Database Users

Only 4 cores are used

Hello,
I have a peculiar problem with my OnePlus Two
The faster A57 cores don't get activated, I have tried using Antutu, played Asphalt 8 And NFS NL for hours.
But the cores just won't get triggered
I'm using A1 CPU tool to monitor the same.
Even CPU Z wouldn't show me any activity on the other 4 cores while Antutu was running.
Any ideas? It's brand new can be returned
Oxygen OS - 2.1.1
A2003_14_151011
Sent from my C6602 using XDA Free mobile app

Denhot said:
Hello,
I have a peculiar problem with my OnePlus Two
The faster A57 cores don't get activated, I have tried using Antutu, played Asphalt 8 And NFS NL for hours.
But the cores just won't get triggered
I'm using A1 CPU tool to monitor the same.
Even CPU Z wouldn't show me any activity on the other 4 cores while Antutu was running.
Any ideas? It's brand new can be returned
Oxygen OS - 2.1.1
A2003_14_151011
Sent from my C6602 using XDA Free mobile app
Click to expand...
Click to collapse
I just installed A1 CPU to verify your issue.
It shows cores 0,1,2,3,4 are used at 1344ghz for me as well.
When i check with synapse (i'm on AK kernel) it shows all cores are used.
I guess it's a limitation with A1 CPU tool. Try with other tool that supports such architecure.

I was sceptical on the same but, out of the box I remembered seeing 1777 MHz frequencies.
Thanks a lot
I shall try more tools and get back.
Though I think if you're on a different kernel and had the A1 CPU tool been correct it would be redundant, Because core allocation would be done on kernel level (in my knowledge).
Sent from my iPad using Tapatalk

I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?

jemcik said:
I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?
Click to expand...
Click to collapse
Hi Jemcik, hi Denhot!
I'm facing the same issues on my new device and it's definately not normal!
With a battery level of 19% I was not able to get the 4 A57 cores online, which results in lower system performance. Have you found a solution?
@Denhot!
Maybe we should rename the thread into: IS OPT PERFORMANCE REALLY DEPENDENT ON BATTERY STATUS AND IS IT A ROM FEATURE OR AN ISSUE!?
I think, one of the kernel devs should be able to answer this question.

ollimi1 said:
With a battery level of 19% I was not able to get the 4 A57 cores online...
Click to expand...
Click to collapse
It looks like some system configuration files with kernels activation policy have to be edited,
but I haven't found yet which files exactly.

jemcik said:
It looks like some system configuration files with kernels activation policy have to be edited,
but I haven't found yet which files exactly.
Click to expand...
Click to collapse
I've never experienced such a function!
CPU power depending on battery voltage!? 62k with full battery, 49k with 20% battery both with same CPU temps!
Hopefully not a general problem on our side with the motherboard Voltage Regulator or something.
Have you been to a kernel thread and asked this question? If not, I will ask this in AK's kernel thread. Maybe he knows more about it!

The 4 high performance cores will only be activated when needed. What app are you using to check the core usage? Every now and then you should see 2 of the high performance cores sometimes coming to life every now and then, with the other 4 power efficent cores being more busy. Use CPU-Z to check.
Due to the way Oxygen OS's stock kernel works, only 2 of the high performance cores will ever be active, alternating between the 4 cores in an attempt to keep the phone cool and not throttle as often. If you want all 4 high performance cores to be active as well as overclocking it back to its original speeds, you'll need to flash a custom kernel.

jemcik said:
I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?
Click to expand...
Click to collapse
Hi,
would like to share I don't have a similar experience, with NFS NL or Asphalt, phone was consistent with no lags even when it got unbearable to hold.
I as playing and simultaneously screen mirroring over to a TV.
Going from 65 to 25% over a long course.
I normally won't let my battery fall below 20%.
So the thing about Li-ion/pro is that as you go lower voltage decreases so to provide same power draw current increases.
Basically it would heat up faster.
That can be a reason combined with that their might be inbuilt measures to save battery like you said, nor as an engineer I would recommend you to stress your phone at those levels.
I can't explain the lag at 45%, didn't find it might try real racing 3 later to check.
Sent from my iPad using Tapatalk

trapistasajt said:
The 4 high performance cores will only be activated when needed. What app are you using to check the core usage? Every now and then you should see 2 of the high performance cores sometimes coming to life every now and then, with the other 4 power efficent cores being more busy. Use CPU-Z to check.
Due to the way Oxygen OS's stock kernel works, only 2 of the high performance cores will ever be active, alternating between the 4 cores in an attempt to keep the phone cool and not throttle as often. If you want all 4 high performance cores to be active as well as overclocking it back to its original speeds, you'll need to flash a custom kernel.
Click to expand...
Click to collapse
This is consistent with what I've noticed. The time It didn't, a simple reboot helped solve it and it hasn't occurred since.
Also these tools can't monitor the other cores, if you're rooted why not try synapse as helkat suggested
Sent from my iPad using Tapatalk

