Database Develop

Did you overclock or underclock your N7?

I'm curious about the percentage of people overclocking or underclocking their Nexus 7.

34% / 18%. there.

I underclocked mine down to 1.1Ghz, see no lag or performance hit but the back of the tablet feel much cooler during use and noticed a longer battery life. I don't play 3D game nor do I care about benchmarking so running 4 cores at 1.1Ghz is plenty powerful.

Installed a 1.6ghz kernel, I didn't see too much improvement in text render times when zooming on Chrome, so I reverted to stock as that's the only thing I was hoping for a boost in.

I overclocked to 1.6ghz with GPU at 484mhz. It's underclocked when the screen is off though, to save battery in standby.

Jdbye said:
I overclocked to 1.6ghz with GPU at 484mhz. It's underclocked when the screen is off though, to save battery in standby.
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Click to collapse
When your screen is off your cores should actually be I'm deep sleep.
---------- Post added at 02:08 PM ---------- Previous post was at 01:59 PM ----------
Jdbye said:
I overclocked to 1.6ghz with GPU at 484mhz. It's underclocked when the screen is off though, to save battery in standby.
Click to expand...
Click to collapse
When your screen is off your cores should actually be I'm deep sleep.

sometimes i overclock to 2ghz, sometimes i underclock to 1.1ghz. it depends on the situatuon, there isnt a black or white answer, its all shades of gray. you probably wont be using one cpu speed either(unless youre unrooted). use the cpu speed that best fits the situation. if you need the device to last a long day on a single charge, then underclock. if battery juice isnt an issue, and you want the most from your device to play with, then overclock. with as easy as it is to change your cpu speed on the fly, there shouldnt only be one answer to the question.
---------- Post added at 05:15 PM ---------- Previous post was at 05:10 PM ----------
Jdbye said:
I overclocked to 1.6ghz with GPU at 484mhz. It's underclocked when the screen is off though, to save battery in standby.
Click to expand...
Click to collapse
guitarofozz said:
When your screen is off your cores should actually be I'm deep sleep.
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Click to collapse
no matter how underclocked your device is, if its doesnt deep sleep with the screen off then youre losing battery. if it doesnt deep sleep then your device has issues. oh, and you cant underclock deep sleep.

simms22 said:
no matter how underclocked your device is, if its doesnt deep sleep with the screen off then youre losing battery. if it doesnt deep sleep then your device has issues. oh, and you cant underclock deep sleep.
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If you have music playing with screen off it won't deep sleep underclocking then with screen off would help.
Sent from my Nexus 7 using Tapatalk 2

Yes I have overclocked, but I don't keep it at 1.7 ghz for the sake of my battery. I spend 6 hours in classes sometimes and I need to make sure it lasts.

gbroon said:
If you have music playing with screen off it won't deep sleep underclocking then with screen off would help.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
truth.
but he said to save battery in standby.

Which CPU binning do I have (3 different values?)

Hey there, from what I read there are 3 methods for finding out your CPU binning. I did them and each one gives me different results. Which one is the correct one?
cat /proc/cpu/msm_acpu_pvs - result "8"
/sys/module/clock_krait_8974/parameters table_name - result "qcom,speed2-pvs13-bin-v1"
/sys/module/clock_krait_8974/parameters pvs_config_ver - result "3"
From what I testes -50mV is possible but crashes with battery below 15% and in AnTuTu stability test. -25mV works stable.
Thanks

The top one is your PVS.

rootSU said:
The top one is your PVS.
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Thanks so I am with PVS 8 which is nothing to be sad about I believe.
Too bad that -25mV is all that works

why would you be sad about your phones binning? all it does is tell you which voltage table it yses, absolutely nothing else. mines a bin 5, and im very happy with my device.

simms22 said:
why would you be sad about your phones binning? all it does is tell you which voltage table it yses, absolutely nothing else. mines a bin 5, and im very happy with my device.
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I thought higher binning means more undervolting?

