What is (in your experience) the best kernel for battery life?
I like FireIce kernel, but you have to manually underclock CPU & GPU (2.1GHz and 750 MHz) to achieve cooler temps and longer battery life.
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Yesterday I thought I would test my battery life if I left my clock speed at 806 MHz, It lasted over 24 hours with no real speed decrease... I am requesting that a developer makes a kernel that is underclocked to 806 MHz and undervolted as much as possible so we can see how much battery life we can pull out of this thing.
take intersectRavens 800mv (or 925) kernel and underclock via setcpu?
lower than 800mv won't be possible, even 800mv is too low for me, it uses more battery cause data connections is very unstable. 925 gives better battery life for me.
IR kernel supports conservative governor too.. works great for me.
yeah just use set cpu to underclock the device. all these kernels already have the lowest voltages for each cpu frequency. but once again, the lower the voltage, the lower your signal strength, and if you signal strength gets too low, your phone will boost voltage to the radio to try to increase it and it will end up using more power. this is why many prefer the 925mv kernels as opposed to the 800mv ones.
this is my understanding, please correct me if i am wrong.
nellyspageli said:
yeah just use set cpu to underclock the device. all these kernels already have the lowest voltages for each cpu frequency. but once again, the lower the voltage, the lower your signal strength, and if you signal strength gets too low, your phone will boost voltage to the radio to try to increase it and it will end up using more power. this is why many prefer the 925mv kernels as opposed to the 800mv ones.
this is my understanding, please correct me if i am wrong.
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I wasn't sure, that's why I said lowest possible. So I think I'll just do that, but from what you said I'm now wondering if we can OV the radio's voltage from the kernel to fix the 3g/speed problems...
will it work on froyo? i have CM6alpha1
link to the kernal to use and setCPU settings please (including profiles) much appreciated!
Just to let you know ahead of time, I know how to overclock & undervolt
My question:
Should I notice better battery life with 1400MHz @ 1275mV or 1200MHz @ 1275mV?
Even more basic - "With my voltages the same, but clocks higher, will I notice less battery life?"
My thoughts:
Not using more mV than a stock 1200MHz, so I shouldn't notice anymore drain
Should be finishing tasks faster - Saving Battery Life
So I shouldn't be noticing any more drain then stock, but it is faster.I do notice a difference in speed between 1200 & 1400MHz, otherwise I would just use 1200MHz @ my current stable of 1200mV.
Overclocking/Undervolting
You might want to grab SetCPU or Pimp My CPU from the market and memorize some different CPU profiles that would allow you to test and see the results of what you want to do.
can you suggest me the best and good settings for setcpu i want to extend my battery life thank you .
RP19OMG68 said:
can you suggest me the best and good settings for setcpu i want to extend my battery life thank you .
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well..... there are three factors regarding CPU which could prolong batt life..
undervolt
underclock
governor
The kernel also plays a huge role in batt consumption!
First set governor to interactiveX or smartassV2. whatever works better for you.
Set your minimum frequency to 250MHz. It actually consumes LESS batt then 130MHz or 180MHz.
You can slow the CPU down up to 650MHz and have a smooth phone. Depends on settings and optimisations...
And I wouldn't advise using any screen off profiles....
For undervolting, try system tuner on the market.
iONEx said:
well..... there are three factors regarding CPU which could prolong batt life..
undervolt
underclock
governor
The kernel also plays a huge role in batt consumption!
First set governor to interactiveX or smartassV2. whatever works better for you.
Set your minimum frequency to 250MHz. It actually consumes LESS batt then 130MHz or 180MHz.
You can slow the CPU down up to 650MHz and have a smooth phone. Depends on settings and optimisations...
And I wouldn't advise using any screen off profiles....
For undervolting, try system tuner on the market.
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Man thanks it helps a lot
First of all, I am totally new to this forum.(I mean as an registered user)
Before that I always had the thing from the forum what I needed.
Now here is my question,
If i overclock the processor speed of my android device to a higher position, isn't it gonna take more battery power than usual?
Phone model: Xperia Live With Walkman
Boot loader: unlocked
Root Access: Rooted
Kernel: Rage 3.2
ROM: Real ICS r6
overclocking is going to drain your battery obviously.
overclocking drains more battery but gives better performance,too much over clocking makes phone heat & even hardware issues
saqib nazm said:
overclocking drains more battery but gives better performance,too much over clocking makes phone heat & even hardware issues
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My phn's original capacity is 1 Ghz
How much overclocking can keep my battery level fair and also give smoother performance without causing me any hardware issue?
Btw, Thx for the ans.:good:
Saimoon said:
My phn's original capacity is 1 Ghz
How much overclocking can keep my battery level fair and also give smoother performance without causing me any hardware issue?
Btw, Thx for the ans.:good:
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Click to collapse
Power consumption = Voltage x Voltage x cpufreq x some constant for your device. If you OC (raise the cpufreq) you will have more power consumption and more heat generation because most of the power is dissipated as heat and the heat is what damages your cpu. It is probably impossible to kill your cpu in one go, because your device should shut off when it begins to over heat (this will look like a random reboot). But you will slowly degrade the over all performance of your cpu and eventually you get to a point where you see a lot of random reboots. So if you decide to OC you probably want to also undervolt as well. This is because power consumption (and heat) scale with the square of the applied voltage. One rule of thumb is that your maximum cpufreq is actually determined by the voltage. For example, my cpu is rated to be stable at 1 GHZ and 1200 mV, so when I OC and UV, I scale the cpufreq as high as I can go, as long as the voltage is not greater than 1200 mV, for me this is 1.5 GHz.
Also remember that your cpu governor will have a big effect on your power consumption and it is probably doing a good job keeping the cpu running in the low range of the cpufreq table, so you are unlikely to see big effects of OC or UV on real life battery consumption.
every chipset is different, even though the brand and model is the same. noone can guarantee you any safe value to overclock.
Thanks Giving!
Thanks Everybody for helping me out!
I am applying 1.402 GHz :laugh:
Overclocking is not the only thing you have to think of in order to improve your phone's overall performance. The most important issue for me is choosing the right kernel and applying the right governor + I/O scheduler. From my experience with Mini (i have tried ALL available kernels and most of ROMs) I can surely say that now with my phone (ICS .587, custom ROM + kernel) overclocked to 1.5 GHz battery with minimal use (20 mins calls, 40 mins WiFi per day) lasts at least 60 hours. When I bought my phone (GB, no OC, all stock) battery was struggling to stay alive for 24 hours with the same minimal use. Conclusion: first pick the right kernel and ROM, then OC.
Hello,
I requesting a overclock and undervolt kernel for our device.
With undervolt (i mean) we can decerase overheating, and incerase battery life.
With it we can undervolt and overclock, that mean with lower voltage higher cpu clock, but i mean phone is good performace, undervolt can help a lot. I triyed undervolt cpu with setCpu but there is not any option, that i mean it need undervolt kernel.. Or something else?