Denhot said:
This is consistent with what I've noticed. The time It didn't, a simple reboot helped solve it and it hasn't occurred since.
Also these tools can't monitor the other cores, if you're rooted why not try synapse as helkat suggested
Sent from my iPad using Tapatalk[/QUOTE
Thanks man!
I know how the S810 should work!
But I thought the performance issues have only to do with the temps. But now it seems it have also to do with the battery level.
It would be good if someone tries to reproduce the following to verify it:
1. One run Antutu benchmark with fully charged battery and room cool temps.
To be sure the conditions are the same, shut the display off for one or two minutes, than start display again, kill all recent apps and run Antutu test and note the results.
2. Than wait or do something until your battery is down to 20%, shut the display off for the same time, kill recent apps and start Antutu test run again and compare the results.
I've also tried the same after a reboot, with always the same results.
With 100% I get scores between 60 and 66k and with lower capacity (20%) I get only 48 till 50k!
I am not interested about the benchmark results, but I need to know if this only occurs on my side.
Click to expand...
Click to collapse

So, guys!
I have tested it the last few weeks and it is a fact that the performance in benchmarks is dependent by the battery level.
We have tested it with 3 devices and it is always the same.
But thank God, it seems on the devices perfomance themselves (in apps/ui) this has no effect!
But each one can replicate this behavior very easy!

ollimi1 said:
Hi Jemcik, hi Denhot!
I'm facing the same issues on my new device and it's definately not normal!
With a battery level of 19% I was not able to get the 4 A57 cores online, which results in lower system performance. Have you found a solution?
@Denhot!
Maybe we should rename the thread into: IS OPT PERFORMANCE REALLY DEPENDENT ON BATTERY STATUS AND IS IT A ROM FEATURE OR AN ISSUE!?
I think, one of the kernel devs should be able to answer this question.
Click to expand...
Click to collapse
I have the same issue! When battery level goes lower than 20%, my A57 kernels become offline. I checked this with CPU-Z and PerfMon. And this is the same on stock or custom kernel. Now I am using Boeffla kernel. The most frustrating is that my UI suffer from this. I have lot of lags in simple apps, such as calculator or some messengers.

Same issue here, there are threads in one plus forums.
I think the threashold level is at 40 % ?? They made this to keep the battery up. You can also see faster battery drop till the 40-30% mark then it is harder to kill the battery.
I am also dissapointed in this, maybe we can search the kernel sources ? Or is there a daemon app that triggers this?
I received the phone with 20%-30% battery, started an antutu knowing how powerfull 810 chip is, then boom 45k same as the previos phone i had with 801 chipset...i was like what the fxck....runing antutu again with full battery - 66k.

well i have run benchmark in back ground with few game and apps .. and checked with cpuz max that i have notice was around 50-60% cpu load still 2 off those a57 cores were off using this device for 2-3 days it always turns off 2 cores for me rest 6 is working most of the time :/ Even in battery saver mode .. i am not sure if this is a cpuz issue as i have not rooted my device yet so cant say properly ..
Also i face some freq. benchmark issue like in benchmark it scores around single core - 690 multicore - 2.6K .. and if i restarts device it scores normal - 1.1K and 4.5K .. i have no idea whats wrong with this :/

20% Battery Mark
The drop in performance at 20% Battery is standard behavior of the Rom and Stock Kernel. The Big Cluster (A57) is completly shut down to save Battery. If you dont want this you have to use a custom Kernel which is able to switch this Battery saving strategy off. Boeffla Kernel for example can do that.

