Develop Bugs

[Q] WTF Dual Core?! *Clockspeeds*

so the Galaxy Nexus has a dual core 1.2ghz TI Omap right? thats 2 cores running at 1.2ghz each? or are the clockspeeds split between the cores?
using Kernel Tuner to manage my CPU speed i noticed that when i exit the CPU tab CPU1 goes offline until i hit CPU1 on/off. nice feature to be able to turn it on or off on the fly, but why isnt it on by default?
then after a while, even set to Performance mode and no matter what i set, my clockspeeds drop by half and fluctuate as if i have the governor set to Ondemand and again with only CPU0 activated slowing my phone down immensely!
im currently running Axi0m with Fancy Kernel but have noticed this on the included kernel and in EOS and SlimBean too.
its really annoying to watch Need for Speed Most Wanted fps drop gradually while racing, or even Into The Dead
is this my phone acting up or is this actually a Deep Sleep feature?

dragonhart6505 said:
so the Galaxy Nexus has a dual core 1.2ghz TI Omap right? thats 2 cores running at 1.2ghz each? or are the clockspeeds split between the cores?
Click to expand...
Click to collapse
Two 1.2ghz cores.
using Kernel Tuner to manage my CPU speed i noticed that when i exit the CPU tab CPU1 goes offline until i hit CPU1 on/off. nice feature to be able to turn it on or off on the fly, but why isnt it on by default?
Click to expand...
Click to collapse
This may be an app compatibility issue. From the market Application officially supports only HTC EVO 3D GSM/CDMA, however it might also work on other devices. Try a different app, Trickster Mod perhaps.
then after a while, even set to Performance mode and no matter what i set, my clockspeeds drop by half and fluctuate as if i have the governor set to Ondemand and again with only CPU0 activated slowing my phone down immensely!
Click to expand...
Click to collapse
This could be the app too. Performance governor should never fluctuate in speed. It should lock in at the top speed you have set, and never change from there. It could also be that you have something with profiles that changes your speeds/governors when certain requirements are met (under 50% battery underclock and use on demand governor).
is this my phone acting up or is this actually a Deep Sleep feature?
Click to expand...
Click to collapse
There are settings and governors that do disable a core when sleeping, or when not needed in hopes of saving battery. Most don't come with this enabled by default, as there are some folks that run into stability issues with those options.

cupfulloflol said:
Two 1.2ghz cores.
This may be an app compatibility issue. From the market Application officially supports only HTC EVO 3D GSM/CDMA, however it might also work on other devices. Try a different app, Trickster Mod perhaps.
This could be the app too. Performance governor should never fluctuate in speed. It should lock in at the top speed you have set, and never change from there. It could also be that you have something with profiles that changes your speeds/governors when certain requirements are met (under 50% battery underclock and use on demand governor).
There are settings and governors that do disable a core when sleeping, or when not needed in hopes of saving battery. Most don't come with this enabled by default, as there are some folks that run into stability issues with those options.
Click to expand...
Click to collapse
your right, Kernel Turner is "officially" only supported by HTC EVO 3d. ive used it on a bunch of other phones and never ran into any problems, like my Samsung Intercept and Evo Shift even an Exhibit 4g. will give Trickster Mod a go
by chance do you know if Axi0m rom has only 1 core enabled by default? i had noticed these sames fluctuations in it's built in CPU controller BEFORE i installed Kernel Tuner. actually this was the REASON i installed Kernel Tuner
also i dont have any profiles or apps set up to govern my CPU frequencies. literally have have 4 games, TerrariaHB and Kernel Tuner lol.

ok ive played around with it a little bit and still having the frequencies drop to 537 even with Trickster Mod, both cores are saying offline and i set frequency lock.
i had my phone set to 806mhz Performance, played with it for a few, come back and...well?

here it is AGAIN after just sitting there and clicking apply doesnt change it! i have to change the frequency then click apply and it does, but it only seems to for a few minutes

-_- im an idiot...
"Max Screen Off"

You will press v under status bar for apply with setting otherwise you will never stay at the same set than before
For apply at boot use settings > apply at boot
Don't use performance, it's useless and deprecated, use interactive instead
Inviato dal mio Galaxy Nexus con Tapatalk 2

[GUIDE] [ROOT] ExtremE Battery Life, ie Ultra power saving mode!

