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I was wondering what the best kernel to use if I was looking for better batter life
Sent from my ADR6400L
Adrenaline's 4.4.2 by FAR I am getting better battery life and performance than I ever have
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I will have to try that one from Adrenaline. In the meantime I have been using lean kernel lame version 0.5. Have not tried the 1.0 version yet, the .92 version gave me shorter battery life and lower performance with a quadrant score to back it up. I work in the middle of no-where, going from stock rooted to rooted with liquid and lean kernel 0.5 I went from 5 hrs battery life to 18 hrs.
Another check next to Adrynalyn's 4.4.2
Sent from my BAMF'd T-Bolt
I personally use Imoseyon's v1.11 Battery savery kernel with the Smartass governor. I don't really need the phone to be overclocked so running it at stock speeds is good enough for me. I can easily last for a day without charge with a decent amount of usage. Wifi @ home, 4g @ work.
dotson817 said:
Adrenaline's 4.4.2 by FAR I am getting better battery life and performance than I ever have
Sent from my Thundaaabolt using XDA Premium App
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You got a +1 from me! I am using the same kernel, and battery life so far is phenomenal! The radio upgrade may also help with the battery, but it is too soon to tell if it had any effect. Anyone try running that kernel on smartass?
with adrynalyne's 4.4.2 kernel do you guys use Setcpu with it and if so can you explain your settings? thanx
Mako84 said:
with adrynalyne's 4.4.2 kernel do you guys use Setcpu with it and if so can you explain your settings? thanx
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Max speed 1036, on demand governor, no extra rules set up. Great battery life.
Can you guys tell a difference in battery if you don't use SetCPU?
I too am running Adrynalyn's 4.4.2. My battery life is much improved.
To follow up on my earlier post I went from leankernel v0.5 to v1.11 normal. Impressed so far battery life is on par with what I experienced on 0.5. Quadrant scores are slightly higher, real life response feels identical.
[Kernel] leanKernel: minimal kernel, 1.41Ghz (and 1.92Ghz)
**Edit
Left out specifics I run with SetCPU (interactiveX) governor 1408 max - 245 min. on Liquid rom v1.0
I am running Cognition 4.4.8, which will not allow OC/UC. I actually just want to UC. What recommendation would you have for a kernel compatible with Cognition 4.4.8 for Captivate that would allow me to UC?
Don't you mean oc/uv? I don't think you know what you are talking about.
Yeah its UV (undervolt). Find any kernel that allows it and is working with your ROM. Maybe ask in that thread as others could be using a custom kernel for that exact reason.
Sent from my SGH-I897 using XDA Premium App
UC is a real term, maybe he meant he wants to limit his clock speed to 800mhz. What's that called if not UC?
Although undervolting and underclocking to save battery is a waste of time. The cpu doesn't use that much battery in the first place, the screen and the modem use the most power, you want the charge to last switch to the lowest brighteness and 2g, that will give way more battery than uc/uv will.
studacris said:
UC is a real term, maybe he meant he wants to limit his clock speed to 800mhz. What's that called if not UC?
Although undervolting and underclocking to save battery is a waste of time. The cpu doesn't use that much battery in the first place, the screen and the modem use the most power, you want the charge to last switch to the lowest brighteness and 2g, that will give way more battery than uc/uv will.
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+1 on the battery topic. Even at a high OC the battery drain is not that much worse... a little yeah but not too severe.
Also good point about UC.. wasn't thinking about that at all ..underclock what!?!?
some people falsely think that the phone runs at 1ghz all the time, when in fact it downclocks itself and ramps up clockspeed when it needs it....so unless you have an app thats using 100% CPU all the time, your phone is running around 200mhz at idle.
Pirateghost said:
some people falsely think that the phone runs at 1ghz all the time, when in fact it downclocks itself and ramps up clockspeed when it needs it....so unless you have an app thats using 100% CPU all the time, your phone is running around 200mhz at idle.
