Hi guys, i'm a newbie, i need the help of experts, i have a star n9589 with a MTK6589 and i'm searching for a program to undervolt my phone, in the store there are several programs to do it but seems that no one support it if not for the clock of the cpu, but other voltages are no supported, so can someone tell me if exist a program that support it? the reason is because my battery drain is excessive, pratically in standby it's draining exactly as in a phone call, and after 13 hours of standby it's over, i tried every possible way deactivating applications, wireless optimization etc,,, but no way that is a standby killer, untill i read that the only things that really affect the battery are the kernel, the voltages and the LTE, trying antutu cpu master helped me a lot saving battery optimizing the cpu clock when in standby, so i think that lowering the voltage in a reasonable way that my phone still keep it stable could solve it, someone know if there is a software that does it in MTK6589 processors? Thx all in advance!
Related
If been trying for a few weeks now various SetCPU clock speeds combined with UrukDroid but I have yet to see any sort of meaning full battery improvements, and what I mean by meaning full is 1+ hour.
Can anybody confirm that under clocking is just more of a gimmick idea then any real world use?
Servaas said:
If been trying for a few weeks now various SetCPU clock speeds combined with UrukDroid but I have yet to see any sort of meaning full battery improvements, and what I mean by meaning full is 1+ hour.
Can anybody confirm that under clocking is just more of a gimmick idea then any real world use?
Click to expand...
Click to collapse
Have to say it was the same for me, at that point i just went for full power and had it blasting at 1GHz permanently
It is more a problem of missunderstanding.
If you say you are using 1GHz, in 99% of the times this is only the maximum that will be used if demand is there.
Normally you have one of the lower speeds running most of the time ( see statistics in Info of SetCpu ).
And even if you completely run on 1.2GHz with the display on, the processor is not the one draining the batterie.
I would like to know if it is safe to change the max cpu lock from quad core to single core mode when in need of battery or even other modes? How about for daily use but still needed battery life?
BelJanss said:
I would like to know if it is safe to change the max cpu lock from quad core to single core mode when in need of battery or even other modes? How about for daily use but still needed battery life?
Click to expand...
Click to collapse
you can find more information about this in Siyah's Kernel thread.
I locked mine to 2 cores. After researching about turning off cores, it's mentioned that it's best to just leave all 4 cores on and let android manage the power. I will turn all 4 cores on later because i'm testing dual core mode for personal reference but it maybe void because i've under volted my cpu along with turning off the 2 cores. So far my battery is draining less and i'm using my phone more this morning. I don't even notice a performance drop. My phone is still smooth..but then again i do not use my phone to play games that require a lot of performance.
Thanks for your response. I'm now testing my s3 in a single core mode and battery draining is less also. For the performance I can say that it is not bad. However, what I'm afraid of it is if has bad effect on the cpu itself.
Hey guys,
I did an experiment not a long time ago. I have my old phone with 4.1.2 Android and I went on a trip for a few days. Typically my phone discharges after 12-15 hours even without using anything (old battery) with smartassv2 or just conservative mode. Before going on the trip, I've set the minimum clock to the lowest possible and set the mode to powersaving (always using the minimum). And after 3 days the battery still was at 86%.
So what's the problem with the Android OS itself? Or have I just gotten some magical experience? Why does it use such a large clock rate for the processor when it's locked and using any preference script apart from power saver?
Thanks a bunch!
First of all, battery life depends on your battery type and capacity.
Second of all, when you underclock your cpu to the minimum frequency, battery consumption will decrease a LOT but using this frequency for apps use is practically impossible.Also, display causes less battery life.
Hope i helped !
Forgot about this topic. Yes, mate, I understand that, but the minimum frequency is enough when I don't have any apps running in the background. Seems like android still has a lot of power managment programming to be done under standby.
Maybe I wasn't clear enough, but if you just use any governor (with minimal frequency set at the lowest) apart from "powersaving", it will use more power on standby, then powersaving with the minimal frequency set.
Hi Guys,
I am a noob here. I have never used a android phone before, not even a iPhone - so basically no smart phones.My first smart/android phone would be Nexus 4 which would be coming tomorrow.
I have been reading threads to understand andriod architecture and believe have understood to certain extent.
I have a question in clocking the CPUs and Voting.
As I understand, we have 3 states -Max, Min and Sleep for a single CPU core
Max - The frequency (clock speed) which CPU executes or maximum speed which CPU sends signals to its components and get the response back. This would be used when the system is on - which means when user is doing some process.. like texting, video chat, gaming (this case GPU is also involved) etc.
Min - This would be for background process when the user/phone is idle - that when screen is off (eq - gmail sync, facebook sync etc..)
Sleep - Screen off and no background process , the core will be in sleep.
