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This is probably a stupid question but I'll ask it anyway. I've noticed my phone draining lately (or maybe it's not, I'm not quite sure what the battery life used to be xD), and I recently overclocked my phone to 1.25 GHz (my profile on SetCPU is ondemand), does overclocking affect the battery that much?
I run Froyo (rooted with wifi fix and the 1.25 GHz kernal)
I'm using an ultra low voltage kernal at 1ghz and haven't noticed a difference, if anything it seems like it's better.
I guess it probably largely depends on what kernal.
I've been overclocked for 4+ months. The first month before I rooted, I was getting around 16-18 hours on a full charge at the stock 550 speed. After I rooted, a lot depended on the rom (lesser so) and the kernel (more so). I think the best performance I got was on ChevyNo1's SS rom (2.1) with one of his kernels ... 40+ hours overclocked conservatively at 800. My first shot some time back with CyanogenMod got me 3 hours with the early Bekit kernels but the past several versions up through 5.0.8 I was getting about 30 hours clocked at 800 with a jdlfg kernel. Now on Froyo I'm getting close to 30 hours again conservatively at 800-1000 ... which on a 2.2. rom is more like 1200+ since its faster.
So, in short, my battery life has significantly improved while running faster than stock. But no 2 Droids are identical in terms of how a rom and/or kernel perform. With 2.1 roms my Droid seems to like jdlfg's kernels, while on 2.2 the P3droid kernels do good. But that's what I found out via a lot of trial and error, not anyone's post saying "You must try ______'s kernel (or rom) as its da bomb!"
I would like to include that the post above by "cvhovey" provides some valuable information that might interest you and suggest anyone untreated in this thread to read that post.
Using an application like SetCPU you can throttle down the processor speed when the screen is off, this reducing heat and gaining better battery life. This doesn't mean you will get better battery life if you use your phone all day and never turn the screen off. But is totally worth it because u feel like I'm getting awesome battery life, plus an amazingly fast phone because SetCPU will overall me to my personal preference of 1100mhz on demand.
The answer to your actual question depends on how well you set up your phone preferences according to what benefits you the most, and what method of adjusting processor speed. I only mentioned one here, there are mire ways than just an APK.
Sent from my Droid using XDA App
PetRiLJoe said:
Using an application like SetCPU ...
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Click to collapse
1+ on that. But how one uses SetCPU can also make big differences, such as which governor is selected. SetCPU at 400-1250 with the Performance governor will essentially run at its highest speed all of the time (if I'm correct), whereas with the Conservative governor will ramp up from 400 to 1250 at a slower pace, or at a faster face with Ondemand.
This thread can give you some helpful tips: Battery Saving Techniques - Theories in Test
Alright, thank you for your help ^^
i used SetCPU and my phone had continuously reboots...
I just had to uninstall it..
Were you using profiles in any way? A specific ROM? I've had similar a experience with certain ROMs (specifically UltimateDroid).
Best guess is that it just didn't play nice with the modded kernel.
Sent from my Droid using XDA App
I have a question: why I can't overclock my SGS past 1.2 ghz. When I try to set for example 1.3 or 1.4 it freezes and I take out the battery in order to make it work again. Is there something I do wrong, is it a general problem with more SGSs? If somebody can , I really appreciate. Thanks
it is a kernel thing.
the kernel has to support those frequencies.
Sent from my GT-I9000 using XDA Premium App
I tried with tegrak overclocking with voodoo kernel (the application itself doesn't need a kernal that supports those frequencies) and with Supe Optimized Kernel (1.4 ghz) and voltage control and setcpu and is the same result:freezing.
Not every cpu is capable of stable overclocking past a certain threshold. You have probably hit the max speed your cpu can maintain.
I agree with you but then why there are other people with the same phone as me that can overclock them at 1.4 ghz?
With CM7 or miui and either bilboa or zacharius kernel you can overclock to 1300 but I haven't found a kernel that allows 1400 either, I think those that are doing it are hacking the CPU settings themselves.
My phone gets really hot at 1300 running apps like dungeon defender so 1400 might just be a bit too much
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I am using Darky's 9.3 ROM but my problem is that i can't even touch 1300 mhz because my phone freezes.
Maybe a dumb question, but, do you overvolt as well as overclock? Maybe the cpu isnt getting enough juice?