Read http://www.anandtech.com/show/9828/the-oneplus-2-review/2.
They "optimized" the soc.....
No they just turned off some cores so there is no heat problem.
So I think this is my first and latest oneplus.

they've hit the mark! What the hell, i think they must be sued for false marketing. Its just like buying a car with 400 hp and those hp are only there when i'm parked or listen to music, if i'm on the highway or on the ridge the car has 100 hp...wtf :|

Killer2k8 said:
they've hit the mark! What the hell, i think they must be sued for false marketing. Its just like buying a car with 400 hp and those hp are only there when i'm parked or listen to music, if i'm on the highway or on the ridge the car has 100 hp...wtf :|
Click to expand...
Click to collapse
Calm down lol it's actually good on their part. Shutting down A57 cores on low battery is a good thing because the A53 cores use much lesser battery. If you're out on a trip and have 10% battery, with the A57 cores this will probably drain off within an hour of intermittent usage. When only the A53 cores are active, the battery life will increase greatly.
Companies design phones for average users, not just gamers. If you don't want this feature, root your phone, flash boeffla's kernel and disable the BCL Battery Driver. It's as simple as that

4 a57 cores are stopped in my oneplus 2

so i recently bought a oneplus 2 and after a few benchmark i was socked as i was getting only 2300 multicore and 700 single core in geek bench .
So i was looking for what causing it all that i have found 4 of those a57 cores are set to off by os even when battery is 80+ and temp is well . Then after a restart its all good 6 cores were working fine and had some good scores . Again after a day those 4 cores were off and same as low bench mark score .. in good battery conditions ..
What is this ? is this normal or should i just replace / refund this device . as this is unacceptable downloading asphalt 8 to check if those core starts working on load or not cause benchmarks are definitely not doing any good .
Thank you for any help !

Just change your kernel to Boeffla, it has better thermal control, thus won't disable your A57 core that early...

otonieru said:
Just change your kernel to Boeffla, it has better thermal control, thus won't disable your A57 core that early...
Click to expand...
Click to collapse
i am not sure if this is heat issue as most of the time phone stays in ideal condition when this happen and only by restart i can turn those cores on . Tried with many thing even i tried multitasking alot while those were off like 2-3 games apps even benchmarks does not turn on those cores thats y i get low benchmarks at that time . I am thinking about taking a replacement i have that option .

Post here your CPU temperatures!

I want to know what temperatures you guys are getting when not using, light use(net browsing etc.) and heavy use(heavier games). Also include your rom. Stock? Custom?
When I'm not using my phone it's usually nearly 50 degrees. In light use it's 55-62 degrees... and in heavyy use pretty much 62 degrees all the time. Thst can't be normal, right?

I think it's depend where you live. I've temperatures like 25 - 30 in light use and 35-40 in games.
Enviado do meu H60-L02 através de Tapatalk

joe bertolucci said:
I think it's depend where you live. I've temperatures like 25 - 30 in light use and 35-40 in games.
Enviado do meu H60-L02 através de Tapatalk
Click to expand...
Click to collapse
It's cold here.

T3ER said:
It's cold here.
Click to expand...
Click to collapse
Seems your phone have a problem [emoji33]
Enviado do meu H60-L02 através de Tapatalk

It also depends on the mode you are using. Smart mode enables temperature control. Normal mode adjusts these limits and slightly over clocks your CPU.Also, it modifies the interactivity of the cores, so if you are using Normal mode in daily basis give it a try.

GeorgeKatsi said:
It also depends on the mode you are using. Smart mode enables temperature control. Normal mode adjusts these limits and slightly over clocks your CPU.Also, it modifies the interactivity of the cores, so if you are using Normal mode in daily basis give it a try.
Click to expand...
Click to collapse
I have tried both modes in gaming and normal use but my phone still gets hot to the point of even having lag in web browser yesterday and when not using temperatures are only 2 degrees lower. I always make sure no app is hogging in background so thats not the problem. I even have phone manager apk disabled because i noticed slightly better battery life when it's disabled but I believe it's mode still stays on even if its disabled. Just in case I still enabled phone manager to make sure I test properly. I forgot to mention my Honor 6 is just a month old. I have been wondering if I should change in warranty to new Honor 6. It just seems to not be normal if even in daily use my phone gets hot.
And one more thing, even before rooting(which I did to try to fix this problem)my phone got as hot as now.

My Honor is getting extremely hot only during benchmark testing or gaming for far too long. So mate I believe that you definitely have to use your warranty ?

Something intresting I found when looking at cpu usage in Kernel Audiutor. The 4 1.3ghz cores are running almost all the time at full speed. Meanwhile the 4 other 1.7ghz cores are barely running while not doing much which is fine. i believe the issue might be more of Huawei's fault(or more like completely) because even with ondemand governor 1.3ghz cores seems to be even too active sometimes. I noticed slight difference with ondemand governor, about 3 degrees colder temperatures. I think I should try lollipop to see if the cpu is better managed there.