zakazak said:
I thought higher binning means more undervolting?
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its the whole undervolting to save battery? your undervolting doesnt save enough battery for you to see a difference. i dont undervolt at all, and overvolt my top frequency for better performance. and i see 5.5-7 hours sot daily.
---------- Post added at 02:42 PM ---------- Previous post was at 02:40 PM ----------
simms22 said:
its the whole undervolting to save battery? your undervolting doesnt save enough battery for you to see a difference. i dont undervolt at all, and overvolt my top frequency for better performance. and i see 5.5-7 hours sot daily.
Click to expand...
Click to collapse
generally, the higher pvs your device is, the lower voltage it uses by default. how much each device can undervolt will only be up to your device. each device it will differ, doesnt matter what your binning is.

simms22 said:
its the whole undervolting to save battery? your undervolting doesnt save enough battery for you to see a difference. i dont undervolt at all, and overvolt my top frequency for better performance. and i see 5.5-7 hours sot daily.
---------- Post added at 02:42 PM ---------- Previous post was at 02:40 PM ----------
generally, the higher pvs your device is, the lower voltage it uses by default. how much each device can undervolt will only be up to your device. each device it will differ, doesnt matter what your binning is.
Click to expand...
Click to collapse
Alright, thanks for that... well I will still go with -25mV as it is stable and might atleast make a littttttle difference.. and since we can, why not do it ?

[Q] Undervolting help

Hey I'm new to this undervolting thing. I believe I just undervolted by -25 globally using kernel auditor but my mV numbers in the boxes don't match the ones in this video(https://www.youtube.com/watch?v=T8THaPMp2ao). For example my bottom box 1040mV but the video's is 1010mV. Can someone please tell me what I did wrong and how to fix it?

Not everyone's voltages are necessarily the same.

danarama said:
Not everyone's voltages are necessarily the same.
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is there anyway to tell how much you've undervolted by?

Raymondlikesroot said:
is there anyway to tell how much you've undervolted by?
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Click to collapse
If the app doesnt tell you, Wipe data on the app and reboot. Stock voltages are applied every reboot, until the app applies custom.

find out what you devices bin number is, then youll know what voltage chart your device should use.

simms22 said:
find out what you devices bin number is, then youll know what voltage chart your device should use.
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Click to collapse
Do all custom kernels pay attention to the bin for voltages?

danarama said:
Do all custom kernels pay attention to the bin for voltages?
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Click to collapse
Hey I've been experimenting on my kernel mostly based off another youtube video and i've been getting systemui closes after I reboot. I know it is either lmt launcher or kernel auditor that has been causing it. Do you think kernel auditor is the culprit?
it has something to do with lmt . I figured it out.

danarama said:
Do all custom kernels pay attention to the bin for voltages?
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Click to collapse
as far as i know, yes.

Undervolting isn't going to do much of anything for long term battery life. CPU's are very minimal battery users for most day-to-day operations, so your actual battery life gains are going to be minimal, <5%, if you notice anything at all.

imnuts said:
Undervolting isn't going to do much of anything for long term battery life. CPU's are very minimal battery users for most day-to-day operations, so your actual battery life gains are going to be minimal, <5%, if you notice anything at all.
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Click to collapse
I'd say even less than 5%, more along the lines of less than 1%. but its decent for lowering temps slightly as well. me, I dont undervolt at all, yet see from 5.5-6.5 hours screen on.

simms22 said:
I'd say even less than 5%, more along the lines of less than 1%. but its decent for lowering temps slightly as well. me, I dont undervolt at all, yet see from 5.5-6.5 hours screen on.
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Click to collapse
Because you sir, are a wizard.

Good workaround (Kernel/Firmware) against overheating?