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Mirasdad said:
Maybe a dumb question, but, do you overvolt as well as overclock? Maybe the cpu isnt getting enough juice?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
+1... not sure if there is much benefit at all to undervolting.. it just seems to make it immediately less stable...
can someone shed some light?
I've seen someone test this on another forum somewhere, and the difference the undervolting makes to the battery length is negligible..
kickassdave said:
+1... not sure if there is much benefit at all to undervolting.. it just seems to make it immediately less stable...
can someone shed some light?
I've seen someone test this on another forum somewhere, and the difference the undervolting makes to the battery length is negligible..
Click to expand...
Click to collapse
The principles of ovetclocking a PC also aplly to phones. Undervolting reduces the power available to the CPU. Undervolt a little and you'll save a little power. Undervolt.too much and the CPU won't get enough power to do basic functions hence freezing.
Every CPU has a limit to which you can over clock. You can overvolt to a point but then then the CPU reaches its limit.
From what I understand (read in another post) the hummingbird processors are not suited to overclocking. Where the arm such as that in the Motorola milestone clock really well. (You can oc a 600mhz milestone to 1ghz before you start seeing instability)
Hope this helped.
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I understand the intention of undervolting as i am pretty good with PCs. Got my good old i7 overclocked constantly. But undervolting on the SGS has yet to show me any definitive advantages.
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Welcome to the Thrillz kernel for LG Thrill 4G (may be compatible for O3D).
Standard disclaimer: You bork, your phone. I take no liability. K?
Includes OC to 1.2 native (no modules) and 100 MHz frequency.
cifs.ko module built in.
Conservative governor enabled.
init.d support native.
More to come.
V2 update includes:
Insecure boot
persistent root shell in adb
Removed 100 MHz frequency (caused more issues than it was worth)
Trying a 200 MHz frequency.
V3 includes:
Lock 200mhz when sleep (was set at 300, swapped due to removal of 300)
---Working on other improvements, may be a week or two due to cleanup of code and removal of non-4430 chaff---
V4
Updated frequencies (300, 600, 800, 1000, 1300)
Lower cpu voltages.
#Note, seems screen is eating more battery than CPU. Will investigate.#
Plan for V5
More governors, possible UV compatible with Xan's Voltage Control app.
If you have suggestions, ideas, please give me them.
I do plan on more governors (maybe smartass, interactive, ect....) more io schedulers (bfq, ect...) and anything else that comes my way.
Special thanks to those who have gone before me and helped my learn what I have: gtg465x, LinuxBozo, and Entropy512 for everything that I've learned from them in the Infuse 4G forums, Excaliburinhand for encouraging me to start my own kernel, CallMeAria, Urabewe, tylerwagler and gtg465x again for what they've done here before me... and to you for choosing this kernel (I know... Video game cheezy, but it's true. )
Git is below, it is under the wagler kernel git as it was what I forked and am pushing to. I decided it's time to get started with this.
And please remember, thanks button is good as is fueling my insanity. If you look at my Infusion kernels, I do recognize my "Insanity Crew." (and if you want to be kept in obscurity, I respect that as well. )
Good job man, everyday this forum gets better.
...fighting ninjas at night. Talking about this and that.
Work pretty good on o3d l'll check battry life let u know later
Sent from my LG-P925 using XDA App
Thanks! Keep the comments and suggestions coming! (hoping for p920h/p925 GB leak and official GB source for p920, but I'm fully supporting this in the mean time. Forward ho!)
So far this is best kernel for my rom (v10kv4) so far I got best mobile speed 1.6up 5down i never got this speed any rom or kernal before best speed i had before 1.5. &4 from thriller
Sent from my LG-P925 using XDA App
I hate to report that my battery life did not impress me at first but after charging it seems to be doing better. But i was losing about 15% every 3 hrs in idle. No wifi data or anything.
Sent from my LG Thrill 4G...
Good to see you guys pushin' the kernel movement forward, and sharing your work.
Good deal on getting that built in overclocking going as well. I've been running the kernel for the past day. I did notice an issue, though. Maybe it's just my phone... But the 300mhz OPP, is not being utilized.
I've attached some screenshots.
I was planning to mention that, will try to fix. (100-300 bug) on battery life, what governor are you running? I've found better life on conservative or on demand.
my battery life is decent not the best try to calibrating battery will give you a decent battery life
bedwa said:
I was planning to mention that, will try to fix. (100-300 bug) on battery life, what governor are you running? I've found better life on conservative or on demand.
