Hello,
I've a question regarding clockspeeds. Since yesterday i rooted my tab, as an early adaptor i experienced the lagging, heat failures etc. Since the JB update i've the feeling that the cpu doesn't run on max speed, also scaling the other cpu's is not as fast...
I downloaded several cpu monitoring apps, i found out my cpu never reaches 1.4Ghz. Max is 1,3Ghz, i don't know of thats for real or a bug in the monitoring code. But several apps have showed this, ex system tuner, also i found out that almost never the fourth cpu comes on. I'm not an excesif gamer, but for the test i played asphalt 7 and nfs shift.
Do you guys have an idea how to solve/tune? I already flashed the Vorbeth GPU OC (Thanks!:good but i wasn't able to find any more kernels or CPU mods.
To me its very very annoying that have a quad, but scaling very very conservative (I don't care about battery), i just want to ramp up and use all the cpu's hence i'm a multitasker.
Overall, i've the "feeling" that the heat issues are solved by using a very very conservative governer and not scaling max. Maybe i'm totally wrong, and i would be happy to hear that. Right now i feel kinda screwed.. by acer.
edit: Sorry for posting in general, i realize i've should post in QA
power saving level "balanced" is 1.3ghz, "High Performance" is 1.4ghz. It got introduced with an update. So your monitoring app is correct.
It could be possible to clock the A700 to 1.5ghz, but I wouldn't go higher since it's already getting hot enough on high CPU usage.
nex86 said:
power saving level "balanced" is 1.3ghz, "High Performance" is 1.4ghz. It got introduced with an update. So your monitoring app is correct.
It could be possible to clock the A700 to 1.5ghz, but I wouldn't go higher since it's already getting hot enough on high CPU usage.
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Click to collapse
Thanks, however i've always turned high performance on. I forgot to mention, but aslo during testing.
I have been using cm for about months now and encountering this problem for the past few weeks. I am not able to reduce the Minimum frequency of the processer. Even when I'm reducing it it goes back to the maximum. This is reducing my battery life. Tried a factory reset but to no avail. Please help people.
I have been able to fix quite a bit of thermal throttling experienced in multiple benchmark runs by tweaking with the thermal-engine configuration file. With just a few changes and with the copper shim mod I can now run geekbench for as many five times with almost no drop in score. After that I get no thermal throttling in single core but I have it setup to disable two cores after it hits 55C CPU temp in core 4 and 7. I use CPU Z to see actual CPU temp from the sensor readings. Even after 8 Geekbench runs the two cores are still running at full speed and the phone is registering 44C. It's warm but not hot by any means.
If anyone is interested in playing around with it just look for the file in \System\etc\thermal-engine-8994.conf
Most of it is just two adjustments. One for Max temperature at which it will throttle and the one below is the temperature at which throttling stops.
probaina said:
I have been able to fix quite a bit of thermal throttling experienced in multiple benchmark runs by tweaking with the thermal-engine configuration file. With just a few changes and with the copper shim mod I can now run geekbench for as many five times with almost no drop in score. After that I get no thermal throttling in single core but I have it setup to disable two cores after it hits 55C CPU temp in core 4 and 7. I use CPU Z to see actual CPU temp from the sensor readings. Even after 8 Geekbench runs the two cores are still running at full speed and the phone is registering 44C. It's warm but not hot by any means.
If anyone is interested in playing around with it just look for the file in \System\etc\thermal-engine-8994.conf
Most of it is just two adjustments. One for Max temperature at which it will throttle and the one below is the temperature at which throttling stops.
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Click to collapse
Without your copper shim mod have you found any better but safe values we can try?
At least no thermal throttle until 55 celsiius
It should be safe without the copper shim. The thermal pad it comes with works pretty well. It will still thermal throttle to whatever temperature you set it at so it won't cause any harm.
I've set the Big cluster to a max of 65C and a single A57 core to up to 71C and haven't had any problems yet. I used to get horrible performance with PPSSPP emulator. When running Tony Hawk Project 8 in PPSSPP after 30 seconds of gameplay It used to drop to 6fps and now it can sustain over 20fps after reaching 71C on a single A57 core. I only saw a maximum battery temperature of 40C and the device wasn't noticeably warmer than it was with the default thermal settings.
probaina said:
It should be safe without the copper shim. The thermal pad it comes with works pretty well. It will still thermal throttle to whatever temperature you set it at so it won't cause any harm.