Hello guys I got some huge problems here.
I recently switched from my Z2 to the Z3+ and actually like the phone but the overheating is insane and especially kills Pokemon Go through CPU throttling, which runs smoothly on my old Z2 .
So far I am on 253, cleaned it up and tried a self modified and the zach beta9 Kernel and and runs quite bad on both. Is heating a lesser issue of 224? I actually do not want to reflash the whole system to 224 just to find out it doesn't get better.
Also is there a way to undervolt/underclock? I can change settings in Kernel Aduitor but I have the feeling the phone doesn't really care.
Help much appreciated - thanks!

Try Zach beta 8 kernel. Limit max cpu frequency by kernel auditor.
Still it's only your Goodluck if your device cools down. It's a bitter truth about this model.

waseemakhtar said:
Try Zach beta 8 kernel. Limit max cpu frequency by kernel auditor.
Still it's only your Goodluck if your device cools down. It's a bitter truth about this model.
Click to expand...
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Do you have a clue whether 224 or 256 make a difference?
I will try beta8 and report back.

Delvius said:
Do you have a clue whether 224 or 256 make a difference?
I will try beta8 and report back.
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Click to collapse
no there was no thermal improvements between these builds, dont flash your system back
but do underclock and tell us the results!
Im also affected by your exact problem

Try this kernel, seems promising. I haven't tried it since it doesnt have twrp.
http://forum.xda-developers.com/xpe...m5z-kernel-t3421630/post67813517#post67813517
Edit: Today I have flashed 256, haven't found any improvement. As per my experience 256 haven't brought any noticable change.

**** posted twice and dont know how to delete

Thank you for the replies!
Tested zach beta8, didn't help. Now I am testing http://forum.xda-developers.com/xperia-z4/orig-development/kernel-om5z-kernel-t3421630/ as suggested and if that doesn't help much also with http://forum.xda-developers.com/xperia-z4/general/kill-overheating-flash-zip-t3421782.
And Stamina Mode helps at least a bit.

Statusreport: It always runs bad. But best at the moment with root patched Stock Kernel (253) and that underclocking zip. Although I think that underclocking doesn't really help at all.

Delvius said:
Statusreport: It always runs bad. But best at the moment with root patched Stock Kernel (253) and that underclocking zip. Although I think that underclocking doesn't really help at all.
Click to expand...
Click to collapse
What are your temps? When does it start to throttle? Done any thermal-conf configuration to allow more heat?
---------- Post added at 21:03 ---------- Previous post was at 20:58 ----------
I know that @Trilliard has a very good and stable cpu governor where he has disabled two of the little and two of the big cores, this helps a lot if you underclock the remaining 4
Here are his files:
http://forum.xda-developers.com/xperia-z4/general/dont-custom-kernels-want-to-avoid-idle-t3409647
UPDATE: Added my edited files used to apply CPU tweaks (cores down clocked to 0.9 and 1.2ghz, two core disabled, tweaked cpu governor, power and others mods) and these files located in etc folder. Replace them and set correct permissions then reboot.
Click to expand...
Click to collapse

bjowol said:
What are your temps? When does it start to throttle? Done any thermal-conf configuration to allow more heat?
---------- Post added at 21:03 ---------- Previous post was at 20:58 ----------
I know that @Trilliard has a very good and stable cpu governor where he has disabled two of the little and two of the big cores, this helps a lot if you underclock the remaining 4
Here are his files:
http://forum.xda-developers.com/xperia-z4/general/dont-custom-kernels-want-to-avoid-idle-t3409647
Click to expand...
Click to collapse
Actually I didn't know about this combination - I will try it thanks!
Do you know about a thermal-conf? Actually never tried one. The phone gets hot indeed but I still think there might be some space before it actually melts.