Click to expand...
Click to collapse
Usually I'm in hotplug or performance... My device has no service, so it doesn't see "normal use" like most. Most of the time it just sits and sleeps.
So, what I did yesterday, really because I wanted to see if you guys squashed the random reboots I've notice in my own playing with LG's kernel source... Had a fully charged phone, flashed your kernel, ran a few benchmarks, still had over 90%, and just let it sit in hotplug. got back to checking it out maybe 12 hours later, noticed the drain, checked setcpu, and that explained it for me. My phone normally would be 80% to 90% in 300mhz... But I don't think 100mhz is able to accomplish most tasks, so it's always popping out, even when it should be idle sleeping.
One thing for me is wireless tethering.. The device needs to be able to accomplish this in the background, and 300mhz even on a DroidX is able to accomplish this. 100mhz is a no go, though.
If you find it real difficult to get 300mhz functioning with 100mhz, I'd say chop the 100mhz out for now, and give us a bump, or atleast put out a 'high voltage' 1388000 mV(TI's kernel 3.0 number) top slot version of the kernel... The overclock module still works with your kernel, BTW... So, in combination with the voltage bump, those that are real speed freaks can push toward that 1300mhz mark with stability.
P.S. No random reboots, so that gets a big thumbs up!!!
I'm going to try and keep to 5 freqs, going to see if 200 works. If not 300 will be low end. Wanting to see if 1.4 or 1.5 is possible with proper voltage. (we should reach sgs II performance benches at that level. )
bedwa said:
I'm going to try and keep to 5 freqs, going to see if 200 works. If not 300 will be low end. Wanting to see if 1.4 or 1.5 is possible with proper voltage. (we should reach sgs II performance benches at that level. )
Click to expand...
Click to collapse
hehehe twould be pretty nice to rub in the face of the acclaimed best device..
Running new Kernel now, so far seems to be running smooth, max 1200, min 600 on Performance governor
Trekfan422991 said:
hehehe twould be pretty nice to rub in the face of the acclaimed best device..
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Click to collapse
It would be nice but I have yet to see my Thrill out perform my STOCK SGS2 yet with any kind of tweaking.
I only hope it can be done.
sent from my Stock Samsung Galaxy S II
I think I got an issue. Starts to lagg when typing/texting. Maybe its the governor I used. I tried with both concervative and ondemand. Also hotplig too. Conservative had the least amount of lag but still noticeable. The other 2 were way too laggy. Unusable.
I believe that's due to the 100 MHz freq. I rebuilt later night without it and while I am typing this there is no lag for me. Re-uploading V2.
Anyone flashed this can comment on battery life and any issues?
Haven't had it long enough for battery use, but it made slim doomed speedier.
Sent from my LG-P925 using xda premium
Flashed it. So far no lag. Battery life kinda iffy. But it's a brand new battery. I'll clear the stats and see how battery life is then.
No issues, phone feels really fast, more batt drain though. I like it.
Sent from my LG-P925 using XDA App
hey everybode!
i wanted to know i have rocket rom and i want to use setcpu to overclock my kernel
and sebastian is max to 1400 is thers good kernel that i can play with it till 1700mghz or 1900?
but it need to be stable
Abyss goes to 1700. My CPU can't take it, sadly
bubu23 said:
but it need to be stable
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Click to collapse
The stability is dependant on your hardware; some chips can only overclock to 1500Mhz and some can overclock all the way to 1900Mhz. It is not something the kernel has a say over.
Don't all of the notes have the same cpu? Why can some be overclocked and others not?
Sent from my GT-N7000 using Tapatalk
kkg720 said:
Don't all of the notes have the same cpu? Why can some be overclocked and others not?
Click to expand...
Click to collapse
They all can be overclocked, but how much is a different thing altogether. It's quite simple really, not every chip manufactured is of equal quality; some chips have more imperfections. The more imperfections the less it can be overclocked before it becomes unstable. It's the same thing as on PCs, too.
Stable is it when you do nothing and use it in originally form. Overcklocking need more Power more power is less time you enjoj your note!
Generally these chips are made to tolerate a certain speed, and because of variability, the manufacturer drops the speed tolerance to ensure overall quality. Some will still be able to manage 1500, 1700, or even 1900 (although rarely, I'd say). Just about all of them tolerate 1400, so very few are defective at the stated tolerance. With 5 million, you will get a few, however.