GUIDE TO EXTEND YOUR BATTERY LIFE UP TO THE LIMIT
20% Enough For A Day!​It is one of the best option if you left home with less juice, and are going to be in a trouble!
Yesterday, when I was on a trip with my friends, I forgot to charge my battery, and guess what: just 17% of juice left on my device at early 6 AM! So, I used this simple method, which I am going to explain down there, then while returning home at 9:30, 6% of juice was available!
The thins that I did was, listened to music for more than 10 hours (via earphones), Took photos for more than 15 mins (altogether), Surfed 3G for about 7-10 mins (on way back to home! ), and some phone calls!
Click to expand...
Click to collapse
App required:-
No-frills CPU Control: Most of the custom ROMs have this app integrated, but you can also download from Play store! https://play.google.com/store/apps/details?id=it.sineo.android.noFrillsCPU
STEPS:-
1. Go to No Frills Cpu Control or Cpu Settings(on most ROM's settings)
2. Select:
-Ondemand (Extreme Battery life)
-Powersaver/Conservative (Ultra Extreme battery, but laggy)
3. Tick Apply on boot and choose Apply!
4.Youre done, Enjoy ur maximum battery life!
-P.S: To have these governer, i.e. "ondemand/Powersaver/Conservative" you must be on Custom kernel bcoz, its not available for stock kernel!
Click to expand...
Click to collapse
Here's the pic of mine battery within 2 hours (27%-22%). And post your best battery status too!
Click to expand...
Click to collapse

Non Sense and Requires custom kernel

bt its too lag, and the cpu always 126 mhz

GalKill said:
bt its too lag, and the cpu always 126 mhz
Click to expand...
Click to collapse
Its for emergency, and you can use ondemand governer to reduce lags!
Ondemand governer takes phone to deep sleep while screen turned off, and required CPU value, when needed!

myaservip said:
Non Sense and Requires custom kernel
Click to expand...
Click to collapse
It works fine, give it a try during emergency!

i mean not suitable for all

myaservip said:
i mean not suitable for all
Click to expand...
Click to collapse
Indeed, It is not suitable for multi tasking

lionelsuyog said:
Its for emergency, and you can use ondemand governer to reduce lags!
Ondemand governer takes phone to deep sleep while screen turned off, and required CPU value, when needed!
Click to expand...
Click to collapse
well for your kind information all the governers (if have custom kernel) take phone to deepsleep while screen off. And as per your thread title i don`t think the guide is that effective becoz this governer thingy is known by almost every one here.Not trying to flame but just wanted to say that don`t open new threads for such known things.

stock kernel have 2 governor
bcm21553 and performance
this trik can be apply when we use custom kernel
i know about this long time ago
:cheers:

Shutdown cpu cores when low usage

I have been using Yureka for few days and see that cpu cores are always on, irrespective of load. Is anyone working on a kernel which can shutdown 4-6 cores when idle or when screen off? I think this would be great for batter.

Try Cpu Tuner, it has options for profiles and to turn off CPU cores after digging into some settings to enable it as far as i remember.

I am using it. However, the current kernel (as well as Sandy) does not support core shutdown so none of the apps have this option. CPU tuner will scale down frequencies to what i want but all 8 cores are always running.

Like this?

How did you shut down the cores please tell us..
Sent from my YU Yureka using XDA Free mobile app

Sudeep Duhoon said:
Like this?
Click to expand...
Click to collapse
bro how this possible ??

It is achieved with the help of CPU Tuner app. I am using it since I got my Yureka.

Jimmyz0r said:
It is achieved with the help of CPU Tuner app. I am using it since I got my Yureka.
Click to expand...
Click to collapse
CPU tuner is rooted or unrooted app??