Delvius said:
Actually I didn't know about this combination - I will try it thanks!
Do you know about a thermal-conf? Actually never tried one. The phone gets hot indeed but I still think there might be some space before it actually melts.
Click to expand...
Click to collapse
Thats what i thought as well i have my own here, its based on another persos post, but i dont remember where...
Anyways, his camera mod worked, but cpu throttle was not tampered with, and it caused a very unbalanced throttling... Ok yay i can use the camera linger and fluently, but when i exit the camera app, i cant use the phone couse its runnig at 348 mhz...
So i i did some modifications to it cpu never get under 840 for little cores, so your phones menues end web browsing are always safe from performance drops.
I made it to be able to play Pokemon go, and achieved a lot better resault than without any changes.. still prefer playing on my shield tablet, but if i dont have it around when theres a lot od pokestops nearby, then this will work for me.
While playing Pokemon go it does not go over 80 degrees, but using snapshat it can get to 85, so dont use snap for to long
Let me know if it worked for you!

bjowol said:
Thats what i thought as well i have my own here, its based on another persos post, but i dont remember where...
Anyways, his camera mod worked, but cpu throttle was not tampered with, and it caused a very unbalanced throttling... Ok yay i can use the camera linger and fluently, but when i exit the camera app, i cant use the phone couse its runnig at 348 mhz...
So i i did some modifications to it cpu never get under 840 for little cores, so your phones menues end web browsing are always safe from performance drops.
I made it to be able to play Pokemon go, and achieved a lot better resault than without any changes.. still prefer playing on my shield tablet, but if i dont have it around when theres a lot od pokestops nearby, then this will work for me.
While playing Pokemon go it does not go over 80 degrees, but using snapshat it can get to 85, so dont use snap for to long
Let me know if it worked for you!
Click to expand...
Click to collapse
Oh nice! Thank you a lot! I will totally try it out directly when PTC comes back alive. X)
What kernel and governors do you use?

Delvius said:
Oh nice! Thank you a lot! I will totally try it out directly when PTC comes back alive. X)
What kernel and governors do you use?
Click to expand...
Click to collapse
Im using stock kernel, may switch to another soon. Im using stock bcause of batterylife and idle power consumption
Im using the governor and cpu modifications in this post ; http://forum.xda-developers.com/xperia-z4/general/dont-custom-kernels-want-to-avoid-idle-t3409647

Hmm. Still runs ****ty.
Can anyone give me a short guide how to edit thermal and governors?
According to my observations the phone gets hot and then cold. I think the throttle is more aggressive and needed and I want to make it less aggressive.

Update:
I made my own modifications to the thermal engine. It is pretty bad for battery I guess but I had a very good expierence playing Pokemon Go with it today. Yes the phone gets hot. Like it doesn't drop below 70°C while playing and regulary hits 80°C but it works good. No dark screen, no 0 CPUs downclocking. So far it's fine for me, maybe I get squeeze even more out of it.

Delvius said:
Update:
I made my own modifications to the thermal engine. It is pretty bad for battery I guess but I had a very good expierence playing Pokemon Go with it today. Yes the phone gets hot. Like it doesn't drop below 70°C while playing and regulary hits 80°C but it works good. No dark screen, no 0 CPUs downclocking. So far it's fine for me, maybe I get squeeze even more out of it.
Click to expand...
Click to collapse
Done any other modifications to your file for a while? Or is it working good for you now? What's your SoT?

bjowol said:
Done any other modifications to your file for a while? Or is it working good for you now? What's your SoT?
Click to expand...
Click to collapse
Still working good for me. Not sure if I can really squeeze out more and as long as it works at the moment I do not have a good motivation to try anything else.
No idea about SoT. Always running around with a powerbank. Probably bad, it is not designed for good battery life.

Delvius said:
Still working good for me. Not sure if I can really squeeze out more and as long as it works at the moment I do not have a good motivation to try anything else.
No idea about SoT. Always running around with a powerbank. Probably bad, it is not designed for good battery life.
Click to expand...
Click to collapse
Allright thanks i might try your conf if i cant get mine to work like I want

avoiding thermal throttling?

