Greetings people!
Sorry if this was already asked, but i couldnt find answer anywhere.
i ve rooted nexus 5 (stock kernel, stock rom) and installed trikster mod. I have noticed that minimum and maximum cpu frequencies are changing from time to time. Is this normal?
Thanks!
Hi,
If the min CPU freq changed by itself it could be due to MpDecision (the min CPU freq is increased for smoothness purpose when you touch the screen so when you open Trickster Mod for example for xx ms... plus the specific refresh time of the app to see the real min CPU freq), for the max CPU freq maybe due to thermal throttling at some point (the CPU freq is decreased according to the CPU temperature to avoid damages)...
What is the min CPU freq when it's changed? 1.26 Ghz?
What is the max CPU freq when it's changed? In what situations?
Prezlamen said:
Greetings people!
Sorry if this was already asked, but i couldnt find answer anywhere.
i ve rooted nexus 5 (stock kernel, stock rom) and installed trikster mod. I have noticed that minimum and maximum cpu frequencies are changing from time to time. Is this normal?
Thanks!
Click to expand...
Click to collapse
Yes.
Related
Guys, can you help me out?
Something odd has been happening on my phone. I run Matrix kernel 9.5 on Lazy Governor and everything's fine, but when i turn it to Ondemand the phone starts to reboot randomly.
Does anybody know what can it be?
Thanks!
Try running different min and Max frequencies and see if that helps.
Sent from my Nexus S using Tapatalk
have you fiddled with the voltages
I tried different min and max frequencies and I also played a little bit with voltages. What i realized is that if the voltage is too low for a particular frequency my phone reboots. Do you know how can i teste how far i can get with OC?? If i OC to 1.2GHz for instance, and my phone reboots... Can i put a higher voltage to 1.2 frequency in order to get it working?
Thanks in advance!
Try to increase the voltage as small as possible until it not reboot
But be carefull! Increased voltage can damaged your cpu.
I prefer dont do OC, this device is fast enough on default freq.
Sent from my Nexus S using XDA App
Hi,
I'm running NSCollab 1.0.50 with franco.kernel from Nov. 13 on a I9020a.
I'm playing around with undervolting the cpu and trying to find the minimum stable voltages. My procedure is to start the voltage as low as the voltage for the frequency step before it and then increase the voltage in 25mV steps until everything is stable. I am using SetCPU to adjust the voltages.
So far this has worked for every frequency step except for the 100MHz step. I can't seem to find the lowest voltage for 100MHz. For example, the 200MHz step will be unstable at 750mV but is stable at 775mV. The 100MHz step is never unstable no matter how low I set the voltage. I can even set it to 0mV (which I know is ridiculous) and it wont freeze.
Does anyone know why the phone doesn't become unstable at ridiculously low voltages for the 100MHz step? I see that the slider to adjust voltages in SetCPU only goes down to 600mV but I can manually type in lower voltage values. Is there some kind of hard-set voltage minimum for the cpu that even SetCPU can't bypass when setting the voltage? Is the phone violating the laws of physics?
Thanks in advance
What's your min frequency in setcpu?
Oh yeah, I should have posted that.
100MHz min
1000MHz max
lazy scaling
i heard that ...
force phone running in low mV MAY damage the CPU and other parts of it and destablize it...
=================================
i have seen some applications that would ignore your input value when it is not logical ...
for example like NS tools , one of them , i don't remember which exactly , perhaps it's live OC, for live OC, if you set value lower then 100 , it would automatically set back to 100 ... i think this may be same as your min frequency case...
nathanson666 said:
Hi,
I'm running NSCollab 1.0.50 with franco.kernel from Nov. 13 on a I9020a.
I'm playing around with undervolting the cpu and trying to find the minimum stable voltages. My procedure is to start the voltage as low as the voltage for the frequency step before it and then increase the voltage in 25mV steps until everything is stable. I am using SetCPU to adjust the voltages.
So far this has worked for every frequency step except for the 100MHz step. I can't seem to find the lowest voltage for 100MHz. For example, the 200MHz step will be unstable at 750mV but is stable at 775mV. The 100MHz step is never unstable no matter how low I set the voltage. I can even set it to 0mV (which I know is ridiculous) and it wont freeze.
Does anyone know why the phone doesn't become unstable at ridiculously low voltages for the 100MHz step? I see that the slider to adjust voltages in SetCPU only goes down to 600mV but I can manually type in lower voltage values. Is there some kind of hard-set voltage minimum for the cpu that even SetCPU can't bypass when setting the voltage? Is the phone violating the laws of physics?
Thanks in advance
Click to expand...
Click to collapse
The method you are using is wrong. I did the same thing a few days ago, and changing the values like that won't work.
What I found out is that to easily find stable values, in SetCPU put your max as 200MHz and your min at 100MHz. Use ondemand. Keep 200MHz at stock volts and 100MHz try an undervolt.
Apply everything then slide the minimum frequency slider around a bit. I guarantee you 600mv will freeze. Do the same for each value, if testing 200MHz, use 400MHz as your max and 200MHz as your min, stock volts for 400MHz. Slide the minimum frequency left and right.