Nexus 6P only uses A53 cores?? Too low benchmarks

As above.
Daily use is very good, everything is responsive and fast.
However, benchmarks are roughly 50-70% of what they are supposed to be.
I tried to post a screenshot of CPU Spy, previously reseted timers and then ran BasemarkOS and Geekbench. (can't because less of 10 posts )
I see in CPU Spy that Max CPU state is 1555 Mhz? That's the A53 cores, right?
Is this behaviour normal?

Are you on Android N?
Please see here
http://forum.xda-developers.com/nexus-6p/help/4-cores-allways-stopped-whats-t3390543

rev_b said:
As above.
Daily use is very good, everything is responsive and fast.
However, benchmarks are roughly 50-70% of what they are supposed to be.
I tried to post a screenshot of CPU Spy, previously reseted timers and then ran BasemarkOS and Geekbench. (can't because less of 10 posts )
I see in CPU Spy that Max CPU state is 1555 Mhz? That's the A53 cores, right?
Is this behaviour normal?
Click to expand...
Click to collapse
According to the Play Store, CPU Spy hasn't been updated in 3 or 5 years. Are you using an app that supports HMP?
Sent from my Nexus 5X using Tapatalk

joemacjr said:
Are you on Android N?
Please see here
http://forum.xda-developers.com/nexus-6p/help/4-cores-allways-stopped-whats-t3390543
Click to expand...
Click to collapse
No, the device is new, it's running Android 6.0.1, no mods or custom ROM whatsoever.

SlimSnoopOS said:
According to the Play Store, CPU Spy hasn't been updated in 3 or 5 years. Are you using an app that supports HMP?
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
So what is the best app to monitor cpu activity?
And why are my benchmarks so low?

For instance, I'm only getting ~25k in 3dmark Ice Storm Unlimited, roughly the same as my previous Nexus 6.
According to Anandtech I should be getting ~36k.

rev_b said:
So what is the best app to monitor cpu activity?
And why are my benchmarks so low?
Click to expand...
Click to collapse
Kernel Adiutor is a free kernel manager. I prefer using ElementalX Kernel Manager (paid app). Both work perfectly fine on Marshmallow, support HMP, and receive frequent updates.
If the phone is hot, then benchmarks will suffer. The big cluster gets throttled and goes offline whenever the temperature reaches a certain point. If it is running cool and you see low scores then idk cuz I don't do benchmarks.
Sent from my Nexus 5X using Tapatalk

If the phone is responsive and fast as you say why do benchmarks scores matter? Benchmarks are pointless, they give you a pretty useless set of numbers that don't equate to real world usage. If your real world usage is good (as you pointed out) then you're wasting time and energy worrying about something that doesn't matter.

Heisenberg said:
If the phone is responsive and fast as you say why do benchmarks scores matter? Benchmarks are pointless, they give you a pretty useless set of numbers that don't equate to real world usage. If your real world usage is good (as you pointed out) then you're wasting time and energy worrying about something that doesn't matter.
Click to expand...
Click to collapse
I don't care about benchmarks, but they can point to a problem in your phone.
And I really would like to know how a phone sent to hardware testers consistently gets much higher benchmarks than the one I bought. Something's not right.

rev_b said:
I don't care about benchmarks, but they can point to a problem in your phone.
And I really would like to know how a phone sent to hardware testers consistently gets much higher benchmarks than the one I bought. Something's not right.
Click to expand...
Click to collapse
I've had eight of these and none of them have performed well in benchmarks. Take from that what you will but I believe it's a problem that's common to the SD810, not necessarily that you have a defective unit.

rev_b said:
As above.
Daily use is very good, everything is responsive and fast.
However, benchmarks are roughly 50-70% of what they are supposed to be.
I tried to post a screenshot of CPU Spy, previously reseted timers and then ran BasemarkOS and Geekbench. (can't because less of 10 posts )
I see in CPU Spy that Max CPU state is 1555 Mhz? That's the A53 cores, right?
Is this behaviour normal?
Click to expand...
Click to collapse
The phone is thermal throttling because the 810 Is overheating and the cores are being turned off. You can thank Qualcomm for their faulty overheating 810 design.

Batfink33 said:
The phone is thermal throttling because the 810 Is overheating and the cores are being turned off. You can thank Qualcomm for their faulty overheating 810 design.
Click to expand...
Click to collapse
That still doesn't explain why phones sent to reviewers don't throttle so much...

sam here
I barely get my Bigger Cluster working
It's offline most of the time
I don;t mind the heat unless it doesn't damage my phone as I;m always using a cover
Any way I can change the throttle limits so that it throttles less?
will the CTT mod be good?