When i play games like moderncombat5 i have 60fps but after a while the frames drop in some scenes where it didnt 3-5 minutes ago. When i check the cpu/gpu i can see that it throttles and causes these framedrops. But the phone doesnt get hot. Since it isnt possible to mess with thermal values at the moment. I wonder if there are some optimal cpu/gpu clocks where it will not throttle and performance will stay the same all time regardless of how much you stress the cpu/gpu. Because i'd rather have a underclocked cpu gpu than having thermal throttling while stressing the phone. On oneplus3 i didnt have this much thermal throttling playing mc5. I also feel the thermal throttling throttles way to early.
And yes i tried almost all kernels/roms out there it was a better experience on the op3
Thanks!

All CPUs have slight variations, some may be slightly more efficient than others of the same model. To get the best performance, you're going to have to underclock and test on your own phone bit by bit.

Anova's Origin said:
All CPUs have slight variations, some may be slightly more efficient than others of the same model. To get the best performance, you're going to have to underclock and test on your own phone bit by bit.
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I know i have pvs lvl 1 across the board thats why i wonder why i didnt have this issue on the oneplus3

nadejo said:
I know i have pvs lvl 1 across the board thats why i wonder why i didnt have this issue on the oneplus3
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What file did you open up to view that i looked a few months ago in the typical spots but found nothing.

954wrecker said:
What file did you open up to view that i looked a few months ago in the typical spots but found nothing.
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Click to collapse
I dont remember. But it was hard to find. Anyways i found out that the cpu allways throttles down to little 1209 mhz and big 1440 mhz. When gpu is running on max clock. Will make further investigations now to find perfect cpu & gpu freq.

It seems regardless of what cpu profile / governor you use and regardless if the phone is charging or not. The cpu will allways throttle down to 1209 little and 1440 big. And the gpu also throttles but i can't monitor the exact values currently. This throttling even happens when gpu is running on min freq. And even when you set big or little cluster to min freq.
Im pretty sure the thermal throttling of the oneplus3 is broken. Because:
Thermal throttling should be decided by many factors. (General soc heat generated by gpu/cpu/and ram) also the system should be aware by the values and should handle it intelligently.)
It seems there is only one heatsensor used to throttle all at once and the throttling stops at 1209mhz little and 1440mhz big. If the temperature still rises the phone simply doesnt give a f*** why i think there isnt even a point of using this stock throttling method. And no its not accurate. And no its not usefull because, it throttles regardless what heat the phone has. Because it doesnt react to soc heat. It reacts to one of the components and throttles everything. Why it can't check the other temparatures aswell and throttle other components diffrently if even needed at all.
Issue: lets say little or big cluster is overheating because the cpu load is very high on it. (And no you wont see this throttling by simply running perf gov. It needs load/ working tasks on it, means you gotta play some heavy 3d games)
The thermal throttling just brakes down both clusters including the gpu. Was the big cluster or the gpu running cool? The thermal throttling doesn't give a f***. Could the loads/tasks been shared with or pushed to the big cluster. Thermal values dont care. Could some rly simple sort of hotplug turn the overhating little cluster off to let the big cluster do the rest before it rather throttles everything on the f... phone . -nope - Its annoying. Rly just try it out yourself. I really hope to see some improvements by oneplus. And no the phone is not bad at all. It's just some things are not optimized yet. Like touch latency which is worse than on galaxy s3 but i don't mind it just giving you an example so you can imagine how bad the thermal throttling must be.
Allways remember setting the cpu clock values so low that they dont throttle anymore doesnt mean gpu will throttle less often. All compenents will throttle without comparing other compents clock rate and heat.
My question: is the thermal throttling decided by the soc itself or are there different thermal throttling values on each phone brand using sd821?
And is it possible to port these values from lets say pixel phone?