Panneer Selvam said:
CPU tuner is rooted or unrooted app??
Click to expand...
Click to collapse
Rooted.

Thanks Bro...
Sent from my YUREKA using XDA Free mobile app

Can you share your configuration from CPU Tuner? I can't any option in cpu tuner to shut down cores. Only governors and their affinity settings.

rApt0r7 said:
Can you share your configuration from CPU Tuner? I can't any option in cpu tuner to shut down cores. Only governors and their affinity settings.
Click to expand...
Click to collapse
"Simple and Powerful" Config with "Power User" profile.

My CPU tuner was working in non power user mode . Thanks for the info. I can control cpu cores now.
Now only if someone makes a kernel with more governors and automatically shut down cores on low usage . It seem cpu tuner only allows me to set number of cores for a profile.

rApt0r7 said:
I have been using Yureka for few days and see that cpu cores are always on, irrespective of load. Is anyone working on a kernel which can shutdown 4-6 cores when idle or when screen off? I think this would be great for batter.
Click to expand...
Click to collapse
If I am wrong correct me, if I have understood what you are trying to say, you most probably wish to use the feature where the idle cpu cores are shutdown once the load is not that much.
In my knowledge, that's 'Hotplugging' right ?? coz it more or less does the same function. Try installing some custom kernel that provide you with some really good hotplugging governers. And coz the development for yureka is really in it's full form, there have been few kernels that have been posted in the "Original Android Development" section of our xda forums. Try going through them, you will find what you are looking for !

hkm93 said:
If I am wrong correct me, if I have understood what you are trying to say, you most probably wish to use the feature where the idle cpu cores are shutdown once the load is not that much.
In my knowledge, that's 'Hotplugging' right ?? coz it more or less does the same function. Try installing some custom kernel that provide you with some really good hotplugging governers. And coz the development for yureka is really in it's full form, there have been few kernels that have been posted in the "Original Android Development" section of our xda forums. Try going through them, you will find what you are looking for !
Click to expand...
Click to collapse
Yes sir, hotplugging kernel is what i am looking for. Last time i checked, there was just Sandy kernel which did not had this. It seems there are a couple more now . I will give them a shot and update.

rApt0r7 said:
Yes sir, hotplugging kernel is what i am looking for. Last time i checked, there was just Sandy kernel which did not had this. It seems there are a couple more now . I will give them a shot and update.
Click to expand...
Click to collapse
WHICH KERNEL u r using for hotplugging?

Why Cpu All Core Working Without Use Any App?

Cpu Every Core Working Without Use Any App in Recent List

It shows 633Mhz for me (first four cores)
which rom you are on ?
however background processes of Android do take cpu usage

YasuHamed said:
It shows 633Mhz for me (first four cores)
which rom you are on ?
however background processes of Android do take cpu usage
Click to expand...
Click to collapse
I Think Other Core Should Stop When Not Use Any App in Recent

I does not seem to work like that. I have never seen my Redmi having a single idle CPU core
Sent from my whyred using XDA Labs

RupeshRN said:
I Think Other Core Should Stop When Not Use Any App in Recent
Click to expand...
Click to collapse
You think wrong

RupeshRN said:
I Think Other Core Should Stop When Not Use Any App in Recent
Click to expand...
Click to collapse
stock min freq is little 633 mhz big 1130mjz
underclocked can go to 300mhz both big and little.
you mean a hotplug.. when not in use all cores off then whn input turn on... unfortunatelly theres no hotplug for 636.. as they say in kernel settings balme qualcomm

Is Redmi note 8 pro locked at 2 GHz normal?

i've been using this phone for about 2 years now and recently moved (about a few months ago) to using a custom rom (crdroid 7.1.2). it was running smooth and cool until day the clockspeed decided to lock itself at 2000 MHz (checked using cpu-z). I do not know if this is normal but the phone's temperature goes up to 36C on idle. i thought the problem was with the Lspeed app (+custom kernel) so i uninstalled it but it didn't work. I also factory resetting it, but still not luck. will updating the firmware resolve my issue? if not, what other available solutions are there?

have you thought about flashing the stock kernel ?