TJ_bab said:
sam here
I barely get my Bigger Cluster working
It's offline most of the time
I don;t mind the heat unless it doesn't damage my phone as I;m always using a cover
Any way I can change the throttle limits so that it throttles less?
will the CTT mod be good?
Click to expand...
Click to collapse
Ctt mod does exactly that.

feis said:
Ctt mod does exactly that.
Click to expand...
Click to collapse
Using CTT mod but still my Bigger cluster barely turns on
and also kernel Adiutor doesn't work sometimes, whenever I try to change something CPU related, it just keeps loading and loading

A57 disabled cores on MM and N. IT isnt True!

Most people say that A57 cores are disabled on MM. But it isnt True. As you can see on screenshots, they are working. Please post screenshot from cpu-z on android N.

It's not disabled completely, they become active as needed when temp is under control for them to be active.

how is the temp and battery in N

read
pou_gh2 said:
how is the temp and battery in N
Click to expand...
Click to collapse
Very Good.

I hope so. I don't really wanna update if the A57 cores don't work.

They are not stop on Mm but Android N

It is true that the cpu changed Android N to Quad core???

They totally ruined Device by pushing such update ????

I'd rather belive it's cpu-z problem, because antutu score did not change after upgrading to 7.0.

S1gma said:
I'd rather belive it's cpu-z problem, because antutu score did not change after upgrading to 7.0.
Click to expand...
Click to collapse
Nope... It's Absolutely true.. 4 cores got disabled and working cores got underclocked to 1.5ghz

Don't belive the're underclocked. A53 cores runs at 1,5ghz as they should. We just don't have any app that can read actuall clock speed of A57 cores. But if they're disabled, I should not get any cpu usage on them. And I'm getting cpu usage on them!
What more, why we have the same benchmark scores as in Marshmallow?

Did anyone test this on lollipop? The cores themselves may not be disabled but I did notice their lack of use, no matter what game or app I use the 4 extra cores stay at 0 %.
Benchmarks such as atutu maybe specifically written to utilize all cores, but seeing their lack of use in general use is troubling.
As for the downclock the specification for this A57 is 2GHZ according to this.
http://m.gsmarena.com/sony_xperia_z3+-6878.php
And I do remember the clock speed being different in MM.
And there's also this.
https://forum.xda-developers.com/showpost.php?p=62151047&postcount=17
So some downclocking was made.
Edit.
Something worth a note, thou some people may know this already, "Stamina Mode" does seem to hae some effect on CPU usage.
After disabling "stamina mode" or setting it to start when battery is low i started to notice some usage from A57 in general use, where before it was not used at all.

I confirm on Android 7 they are disabled (last update). What the hell is this...

microlynz said:
I confirm on Android 7 they are disabled (last update). What the hell is this...
Click to expand...
Click to collapse
Care to give a prof of this claim?

foxsevent said:
Care to give a prof of this claim?
Click to expand...
Click to collapse
Look to this... Idiot phone

microlynz said:
Look to this... Idiot phone
Click to expand...
Click to collapse
I wouldn't say that's a proof, the cores may just not be in use atm, care to flash marshmallow or kittkat to test this?

foxsevent said:
I wouldn't say that's a proof, the cores may just not be in use atm, care to flash marshmallow or kittkat to test this?
Click to expand...
Click to collapse
When I flashed Android 6 MM the cores are working and the phone is very stable

microlynz said:
When I flashed Android 6 MM the cores are working and the phone is very stable
Click to expand...
Click to collapse
They are not disabled, just in an inactive state ... sleeping.

AttilaGolik said:
They are not disabled, just in an inactive state ... sleeping.
Click to expand...
Click to collapse
On Android 7 they never work. They keep on sleeping(or disabled it's the same thing)

microlynz said:
On Android 7 they never work. They keep on sleeping(or disabled it's the same thing)
Click to expand...
Click to collapse
Well to truly test you would have to flash all the way to KK, as supposedly the cores are disabled on both MM and N.
But you are correct it doesn't matter, as the A57 is down clocked to 1.56GHz to match the A53, and the A57 is in constant sleep state, may as well be disabled, even when running full HD games it does nothing, i wiuld mind this that much if it helped to keep the phone cooler but even without the A57 Z3+ is a bloody furnace, 60C degrees on a cold day, when in use just browsing the web.
Did you notice any difference when testing MM and N, lags, slowdowns etc?
How about any benchmarks? in antutu i get from 50k to 80k and i didn't notice all cores being uses when beniching, the only way i ever saw all cores in use is when using a CPU stress app.
If i had to guess i would say that the phone switches between A57 and A53 depending on what you do bu i never noticed CORES 5-7 ever being used.