I'm on cm13 and its kernel default is a bit lower than stock. I had the screen on full brightness and was charging the battery so temps above 100°. I played dead trigger 2 on highest settings on a level with lots of special effects and weapons with lots of splatter. Got throttled when the temp hit 103° everytime. I was running performance on cpu and gpu and i tested it without charging and still get throttled.

954wrecker said:
I'm on cm13 and its kernel default is a bit lower than stock. I had the screen on full brightness and was charging the battery so temps above 100°. I played dead trigger 2 on highest settings on a level with lots of special effects and weapons with lots of splatter. Got throttled when the temp hit 103° everytime. I was running performance on cpu and gpu and i tested it without charging and still get throttled.
Click to expand...
Click to collapse
Im using laos 14.1 with latest ex kernel.
As is said thermal values are broken. Its not right to throttle down to same speed if charger is plugged as battery heat is higher and soc heat should be higher too. So i think it also throttles unnecesserily low without the charger being plugged.

Did any one find a solution to fix this?

Up up up
years of tired because of this ****ting throttling issue

Well do this at your own risk, go to system/vendor/bin and cut the file named "thermal-engine" to other directories in your sd card. This will completely disable thermal throttling. Perfect for gaming.?

Up up!!! This issues persists to me.. i even put my oneplus 3t in front of 8" fan for every gaming. Is there anyway to maintain the cpu frequency at higher rate during thermal throttling? I don't want to totally disable the thermal throttling... Seems unsafe... Enlighten me if you would

I think its time for gamer's to switch to a gaming oriented phone to avoid this thermal throttling and im looking forward to buy Black Shark which is Xiaomi backed gaming phone with custom rom (not miui) something different and that too is gaming focused hopefully it will be available globally soon ! :fingers-crossed:

J's said:
Up up!!! This issues persists to me.. i even put my oneplus 3t in front of 8" fan for every gaming. Is there anyway to maintain the cpu frequency at higher rate during thermal throttling? I don't want to totally disable the thermal throttling... Seems unsafe... Enlighten me if you would
Click to expand...
Click to collapse
There is no risk if you disable thermal throttling, the CPU will shut itself down if its temperature reaches 100°C

przemcio510 said:
There is no risk if you disable thermal throttling, the CPU will shut itself down if its temperature reaches 100°C
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If i tilt my phone to the left for gaming, i will be burning my left thumb then.... even around cpu temp of 55.... My OnePlus 3T is gold in colour.. will it be better for heat dissipation if i change to midnight black?

LN2 + Copper pot. Should help.

J's said:
If i tilt my phone to the left for gaming, i will be burning my left thumb then.... even around cpu temp of 55.... My OnePlus 3T is gold in colour.. will it be better for heat dissipation if i change to midnight black?
Click to expand...
Click to collapse
No, the color will have no impact, but it will be even worse when exposed to sun

przemcio510 said:
No, the color will have no impact, but it will be even worse when exposed to sun
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Click to collapse
Thank you... Because the country i living is hot and humid throughout the year so i have to be extra careful ..

Any solution?

blaze95rs said:
Any solution?
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There's nothing you can do about the throtting, OP3T throttles @60°C tbh in just 10 mins of game play it starts throtting
You have 2 options here
1. Either disable thermal engine as suggested by someone above ( it basically boils your device forget about gaming, temps touchs to 98°C if msm thermal is disabled and around 60 to 75°c it msm thermal is enabled it's seriously hot to touch and high chances of damaging internals
2. Underclock the big cluster to 1209MHz or 1286MHz I tested both, while gaming (2 hrs of pubg @ medium settings) temp's are around 53 to 55°c and never reached 60°c no throtting ( but you know what, games still lag or you will get low fps due to lack of power Lol I'm sorry that's true there nothing you can do about it try playing games in air conditioned room or just buy gaming Phone like Razer they have good heat dissipation, you should not forget the fact that our device is 2 years old. Tbh on a 2 year old phones even optimized games too use lot of processing power which lead more heat. More heat = throttle