And the battery level will be directly propotional to speed of CPU with respect to the volting.
Now lets say there is a single core processor in a phone which can clock upto 1.5GZ. and the stock kernel comes up with Max - 1.3GZ and MIN -0.5 GHZ.
Question is abt overclocking minimum frequency
1. why not overclock the Mn frequency to 1.3Ghz? because the backgroundprocess would be fast and phone/core will be sleeping after that,
which means process consumes more battery at that particular time but overall baterry should be efficient as there would be more sleeping time.
2. About volting, so far I have not seen min and max volting. So is there only one voltage/power drawn for max and min CPU speeds by CPU?
Please correct me if any of my statements is wrong.
Appreciate your help,
Thanks,
Franklin B.
Overclocking the minimum frequency to 1.3ghz would probably decrease your processor's life if you use your phone too much but I have been actually increasing my phone even 200mhz more than it was in stock ROMs, i've been using my device for more than 2 years and it still works perfectly. Finally, it all depends on how much your phone is good.
I also decreased the cpu min and max frequency when phone sleeps to 256 mhz which decreased a lot battery consumption.
Hope i helped !
Don't forget the THANKS button
1.you can but your battery life will be drastically reduced! There is a good amount of time after the screen is off and before the phone sleeps! So if over clock the min to 1.3Ghz, the processor will be running at 1.3Ghz till it goes to sleep! But if that's what you want you can do that!
2 . I'm not so sure about this topic either but I think the processor operates at a particular voltage and I could be wrong!
Sent from my GT-P3100 using Tapatalk 2
Thank you Guys
Franklin Bernard said:
1. why not overclock the Mn frequency to 1.3Ghz? because the backgroundprocess would be fast and phone/core will be sleeping after that,
which means process consumes more battery at that particular time but overall baterry should be efficient as there would be more sleeping time.
2. About volting, so far I have not seen min and max volting. So is there only one voltage/power drawn for max and min CPU speeds by CPU?
Click to expand...
Click to collapse
Hi, I received your PM. I agree with the guys about the heat issues, longevity, and battery life etc. The answer to your question #2 will help you better understand things.
In all kernels, there are frequency/voltage scaling tables. For every frequency step (clock speed) in the table, it corresponds to a specific voltage. It gets a bit more complicated than this of course, but that is the basic way things are setup in the kernel. The higher the frequency, the higher the voltage is required to be to keep the CPU (or GPU, bus, RAM etc.) stable at a given clock speed. The more voltage, the more current, and the more heat is generated. The longer you stay at higher clock speeds/voltages, the better the cooling system you need to have. Supply regulators are defined to feed the core and rail voltages so that the processor can live in a happy environment no matter what it is being asked to.
As far as power consumption, it's all about getting a unit of work done in a timely/efficient fashion using the least amount of power consumption. If the phone is sleeping, the word "timely" takes on a different meaning so then it is mostly concerned with power consumption and getting the background tasks completed effectively without having the phone experience the sleep of death (SOD). What you are talking about is the theory of "race to sleep" so that the work can be done quickly and the phone can go back to sleep where it uses the least amount of power (clocks actually turn off during deep sleep and cores are turned off). However, there is a happy medium to this theory and heat and battery consumption are the main enemies. Heat can also rob efficiency, more current is required when a circuit heats up. The more a phone wakes up to do syncs for email, apps, social networking, missed calls etc., that work can stack up throughout the day. The question comes down to how can the device get this work done using the least power and keep the device cool. On the N4, the lowest frequencies can use ~700-800mV per core while the highest frequencies can use ~1100mV. There is a drastic difference in the amount of heat generation between this range.
I think this should give you the general idea and maybe more that you wanted to know! Here are some links to check out if you are interested. Google and you will find many many more articles and research papers.
http://en.wikipedia.org/wiki/Voltage_and_frequency_scaling
http://atrak.usc.edu/~massoud/Talks/Pedram-dvfs-Taiwan05.pdf
Thanks a ton !!!
Hi XDA folks! Sorry if this has been posted before, I looked and can't find any information.
----
I installed CPU memory monitor on my Note 3 and closed all background applications in "active applications". I also greenify literally everything that doesn't cause a problem. However, the CPU usage on my android device, with absolutely nothing open except the CPU monitor, is about 10%.
On my PC, when idle, the CPU usage never goes above 3% (i7 @ 4.5ghz), however shouldn't my phone do the same? The most resource intensive process is cpumonitor itself - using 2% CPU. System stays about .5-3%.
My theory is that, because the phone is underclocked to a very low frequency when idle, any little task will use a bit of CPU percentage. Is my theory correct?
I also noticed a lot of RAM is used idle, but this is no problem to me. I know unused RAM is better, it is good that Android caches everything it can.
Thanks a lot