm wondering if theres a way to archive just half as good battery performance on an AOSP rom? that would really be wonderful.
-Moon
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I get 5-6 hour screen on using Temasek.
Is this bad battery life?
nicholaschum said:
I get 5-6 hour screen on using Temasek.
Is this bad battery life?
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Nope, thats what i normally got with TW.
Whats your brightness setting? maybe mind sharing your kernel config also?
Moonystorm said:
Nope, thats what i normally got with TW.
Whats your brightness setting? maybe mind sharing your kernel config also?
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Set CPU for profiles, trickster for other governors.
40-50% brightness
nicholaschum said:
Set CPU for profiles, trickster for other governors.
40-50% brightness
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Thank you alot man! i just bought SetCPU, i didnt know it had these genius profile feature.
Thank you alot for sharing, I'll make great use of it.
Moonystorm said:
Thank you alot man! i just bought SetCPU, i didnt know it had these genius profile feature.
Thank you alot for sharing, I'll make great use of it.
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Yeah the profile feature really is a lifesaver. My Note can last the last 10% on standby overnight, and when I wake up I can continue charging.