Sounds weird, but it works. Do this until you find a voltage for each frequency. Then put your frequency max and frequency min at the same value (IE 200MHz) and launch a game or a demanding app and play for a lil while, even if performance suck. Hope it doesn't freeze on you, but if it does, bump the voltage a bit.
If you want good starting values, here's the values I have found that work for me and are 100% stable. No force close over the last few days since I started using those:
100MHz 875mv (75mv under stock)
200MHz 875mv (75mv under stock)
400MHz 900mv (150mv under stock)
800MHz 1125mv (75mv under stock)
1000MHz 1225mv (25mv under stock)
I'm pretty new to Android. I got my N5 2 months ago and rooted it as soon as I took it out of the box to get rid of the navigation bar. Didnt install any ROM or kernal.
What I did today was try to overclock it. I wanted to test the performance upgrade with Geekbench 3.
I got 2500. Tried to overclock with this app called: No-frills CPU control. And suddenly I get no higher than 2000...... Tried everything. I'm stuck at a multi core score of 2000 in geekbench while it should be 2500>.
WTF DO I DO? My device is noticeably slower, it's like a GS4 D: I'd rather not install any kernals/Roms
I set the minimum CPU frequency to 300Mhz and max to 2.266Ghz
Hi,
Thermal throttling..., overclocking produces more heat than the stock CPU freq so more thermal throttling. To prevent any damage, the CPU freq decreases according to the CPU temperature...
Let cool down your phone.
Hammer_Of_The_Gods said:
Hi,
Thermal throttling..., overclocking produces more heat than the stock CPU freq so more thermal throttling. To prevent any damage, the CPU freq decreases according to the CPU temperature...
Let cool down your phone.
Click to expand...
Click to collapse
Sure, I'll turn it off for a while.
Just to make sure: the standard CPU frequencies are 300Mhz MIN and 2.266Ghz MAX, right?
Fandrold said:
Sure, I'll turn it off for a while.
Just to make sure: the standard CPU frequencies are 300Mhz MIN and 2.266Ghz MAX, right?
Click to expand...
Click to collapse
Yes, that's right 300 Mhz-2,26 Ghz.
Not necessary to turn your phone OFF , when it boots it's a process that causes "heat" at the beginning then you will need to let it cool down again. EDIT: oups, you mean the thermal throttling OFF maybe?
Don't touch it for a while, airplane mode can help. If you are in a "hot" country/weather, air cooling, fridge...
We speak about this here: http://forum.xda-developers.com/goo...5-user-benchmark-thread-added-t2506965/page42.
Hammer_Of_The_Gods said:
Hi,
Thermal throttling..., overclocking produces more heat than the stock CPU freq so more thermal throttling. To prevent any damage, the CPU freq decreases according to the CPU temperature...
Let cool down your phone.
Click to expand...
Click to collapse
I've let it cool down and I got my old performance back . Never knew the solution would be so simple. Thanks.
I am having trouble regarding these: undervolt
maximum cpu frequency
maximum gpu frequency
cpu thermal throttling
So i downloaded kernel :Sultan-kernel-Pure-v1.7.0-Pyramid-Aroma.zip
6.5MB, which I think is the latest one. But i am not familiar with those because it is my frist time to flash my own rom and kernel. I've done everything right but can you help me set up the kernel? which is best? because there are numbers in it and i dont know what to choose. Also what is best setting for saving battery life? overclock, underclock, undervolt, cpu freq, gpu freq, thermal throttling., what are those
I also apologize for posting like 3 threads for this because im a newbie. I hope you consider. HELP me please.
etonsotoya said:
I am having trouble regarding these: undervolt
maximum cpu frequency
maximum gpu frequency
cpu thermal throttling
So i downloaded kernel :Sultan-kernel-Pure-v1.7.0-Pyramid-Aroma.zip
6.5MB, which I think is the latest one. But i am not familiar with those because it is my frist time to flash my own rom and kernel. I've done everything right but can you help me set up the kernel? which is best? because there are numbers in it and i dont know what to choose. Also what is best setting for saving battery life? overclock, underclock, undervolt, cpu freq, gpu freq, thermal throttling., what are those
I also apologize for posting like 3 threads for this because im a newbie. I hope you consider. HELP me please.
Click to expand...
Click to collapse
for good battery life put these settings:
cpu freq: whatever freq you want but maximum at 1.5ghz
gpu freq:266mhz
undervolt:whatever value you want but maximum -50mv
rzr86 said:
for good battery life put these settings:
cpu freq: whatever freq you want but maximum at 1.5ghz
gpu freq:266mhz
undervolt:whatever value you want but maximum -50mv
Click to expand...
Click to collapse
Tnx. I did what you said. Hopefully it'll help with battery life.
Hello, i come here to ask if any kernel can allow customs frequency, I want to change a CPU frequency by a values and do same with the voltage (like a computers), because I want to do bench with a higher frequency than 3014MHz
Thanks
Even if a kernel allowed that high overclock. It'd overheat and cut the frequencies down giving you a worse bench reading than stock
Sent from my Nexus 5 using Tapatalk