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[Q] CPU usage monitor app (with dual core support): can we trust it?

So I bought the application
CPU usage and Frequency Monitor (dual core support)
It's on the market, and you can find its thread here at xda:
http://forum.xda-developers.com/showthread.php?t=1160319
The dev says there a limitation for the Sensation, but I bought it anyway:
****** NOTE ******
HTC Sensation Owners
There is a device limitation with reading the CPU Frequency. I am looking into a workaround for this problem.
****** NOTE ******
Click to expand...
Click to collapse
I asked the question in the dev thread, hopping for a fast answer,but want to ask here too:
Can we trust the CPU usage, individual for each core, that is displayed by the app????
This app displays, at the top of the screen, in the notification bar, what core is used, with one column for each core
So with our asynchrone dual core, one of the column is often empty, when the other can be half full, or full, in normal use, this seem to be OK (even if the used freq for each core is not read, as the dev says, but is the usage correctly read??)
But I noticed the second column, so second core, very often starts filling too!
I used to think Android 2.3 is not supposed to handle dual core, so that almost all the time, only one is used????
That was for me, and for what I've read, the big reason why we have really bad scores on every benchmark?
If CPU monitor is right, I can see the second core easily waking up when the first one is already full, sometimes just a little, sometimes 50%, sometimes 100%
INCLUDING DURING BENCHMARKS where CPU monitors displays both cores running at 100%!!!!
So what is true here? Is CPU monitor fooled by Android 2.3 and shows the second core waking up when it's not?
Or does indeed our second core easily wake up, including in benchmarks, meaning our pittyful scores will never be greatly improved since both cores already release their power??
Need more infos on these asynchrone dual core, the way they work and are supported by Android 2.3, what HTC did to implement this, etc

Not a single answer from a dev of someone with more knowledge than me concerning dual core architecture and the way Android can handle it?
I had an answer from the dev of CPU usage monitor:
The CPU usage information is abstracted in both cases at the App level. Apps just need to read the standard CPU usage information at the OS level to gather its data. Control of when and how the dual core magic works is not a worry at the app level since the OS handles it. Hope this helps.
Click to expand...
Click to collapse
So...........
=> In normal use, the app shows one core only running, very low if no app running, sometimes when the first one is full, the second one starts working a little after the first one is full, 10%, 25%, etc, for apps requiring a little more power, everything seems very logical for an asynchrone dual core CPU (wasn't I told that Android 2.3 doesn't really manage async dual core???? When we overclock, don't we overclock only one core?)
But when doing a Benchmark, or playing heavy openGL games, the app displays that both core run at 100%, CPU at its max power for both cores!
So if it is, even with a better rom once S-OFF or better drivers, our bench scores will always be very low
I need this to be confirmed or not, if we already have both cores running at 100% during bench or openGL games, we can't expect much more from our Sensation :-(

I'd be interested to understand this also.
I appears that the Gingerbread doesn't support Dual-Cores properly.
Have a look at: http://groups.google.com/group/android-platform/browse_thread/thread/b754408b9af17e55?pli=1
I guess we need an upgraded Kernel and associated libraries. I must admit I was surprised when I started looking.

[Q] help kernel mod

Hello everyone I wanted to ask a question, you can modify the kernel starting from the stock rom or nandroid backup?
I installed the rom ployer momo 9 iii stock taken from the official site
on the mediacom 706
is already much more powerful but I would like to change the cpu frequency
and I could use a kernel mod
if you need I can nandroid backup and rom
Product Type Tablet
Android OS 4.0
screen
Type 7 "
Resolution 800 x 480
Touchscreen Multi-Touch
processor
Cortex-A8/chipset allwinner a13
Clock frequency of 1 GHz
Memory
Memory 4 GB integrated
RAM 512 MB ​​- DDR3 SDRAM
Supported Flash Memory Cards microSD, microSDHC
Max Supported Capacity 32 GB
multimedia
Mali 400 graphics card
Audio Microphone, stereo speakers
Expansion and Connectivity
Interfaces 1 x Mini-USB
battery
Technology Lithium polymer
Capacity 3000 mAh
miscellany
Features Capacitive Touchscreen
sorry for my English I use a translator
thank you for everything you soon
Sent from my SmartPad 706th with STOCK ROM PLOYER MOMO9-3

Help me:'(
Sent from my MOMO9-3 using xda app-developers app

My processor is slower than it should be!