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+1 again Although there are different governors that do different things most phone at stock will idle down to 200mhz. My phone for instance idles down to 800mhz, but thats just my prefrence
Yep, I meant OC/UV. I typed too fast for my own good!
Good points
Thanks for the message on how little battery undervolting saves. That was quite helpful. I did try the discussion board for Cognition, but no one seemed to be posting on using an alternate kernel, which is why I asked for recommendations here.
I believe Cog is KB1 based, so this kernel should work: http://forum.xda-developers.com/showthread.php?t=988805
Thanks I will certainly trie eXist's kernel.
Ernesto47 said:
Thanks I will certainly trie eXist's kernel.
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If you want the best battery life, I suggest something other than cognition. In my experience, i9000 based custom roms get better battery life.
Sent from my CM7 powered captivate
@sixstringsg I notice that you are using Cyanogenmod. I keep looking at that, but since it was still not listed as stable, I was not sure whether to try it. How are you finding the stability?
I have a couple of question/advices I want to receive an answer for about CPU.
So I am struggling to get better battery life without hurting performance.
1) Can CPU apps hurt battery life by themselfs. I mean could only using an app not regarding the settings damage the battery life. Is it better to let the cpu work by itself and not any apps managing it?
2) Which is the best CPU control app?
3) Will Underclocking improve my battery life a lot and will it make performance worse. What are the best settings to keep battery life and performance optimized at the same time. If I want to play heavy games I will overclock for the time I play the game. But I don't want my cpu to be working at 1600ghz for instance when I am not doing gaming or similar heavy processes. What are the best settings to improve battery life but not hurt performance?
If you use an app like SetCPU, you can have profiles. I used to have it so that the phone would underclock when the battery reached a certain % or was too hot.
If you're S-Off and rooted, you can get way better battery life if you flash a new kernel. I'm using Faux v004, I've set SetCPU off and just let the kernel do its thing, and my battery life is at 1 day and almost 15 hours.
(I also play a lot of games and the Faux kernel is very resposnive. My games load much faster that they did on stock kernel)
Thanks! I am using this Kernel http://forum.xda-developers.com/showthread.php?t=1216197 and I find it good. I am rooted and used SetCPU in the past so I know all about profiles and etc. But my questions were. Do programs like SetCPU drain battery? And which best CPU program? And what about undervolting?
SsBloodY said:
Thanks! I am using this Kernel http://forum.xda-developers.com/showthread.php?t=1216197 and I find it good. I am rooted and used SetCPU in the past so I know all about profiles and etc. But my questions were. Do programs like SetCPU drain battery? And which best CPU program? And what about undervolting?
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Apps like that don't really have any more of a drain than checking your email or receiving a text. If using Faux Kernel, there's an app out there designed for it that helps with clocking and undervolting it, made by the man himself. If not, AnTuTu has one on the market, I think.
sshede said:
Apps like that don't really have any more of a drain than checking your email or receiving a text. If using Faux Kernel, there's an app out there designed for it that helps with clocking and undervolting it, made by the man himself. If not, AnTuTu has one on the market, I think.
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Fauxclock hasn't been updated in ages and it's by Romanbb, not faux, afaik.
As for the OP's questions:
1. Not really. I haven't noticed any extra battery drain with CPU apps so it's probably not significant.
2. I don't think there's a 'best' CPU app. I used to use SystemTuner, which worked fine for me, but I switched to SetCPU because I wanted to underclock the intellidemand governor on faux's latest beta.
3. Underclocking will lead to some improvement in battery life. As for undervolting, some people say it helps, others say it's a placebo; personally I've never bothered with it. You could try using faux's kernel with the intellidemand governor, which sets the clock speed (and whether the second core is online/offline) depending on the CPU load. As for best settings, it depends on each individual kernel and your own personal needs, so you might want to try flashing a few custom kernels to decide which one is for you.
hunter890 said:
Fauxclock hasn't been updated in ages and it's by Romanbb, not faux, afaik.
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Ah, learn something everyday. Whenever I sideloaded the apk on CM7, the author was listed as "faux123".
sshede said:
Ah, learn something everyday. Whenever I sideloaded the apk on CM7, the author was listed as "faux123".