This is one of those rare occasions when statistics have a benefit in the real world!
jeromepearce said:
Generally these chips are made to tolerate a certain speed, and because of variability, the manufacturer drops the speed tolerance to ensure overall quality. Some will still be able to manage 1500, 1700, or even 1900 (although rarely, I'd say). Just about all of them tolerate 1400, so very few are defective at the stated tolerance. With 5 million, you will get a few, however.
This is one of those rare occasions when statistics have a benefit in the real world!
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Click to collapse
I will keep mine at stock speeds because ignorance is bliss
bubu23 said:
hey everybode!
i wanted to know i have rocket rom and i want to use setcpu to overclock my kernel
and sebastian is max to 1400 is thers good kernel that i can play with it till 1700mghz or 1900?
but it need to be stable
Click to expand...
Click to collapse
There are many out there that will let you overclock. Search the Android development forum.
Like most, I have flashed heaps of times, probably at least four or five times a week when I first got this wonderful Note, but in the last month or so have only been tempted to stray three or four times. Personally Franco 6 is best for me, because I favour battery life and stability rather than overclocking (1400MHz is not bad as a standard!!)
I would encourage you to try a few for a few days, as long as you backup often you should have a great experience!
Are all kernels capable of overclocking?
Is there one that overclocks the best?
How do you tell how high you can go?
Do you jusy keep overclocking until the NOte stops working?
If so, there must be a fine line.
jeffs99 said:
Are all kernels capable of overclocking?
Is there one that overclocks the best?
How do you tell how high you can go?
Do you jusy keep overclocking until the NOte stops working?
If so, there must be a fine line.
Click to expand...
Click to collapse
Stock kernel isn't capable of overclocking.
One way to tell is to download things like SetCPU which detects the range of the clockspeed. Another way is to simply read the description of the kernel thread.
How high your phone can go is an individual thing. You need to overclock in slight increments (say 50mhz at a time) and run a stability test to see if the phone crashes or not.
You DO NOT pull the slider all the way to 1.9 ghz and "see" if anything happens. If you fry your CPU, do not come to us for help.
This is why I don't like overclocking, it's a waste of time to run the stability tests, etc.
In summary, you need to raise it a little bit, and run stability tests and repeat the process until your phone crashes. At that point, you'd know the last safe-stable clockspeed that your CPU can take.
PoisonWolf said:
Stock kernel isn't capable of overclocking.
One way to tell is to download things like SetCPU which detects the range of the clockspeed. Another way is to simply read the description of the kernel thread.
How high your phone can go is an individual thing. You need to overclock in slight increments (say 50mhz at a time) and run a stability test to see if the phone crashes or not.
You DO NOT pull the slider all the way to 1.9 ghz and "see" if anything happens. If you fry your CPU, do not come to us for help.
This is why I don't like overclocking, it's a waste of time to run the stability tests, etc.
In summary, you need to raise it a little bit, and run stability tests and repeat the process until your phone crashes. At that point, you'd know the last safe-stable clockspeed that your CPU can take.
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Click to collapse
Thanks!
What do you recommend for a good stability test?
I'm on franco.kernel v10 and OC to 1600 using Tegrak. Tegrak runs the stability tests automatically and reverts to stock 1400 if unstable or a reboot occurs.
I tried 1700 but Note rebooted after about 2 minutes. Booted right back up at 1400 with no problems. Re-set to 1600 and running smoothly.
kraz
Sent from my Beautiful, White GT-N7000 using xda premium
Set CPU has a CPU stress test
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I've always been a big fan of undervolting. These are the lowest voltages I can get stable at these common speeds. I found I can underclock the Matr1x kernel further than some others I have tried for some unknown reason. How low have you been able to go? Also, what programs do you use to test stability? So far, I have been running Antutu test completion as a measure of stability. Any suggestions otherwise?
288MHz - 650mv
1.02Ghz - 800mv
1.51Ghz - 1000mv
ROM: Bionic AOSP V3
Kernel: Matr1x 6.5
Noob question~ Why do people undervolt?
WarToilet said:
Noob question~ Why do people undervolt?
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Click to collapse
To increase battery life,
The Long answer is that the CPU has a number of parameters where Clockspeed (MHz) and voltage (mV) are two. Clockspeed, well that is speed. Voltage is related to the amount of energy provided to the cpu, undervolting means that you feed the CPU less juice but demand that it runs at the same clocks. You are essentially starving the CPU,it uses less energy, but can become unstable if the voltage is insufficient to maintain operations. Manufactures always have extra voltage as a safety margin so power users can check their CPU bin (slow, normal, fast or faster) and lower voltages step by step until they crash the phone during a stress test, increase the voltage slightly and boom, your phone uses less battery power while being just as fast.