I've set the Big cluster to a max of 65C and a single A57 core to up to 71C and haven't had any problems yet. I used to get horrible performance with PPSSPP emulator. When running Tony Hawk Project 8 in PPSSPP after 30 seconds of gameplay It used to drop to 6fps and now it can sustain over 20fps after reaching 71C on a single A57 core. I only saw a maximum battery temperature of 40C and the device wasn't noticeably warmer than it was with the default thermal settings.
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[SS-LITTLE_CLUSTER_management]
algo_type ss
sampling 10000
sensor xo_therm
device cluster0
set_point 52000
set_point_clr 42000
action_type 10000
I should change for example here set_point to 70000? This is how it works?
kutulu32 said:
[SS-LITTLE_CLUSTER_management]
algo_type ss
sampling 10000
sensor xo_therm
device cluster0
set_point 52000
set_point_clr 42000
action_type 10000
I should change for example here set_point to 70000? This is how it works?
Click to expand...
Click to collapse
Well yes. Except that's the little cluster and they don't get that hot normally. It's the big cluster that needs to be modified. I also tuned my display thermals so the screen wouldn't get so dim when the phone gets warm. Here you can look over my configuration if you want.
https://www.dropbox.com/s/1yve5d0m7uin0ga/thermal-engine-8994.conf?dl=0
probaina said:
Well yes. Except that's the little cluster and they don't get that hot normally. It's the big cluster that needs to be modified. I also tuned my display thermals so the screen wouldn't get so dim when the phone gets warm. Here you can look over my configuration if you want.
https://www.dropbox.com/s/1yve5d0m7uin0ga/thermal-engine-8994.conf?dl=0
Click to expand...
Click to collapse
Thanks i will try them!!
your settings somehow "unlocked" my phones cpu. lol in geekbench I found an increase of performance of 200 points in multicore from 4020 I had before maximum , now nearly 4300 .It is impressive. also if I run 6-7 geekbench in a row there is a decrease everytime ex 4200 4050 3900 3600..... but temperature stays 45 degree.
I will test them more later.
http://browser.primatelabs.com/user/73366
Someone try this?
Wysłane z mojego LG-H955 przy użyciu Tapatalka
Other than the two of us?
kutulu32 said:
your settings somehow "unlocked" my phones cpu. lol in geekbench I found an increase of performance of 200 points in multicore from 4020 I had before maximum , now nearly 4300 .It is impressive. also if I run 6-7 geekbench in a row there is a decrease everytime ex 4200 4050 3900 3600..... but temperature stays 45 degree.
I will test them more later.
http://browser.primatelabs.com/user/73366
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Click to collapse
Thanks for sharing your results. That's the highest multi core score I've seen on our phones. I never gotten that high of a multi core score. Glad to help. My configuration also tweaked the battery thermal settings so now you should see faster charge times as well. The default charge rates had really conservative thermal settings and the high speed charge would drop after a while but now it will 2.2 to 2.4 amp charge through the whole charge.
probaina said:
Thanks for sharing your results. That's the highest multi core score I've seen on our phones. I never gotten that high of a multi core score. Glad to help. My configuration also tweaked the battery thermal settings so now you should see faster charge times as well. The default charge rates had really conservative thermal settings and the high speed charge would drop after a while but now it will 2.2 to 2.4 amp charge through the whole charge.
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Click to collapse
Yes indeed i saw a difference in chargin thanks for your effort in the configuration. I am not very fond of benchmarks but i run some in my devices after magor changes (firmware....). This device should have been speedier because of the full hd snapdragon 810 combination. I wonder if we delete the thermal config is the device gonna be speedier? I am waiting for 5.1.1 hoping for smoother rom. Lets hope soneone unlocks the bootloader!!!! I took my precautions disabling MLT lol
probaina said:
Well yes. Except that's the little cluster and they don't get that hot normally. It's the big cluster that needs to be modified. I also tuned my display thermals so the screen wouldn't get so dim when the phone gets warm. Here you can look over my configuration if you want.
https://www.dropbox.com/s/1yve5d0m7uin0ga/thermal-engine-8994.conf?dl=0
Click to expand...
Click to collapse
My phone gets really hot with those settings
I overwrote the original one ^^ has someone made a backup and can share it with me.?