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I know. I used to get confused too, especially since the app is called fauxclock! But faux mentions it's made by Romanbb on his kernel thread so... yea.
Sent from my HTC Sensation using XDA
So I have not much time to experiment with Kernels rights now. I have tried thomas.rains and Dagr8's kernel.
From people's experience. Which of the three Kernels (I forgot to mention flapjaxx) do you think gives better battery life in idle state and screen on state? I know on Dagr8 in Badass governor, I have been getting 18 hours with medium use and 20% battery remaining. I just flashed thomas.raines kernel today, so I will test out the battery performance with my daily use.
No best threads allowed
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I've recently started using the Lightning Zap! kernel as part of the Nibbles ROM. It doesn't have as many governor choices as some other kernels, but I've found it thus far to be solid and with fantastic battery performance.
xcrazydx said:
No best threads allowed
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I forgot about that. Does the re-wording work?
Wallcrawler77 said:
I've recently started using the Lightning Zap! kernel as part of the Nibbles ROM. It doesn't have as many governor choices as some other kernels, but I've found it thus far to be solid and with fantastic battery performance.
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That's great. I help others can get back. How did it compare with other kernels?
Edit** I realized how vague this questions was. In terms of performance and battery life, do you think it is better?
I know each kernel has it's strength and weakness, but just strictly in terms that I will not overclock and I want the best battery life and best performance, which kernel do you think give the whole package?
In also installed Nibble a couple of days ago, two kernel options, can't remember the exact name of the kernel I chose, it had a Zap in it, and it was version 3.
I had used Sean's on ICS, and was going to go to Sean's JB, but I started reading threads and liked what I read about this ROM.
It is the most stable ROM I've ever installed, and with the clock slowed down to 1,026, conservative governor and other power tweaks, I'm getting the best battery life I've ever gotten on any rom on this phone.
Very Very pleased. Install and donate!
jee'sgalaxy said:
That's great. I help others can get back. How did it compare with other kernels?
Edit** I realized how vague this questions was. In terms of performance and battery life, do you think it is better?
I know each kernel has it's strength and weakness, but just strictly in terms that I will not overclock and I want the best battery life and best performance, which kernel do you think give the whole package?
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In my experience the kernel doesn't make THAT much difference with battery life. I manage mine through controlling what's allowed to sync, disabling refresh in social apps, etc. The Lightning Zap kernel does a good balance of perf/batt without any need to tweak anything, but you can always try the KO kernel instead and tweak the governors, etc to your heart's content.
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I reported this thread best threads are not allowed here
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Their threads are full of opinions. Search for topic words to find out, test and make your opinion. Locked
So since now it's allowed to ask... What are the best kernel/settings for battery life, counting I don't do heavy stuff (I don't care about performance)?
Although its allowed to be asked now, it doesn't mean the answer changes. Your question addresses 2 things.
1) "best"
2) "battery"
Well let me start by saying in regards to ROMs and kernels, there is no "best". Best is subjective. What is best for me is not always best for you. That's why these threads previously were not allowed.
Forgiving the term "best" in the above context, let's look at kernels and battery life. Now here is a shocker - they're all exactly the same!
Battery is determined by how you use your phone. Your settings such as brightness and auto updates etc as well as what network you're on and how strong your signal is.
Kernels do have optimisations that could lead to pretty much unnoticeable improvements in battery life but if they're in one custom kernel, they're in them all.
"But, but how come I get better battery on kernel x than kernel y? Surely kernel x is better for battery?"
No! There is no battery difference between kernel x and kernel y. It may seem like kernel x is better for battery but different developers set different kernels up differently. Dev x maybe set kernel x up for battery and dev y set kernel y for performance. So out of the box, the kernel x seems better. But all YOU have to do is change the kernel governor settings and make kernel y the same as kernel x on battery or make kernel x perform as well as kernel y.