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
estallings15 said:
I undervolt to reduce heat. It makes a significant difference. The battery saving is minimal, but the temperature difference is VERY noticeable.
Click to expand...
Click to collapse
Took words from my mouth. This this and this. It reduces heat, which in turn reduces battery use. UV by itself doesn't save a lot of battery, it's the consequences of it. I'm normally not a fan of UV, but with current N4 sw/fw it NEEDS it. It's way too high.
Interesting observation. As of recently my phone jumps up by 3-5c from 37-38 hover. Never used to do it before, not until i got it up to 50c for about half an hour last week. Previously it would stay steadily at 37-38, now it spikes up now and again during use. What's interesting about is that once it goes over 40c battery use increases drastically. So i wonder if people that have really good battery life don't have phones that go over that temp often and vice versa.
I haven't played around with the values too much yet, just a -100mV across the board. This seems to work just fine, so I might experiment some more..
Using Franco test-r69 at the moment.
Sent from my Nexus 4 using xda premium
I undervolt to prevent heating like others say. My Antutu scores drop like a rock when I'm at stock clockspeeds mostly likely due to thermal throttling. Now I can run it repeatedly without having scores drop. It saves battery and runs faster while running games even for very short periods of time, so I am a big fan of undervolting. :good:
Undervolt to reduce power usage, think of the stock voltage as normally being more than is required, think of running for a bus yet you have 2 minutes why waste energy when you can walk and still make it .
Undervolt for less power usage and less heat produced meaning battery performance is better (cooler battery is a more efficient one) and performance is up as you avoid any thermal limits in place .
Great stuff undervolting, I have managed to get -150mV across the board ( 1.5ghz @ 1000mV) and 288mhz is 162.5mV .
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
The more the heat, the faster the battery drains. Since undervolting decreases heat, im sure it should increase battery life. Maybe not for browsing or calling, but playing a heavy 3D game.
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
zakoo2 said:
how can you guys undervolt? is there an app for that? i bought Franco's kernel updater app, but there's no option to undervolt in there.
edit: just found an app called setcpu, is that it?
sent from my Nexus 4...
Click to expand...
Click to collapse
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
aimcr7 said:
You can do it from franco kernel updater, from frequencies and voltages - voltages - cpu voltages
But i dont recommend you to undervolt if you dont know what you do.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I'm familiar with undervolting both on PC and on phone, but i had a Motorola defy before my nexus and undervolting there was a bit different.
sent from my Nexus 4...
zakoo2 said:
is it normal that the higher the frequency the lower the voltage in setcpu?
screenshot: http://db.tt/k6r8c5oI
I'm quite new to nexus 4 undervolting, what's the average amount i can lower the voltages with? (i have a nominal CPU)
sent from my Nexus 4...
Click to expand...
Click to collapse
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
italia0101 said:
I came from a nexus s ... And one member of xda went to amazing lengths to show that undervolting really made very little differences in battery life ... And it def wasn't worth the instability .
He did loads of tests and I mean loads and basically showed that in helped so little that if you had a reboot you would use more power in rebooting then saving via undervolt
However . it is worth it for the heat decrease for sure
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Former nexus s user here, the reason nexus s didn't benefit in battery life much was that it only had 1 core, and used a higher nm manufacturing process, 65nm -> 28nm. Lower voltages in the 28nm means that it multiplies the heat/power savings more than a 65nm, and the 4 cores multiply the savings by up to 4.
FatalityBoyZahy said:
How are you able to undervolt with SetCPU? I'm not seeing that option using CM10, and Harsh's kernel.
Click to expand...
Click to collapse
don't know, it was just there. did you try to reboot after installing the app?
I'm on Franco's kernel btw.
sent from my Nexus 4...
Pls what are the right values for under volting Samsung captivate
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I am new to this and my battery goes +40°C when I play simple games... I am running Franco's kernel r71 should I do UV? If so how much? Thanks in advance
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xtremer92 said:
Pls what are the right values for under volting Samsung captivate
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Click to expand...
Click to collapse
this is the lg nexus 4 forum.
sent from my Nexus 4...