I guess it depends on what you're doing but I probably wouldn't play any 3d games with those settings. Here's a copy of the original one https://www.dropbox.com/s/yb76q6qwanb9ujr/thermal-engine-8994.conf?dl=0
smouker said:
My phone gets really hot with those settings
I overwrote the original one ^^ has someone made a backup and can share it with me.?
Click to expand...
Click to collapse
When you apply the settings you need to give time to the phone to 'absorve' them.
Run a couple of benchmarks, test a 4k video, reboot the phone 3-4 times, close it also.
I havent noticed higher tdmperature of 45 celsius.
kutulu32 said:
When you apply the settings you need to give time to the phone to 'absorve' them.
Run a couple of benchmarks, test a 4k video, reboot the phone 3-4 times, close it also.
I havent noticed higher tdmperature of 45 celsius.
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Click to collapse
I noticed that haha now its fine
kutulu32 said:
Yes indeed i saw a difference in chargin thanks for your effort in the configuration. I am not very fond of benchmarks but i run some in my devices after magor changes (firmware....). This device should have been speedier because of the full hd snapdragon 810 combination. I wonder if we delete the thermal config is the device gonna be speedier? I am waiting for 5.1.1 hoping for smoother rom. Lets hope soneone unlocks the bootloader!!!! I took my precautions disabling MLT lol
Click to expand...
Click to collapse
I'm not sure what would happen if you just deleted the file. Maybe it'll revert to some default, or perhaps it won't thermal throttle at all which would result in auto shut off when it overheats. Probably not worth risking it without a custom recovery in case it doesn't boot.
I have notice that my phone is way quicker now. It was fast before but now it's a beast when I push it hard. Also things like PPSSPP emulator was useless with the default thermal throttling now it can beat my Tegra note 7 with 4 A15 cores at 2.1ghz at it.
Was there a problem with your settings? I noticed your settings you had shared on dropbox are no longer available.
uh60james said:
Was there a problem with your settings? I noticed your settings you had shared on dropbox are no longer available.
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Click to collapse
The folder was deleted for some odd reason. I was able to restore it so the link should work now. Let me know how it works out for you.
A few questions about these settings.
-At the top where you have SS-Little_Cluster_management and SS-Big_Cluster_management is the set point the shutdown temp for the entire cluster?
-I think this one is self explanatory by the action listed but towards the middle where CPUx_MONITOR for each core is, is the threshold the temperature at which the entire phone shuts down?
-I'm not sure I am noticing the difference between SS-CPUx and CPU_HOTPLUG_MONITOR. Could you explain these?
uh60james said:
A few questions about these settings.
-At the top where you have SS-Little_Cluster_management and SS-Big_Cluster_management is the set point the shutdown temp for the entire cluster?
-I think this one is self explanatory by the action listed but towards the middle where CPUx_MONITOR for each core is, is the threshold the temperature at which the entire phone shuts down?
-I'm not sure I am noticing the difference between SS-CPUx and CPU_HOTPLUG_MONITOR. Could you explain these?
Click to expand...
Click to collapse
I don't want to assume I know everything about this. Everything I know about the thermal configuration file I learned from seeing others modify the LG G3 thermal config file. I also learned some by experimenting with my G Flex 2.
In my understanding SS-Little_Cluster_management and SS-Big_Cluster_management is the temperature at which the Cluster will thermal throttle when all cores in the cluster are being used at once. From what I've seen anything with "action_type 10000" means thermal throttle. The closest thing I can think off that works like that is how Intel I5 and I7 will limit turbo speed when more than one core is being used. Except in our case this is to prevent higher speeds when it reaches a certain temperature. So lets say your phone is running some heavy multithreaded app now it's going to follow the rules set in Cluster_management. The default Big Cluster temperature is set to start slowing things down when temperature reaches 48C and to not go back to full speed until the temperature drops down to 38C. One thing I find interesting is that at about 48C cluster temperatures was about where the Big cores would drop to a max of 1.5 ghz. So I'm just guessing that this setting may play a big part on the big cores max speed.
[CPUx_MONITOR] seems to shutdown the phone when the core reaches a certain temperature threshold of 120 C and I assume will not allow it to turn back on until it drops below 115C.
[SS-CPUx] on a big core seems to slow the specific core down when it reaches a temperature threshold of 85C and to not allow it to go to full speed until it drops below 55C. However this rule can be overwritten by [CPUx_HOTPLUG_MONITOR] which can shut down a core even if it hasn't reached it's maximum temperature threshold.