Fytdyh said:
have you thought about flashing the stock kernel ?
Click to expand...
Click to collapse
I have, but it still gets hot

do you use a case ? does your phone goes over 45 degrees celsius when charging ?

Fytdyh said:
do you use a case ? does your phone goes over 45 degrees celsius when charging ?
Click to expand...
Click to collapse
I do use a case, but hasn't been this hot before recently, and it does tend to hit 40C when charging

topsecretasian said:
I do use a case, but hasn't been this hot before recently, and it does tend to hit 40C when charging
Click to expand...
Click to collapse
If you are using Fast Charging, that heating is entirely normal (happens to me too)
But heating during idle is not normal. Try changing CPU governor to something else. (like schedutil or powersave)

Canny1913 said:
If you are using Fast Charging, that heating is entirely normal (happens to me too)
But heating during idle is not normal. Try changing CPU governor to something else. (like schedutil or powersave)
Click to expand...
Click to collapse
Do you know how to change cpu governor? I tried doing it last night but didn't find a whole lot of information. Schedutil seems to just set it all the way to 2ghz, so I want to change it to powersave

topsecretasian said:
Do you know how to change cpu governor? I tried doing it last night but didn't find a whole lot of information. Schedutil seems to just set it all the way to 2ghz, so I want to change it to powersave
Click to expand...
Click to collapse
use Rootify, select the CPU tab located at the top then change it.
The app sometimes gets stuck at Loading screen though.

Canny1913 said:
use Rootify, select the CPU tab located at the top then change it.
The app sometimes gets stuck at Loading screen though.
Click to expand...
Click to collapse
ok so it does work when i change the cpu govenor, but the only option that actually works is 'powersave' (as well as 'userspace'). all the other ones still sets it to 2GHz. 'userspace' seems to have a somewhat of an improvement but it's only setting everything to a constant value. is there a way have it set to balanced mode?

topsecretasian said:
ok so it does work when i change the cpu govenor, but the only option that actually works is 'powersave' (as well as 'userspace'). all the other ones still sets it to 2GHz. 'userspace' seems to have a somewhat of an improvement but it's only setting everything to a constant value. is there a way have it set to balanced mode?
Click to expand...
Click to collapse
powersave forces the processor to work in the lowest frequency availible, thus consuming less power.
userspace allows the app to set the CPU frequency whatever it wants. This isn't supposed to be used in Android since changing CPU speed thorough an app is super uncommon.
Others like ondemand normally keep the power low but starts using the higher frequencies if a processor intensive app is launched.
You can learn which governors do what in this post so you can set the most suitable one for you.
[REF][GUIDE]Saber's guide on CPU governors, I/O schedulers and more!
Collective guide of CPU governors, I/O schedulers and other kernel variables I present to you a wonderful collection of descriptions, comparisons and graphs of common kernel variables. Before continuing on the wonderful journey of Linux kernel...
forum.xda-developers.com

Canny1913 said:
powersave forces the processor to work in the lowest frequency availible, thus consuming less power.
userspace allows the app to set the CPU frequency whatever it wants. This isn't supposed to be used in Android since changing CPU speed thorough an app is super uncommon.
Others like ondemand normally keep the power low but starts using the higher frequencies if a processor intensive app is launched.
You can learn which governors do what in this post so you can set the most suitable one for you.
[REF][GUIDE]Saber's guide on CPU governors, I/O schedulers and more!
Collective guide of CPU governors, I/O schedulers and other kernel variables I present to you a wonderful collection of descriptions, comparisons and graphs of common kernel variables. Before continuing on the wonderful journey of Linux kernel...
forum.xda-developers.com
Click to expand...
Click to collapse
I see. Well I guess it does work as a solution.
Thanks for the help!