In short, there is no such thing as a kernel that is best for battery. Hopefully you have learned this now. Choose the kernel with the FEATURES you want THEN learn to tune the governor to get what you want out of it.
All the kernels here are good.
Sent from my Nexus 5 using Tapatalk
as @rootSU said, "best" does not exist. we all use our devices completely differently so best kernel would be best depending on your personal needs and how you use the phone. also, battery life is all about how you petsonally use your phone, how you set it up, what apps you use, and most importantly is the quality of phone/data signal. everything else is very minor in relationship to battery.
rootSU said:
Although its allowed to be asked now, it doesn't mean the answer changes. Your question addresses 2 things.
1) "best"
2) "battery"
Well let me start by saying in regards to ROMs and kernels, there is no "best". Best is subjective. What is best for me is not always best for you. That's why these threads previously were not allowed.
Forgiving the term "best" in the above context, let's look at kernels and battery life. Now here is a shocker - they're all exactly the same!
Battery is determined by how you use your phone. Your settings such as brightness and auto updates etc as well as what network you're on and how strong your signal is.
Kernels do have optimisations that could lead to pretty much unnoticeable improvements in battery life but if they're in one custom kernel, they're in them all.
"But, but how come I get better battery on kernel x than kernel y? Surely kernel x is better for battery?"
No! There is no battery difference between kernel x and kernel y. It may seem like kernel x is better for battery but different developers set different kernels up differently. Dev x maybe set kernel x up for battery and dev y set kernel y for performance. So out of the box, the kernel x seems better. But all YOU have to do is change the kernel governor settings and make kernel y the same as kernel x on battery or make kernel x perform as well as kernel y.
In short, there is no such thing as a kernel that is best for battery. Hopefully you have learned this now. Choose the kernel with the FEATURES you want THEN learn to tune the governor to get what you want out of it.
All the kernels here are good.
Sent from my Nexus 5 using Tapatalk
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simms22 said:
as @rootSU said, "best" does not exist. we all use our devices completely differently so best kernel would be best depending on your personal needs and how you use the phone. also, battery life is all about how you petsonally use your phone, how you set it up, what apps you use, and most importantly is the quality of phone/data signal. everything else is very minor in relationship to battery.
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These for sure ^^^^
Anyone that says otherwise is simply misinformed. ?
The kernel itself has nothing to do with battery life, it's the CPU and GPU tuning that effect performance/battery life and each kernel is probably tuned a little differently by default. That being said, you can tune any custom kernel any way you want.
rootSU said:
Although its allowed to be asked now, it doesn't mean the answer changes. Your question addresses 2 things.
1) "best"
2) "battery"
Well let me start by saying in regards to ROMs and kernels, there is no "best". Best is subjective. What is best for me is not always best for you. That's why these threads previously were not allowed.
Forgiving the term "best" in the above context, let's look at kernels and battery life. Now here is a shocker - they're all exactly the same!
Battery is determined by how you use your phone. Your settings such as brightness and auto updates etc as well as what network you're on and how strong your signal is.
Kernels do have optimisations that could lead to pretty much unnoticeable improvements in battery life but if they're in one custom kernel, they're in them all.
"But, but how come I get better battery on kernel x than kernel y? Surely kernel x is better for battery?"
No! There is no battery difference between kernel x and kernel y. It may seem like kernel x is better for battery but different developers set different kernels up differently. Dev x maybe set kernel x up for battery and dev y set kernel y for performance. So out of the box, the kernel x seems better. But all YOU have to do is change the kernel governor settings and make kernel y the same as kernel x on battery or make kernel x perform as well as kernel y.
In short, there is no such thing as a kernel that is best for battery. Hopefully you have learned this now. Choose the kernel with the FEATURES you want THEN learn to tune the governor to get what you want out of it.
All the kernels here are good.
Sent from my Nexus 5 using Tapatalk
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Well said!
Sent from my Nexus 5 using Tapatalk
People never believe this to be true lol. So hard to explain it sometimes. Maybe this answer needs a sticky thread?
It's mentioned in the battery help thread....just no one believes it. Lol