[CPUx_HOTPLUG_MONITOR] just tells the specific core to turn off once it reaches the temperature threshold specified. On the default configuration core 4 and 7 are set to turn off when their temperature goes above 50C. After that core 5 turns off at 58C and even core 6 turns off at 61C. At which point only the small cores will remain on.
I hope that helps somewhat.
Is it possible to implement gpu undervolting into a kernel for the Xperia Z5 I'm looking at you @AndroPlus XD , cpu undervolting is very much possible, it helps reduce heat and increase the lifespan of the chip, so if we can do this on the cpu why not the gpu?
For the Z5 undervolting the gpu isn't necessary.. And I dont recommend doing it either..
The reason being (from my experience and attempts at changing gpu governors and clock speeds)..
I have come across the following scenarios/issues.
1.. Changing the GPU governor from the default governor with 3CToolBox Pro to a different governor force reboots the device instantly and reverts back to default governor settings..
2. Min gpu clock speed is 180Mhz and may is 680Mhz. While playing graphically intense games the gpu barely increased in speed.. It was literally idling at 180Mhz and barely flinched up any higher. Changing the Min speed made no difference in performance.. But from what I remember device still gets hot but not hot enough to cause any concern..
If you're going to undervolt the gpu my advice would be to decrease the maximum gpu speed to like 450 or 510 because as I mentioned above, the gpu speed almost never even increases past minimum that I have noticed when monitoring.. So setting the gpu may speed down 1 or 2 levels would be better and atleast a tad safer incase of sudden voltage / overvoltage spikes..
That's just my 2 cents and friendly advice mate. But I would like to know how you go with this and would love to hear the outcome once you have gone through with the tweak. Let me know how it turns out.
Good luck bro.
Sent from my E6653
TheTecXpert said:
For the Z5 undervolting the gpu isn't necessary.. And I dont recommend doing it either..
The reason being (from my experience and attempts at changing gpu governors and clock speeds)..
I have come across the following scenarios/issues.
1.. Changing the GPU governor from the default governor with 3CToolBox Pro to a different governor force reboots the device instantly and reverts back to default governor settings..
2. Min gpu clock speed is 180Mhz and may is 680Mhz. While playing graphically intense games the gpu barely increased in speed.. It was literally idling at 180Mhz and barely flinched up any higher. Changing the Min speed made no difference in performance.. But from what I remember device still gets hot but not hot enough to cause any concern..
If you're going to undervolt the gpu my advice would be to decrease the maximum gpu speed to like 450 or 510 because as I mentioned above, the gpu speed almost never even increases past minimum that I have noticed when monitoring.. So setting the gpu may speed down 1 or 2 levels would be better and atleast a tad safer incase of sudden voltage / overvoltage spikes..
That's just my 2 cents and friendly advice mate. But I would like to know how you go with this and would love to hear the outcome once you have gone through with the tweak. Let me know how it turns out.
Good luck bro.
Sent from my E6653
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Click to collapse
1. thats because some of the options arent even gpu govenors,
2. im pretty sure xperias newer than 2014 will have something called AVS which stands for auto voltage scaling, im not sure if this is the case with z5 but im no dev so i cant confirm my self.
and the snapdragon 810 is known for a being a cpu that gets hot, i believe the z5 has a newer version with the problem somewhat fixed but that doesnt account for sonys somewhat "meh" method of cooling but atleast its way better than before.
Just leave it on default tbh. Unless you're adamant on undervolting lol
Sent from my E6653
My phone keeps randomly shutting down when CPU overheats. I was able to minimize sudden shutdowns by underclocking and undervolting the CPU. I was wondering if disabling MPDecision and thermal core control will reduce sudden shutdowns too.
Not looking for performance. Just less shutdowns. I'm ok with the phone heating up as long as it does not explode!
erryday said:
My phone keeps randomly shutting down when CPU overheats. I was able to minimize sudden shutdowns by underclocking and undervolting the CPU. I was wondering if disabling MPDecision and thermal core control will reduce sudden shutdowns too.
Not looking for performance. Just less shutdowns. I'm ok with the phone heating up as long as it does not explode!
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Click to collapse
Disable just the thermal control... Try limiting the number of cores too if you can. Install custom kernel almost all allow max core online.
Sent from my Nexus 5 using XDA-Developers mobile app
Took my phone to phone repair. turned out it was my battery heating up, not the cpu. Replaced the battery and now phone works like new. no more messing around with the kernel settings