I bought the phone today, but I think it's way slower than it should be. I know that the LG G Flex 2 has a Qualcomm Snapdragon 810 with 2.0 GHz quad core and a 1.5 Ghz quad core (octa core) CPU, but after i have runned a couple of benchmark tests in Antutu, I got a score between 35000 to 40000! That's way slower than Samsung Galaxy S5's Snapdragon 801! I thought that it whould get a score over 50000 When I see info about my CPU in Antutu after bemchmark test, it stands that the first four cores has a frequency of 1.5 GHz, while the other four cores has a frequency of 0.9 GHz (two of them are "sleeping" a lot)! Is it possible to fix that? I hope so. I've got the 16GB version with 2GB of DDR4 RAM. The device is upgraded to 5.1.1 Lollipop. (Sorry for bad English, I'm from Norway)

ali_mohamad said:
I bought the phone today, but I think it's way slower than it should be. I know that the LG G Flex 2 has a Qualcomm Snapdragon 810 with 2.0 GHz quad core and a 1.5 Ghz quad core (octa core) CPU, but after i have runned a couple of benchmark tests in Antutu, I got a score between 35000 to 40000! That's way slower than Samsung Galaxy S5's Snapdragon 801! I thought that it whould get a score over 50000 When I see info about my CPU in Antutu after bemchmark test, it stands that the first four cores has a frequency of 1.5 GHz, while the other four cores has a frequency of 0.9 GHz (two of them are "sleeping" a lot)! Is it possible to fix that? I hope so. I've got the 16GB version with 2GB of DDR4 RAM. The device is upgraded to 5.1.1 Lollipop. (Sorry for bad English, I'm from Norway)
Click to expand...
Click to collapse
i got mine at Tuesday. I can pretty much say i never experienced a lag before even tho i had many apps in the recent apps tab and also i was playing high quality games and it got a little bit hot but still it was working flawless, very very fast. What i did after i updated to 5.1.1 i did a factory reset, then i downloaded only the apps that are indeed from lg apps such as calculator downloads quickremote (because most of them are useless and slow down the phone) and then i downloaded a custom launcher and greenify. Also use the google keyboard from google play store. better to use google's apps rather than lg's. Since then i never experianced any lag before. try it out. If u need more help tell me

That is really low. Go into settings and into battery saver and check if you maybe turned it on, and also see if you checked option to optimize battery in games.
Try restarting the phone and run antutu again, after a couple of minutes..
Sent from my LG-H955 using XDA Free mobile app

You are from a cold country so it should help. First try let rest the phone and launch antutu when it's at room temperature.
Then try with an ice pack on the back. It can be ice pack for injuries (kind of thick gel in plastic bag) or for cool box or ice chest, whatever you call it. But don't use it too long, you may have condensation inside the phone and it will trigger the humidity sticker (for your warranty).
Don't launch antutu after a reboot, as it's warm after a reboot. Or reboot and let it cool down first.

[Completed] Battery problem on Alcatel OneTouch Pop C7 [CLOSED ]

Hi,
I got an Alcatel OneTouch Pop C7 with current specification :
Brand Alcatel
Model One Touch Pop C7 7041X
Also known as Alcatel Pop C7 7041X, Alcatel OneTouch Pop C7 OT-7041X
Operating System Android 4.2.2 Jelly Bean
CPU / Processor MediaTek MT6582M / ARM Cortex-A7
Processor Clock / Cores 1300Mhz 32bits Quad-Core
RAM Memory 1GB LPDDR2
GPU Graphical Controller ARM Mali-400 MP2
Internal Storage 4GB (2GB user available)
External Storage Until 32GB microSD, microSDHC
The phone works great but for unknown reasons the battery don't charge.
I even changed the battery and the Charge jack but still the battery don`t get charged ...
Curiously, the phone shows that the battery is charging
Any ideea on fixing this...could this be an software or hardware issue?
Thank you for your assistance.

update
I used SP Flash tool and upgrated the phone to kitkat 4.4.2 and i putted to be charged...
1th test with phone running..
The battery have 2% at that time...and after 12h the battery was 47%. Normaly its charged in 3-4h
2th test with phone shutdown..
After 2h on charging battery stayed at 10%...but the phone shows that is charging..
My conclusion is that the the phone have some hardware problem...
Consider this topic closed

PX5 4 cores running at 1.5Ghz 4 running at 1.2Ghz

As the title says, I've noticed with my Witson module PX5 - 4 cores are running at 1.5Ghz and 4 are running at 1.2Ghz, using "Kernal Adiutor" I can't select anything higher for those cores. Could this be due to the binning process and I got a lemon or is everyone's like that? I know that with PC GPUs if the chip isn't quite up to quality they will clock them lower and sell them as a lower model.

bjt2 said:
As the title says, I've noticed with my Witson module PX5 - 4 cores are running at 1.5Ghz and 4 are running at 1.2Ghz, using "Kernal Adiutor" I can't select anything higher for those cores. Could this be due to the binning process and I got a lemon or is everyone's like that? I know that with PC GPUs if the chip isn't quite up to quality they will clock them lower and sell them as a lower model.
Click to expand...
Click to collapse
Just to answer my own question, it seems ARM processors often have what's called a "big.LITTLE" configuration where 4 powerful cores are for heavy duty work, and 4 smaller cores are for low power tasks to help battery life https://developer.arm.com/technologies/big-little
If the usage falls below a threshold it will migrate the whole thread to the smaller cores and vise versa