Develop Bugs

[Q] The perfect SetCpu settings for powersaving

I'm really struggling with battery life at the moment. Has anyone got settings I can use to save on battery life in SetCpu? Profiles etc

+1
I'd like to know too.

I would also like to know =[ my battery dies wayy too fast. I have the darkstone froyo build on my htc hd2 phone energy rom. Any programs or SETcpu settings that will help out?

If your on a rom with preflock disabled then you can underclock.
The only thing you need to change in setcpu really is to make a profile for screen off and set it to 245 (or whatever is the lowest I can't remember) both max and min (leave it on demand, or interactive if your rom has that).
This should give you about 10-15 hours longer battery life

so i wouldnt have to make any other profiles like battery? temperature? stuff like that? should i get rid of my green power and advanced task killer?

No you can keep them (well I don't know what green power is....)
The other profiles are mainly only needed if your OVERCLOCKING, however if your not touching the default max (main profile) then your not overclocking (1ghz).
To save power you UNDERCLOCK which setting a lowered screen off profile would do.
If your slowing the CPU down then the temperature will not rise, so that profile is not needed.
And you don't need to slow the phone down when your using it so none of the others are really needed either.

No you can keep them (well I don't know what green power is....)
The other profiles are mainly only needed if your OVERCLOCKING, however if your not touching the default max (main profile) then your not overclocking (1ghz).
To save power you UNDERCLOCK which setting a lowered screen off profile would do.
If your slowing the CPU down then the temperature will not rise, so that profile is not needed.
And you don't need to slow the phone down when your using it so none of the others are really needed either.
i think im kinda get what you're saying (sorry im kind of slow) so i had just deleted my other profiles and made a screen off one have it set to max all the way right and min all the way left, on demand, priority 100. Now on the main screen i think i touched it cause i read somewhere for max all the way to the right and min all the way to the left. This is confusing lol

The settings I have for my Desire:
Default:
Conservative 245-998
Profiles:
Screen Off - Priority 100 - Powersave
Charging/Full - Priority 50 - OnDemand 245-1305
Battery < 30 - Priority 0 - PowerSave
Running along side JuiceDefender, battery life is acceptable to me

jdeezyboo said:
so i wouldnt have to make any other profiles like battery? temperature? stuff like that? should i get rid of my green power and advanced task killer?
Click to expand...
Click to collapse
Remove everything, setcpu included
Sent from an ipho.../ NETWORK DOWN-PLEASE DON'T TOUCH THE PHONE

Remove everything, setcpu included
Sent from an ipho.../ NETWORK DOWN-PLEASE DON'T TOUCH THE PHONE
__________________
When Chuck Norris holds the Iphone4, the signal increases
That totally defeated the purpose of my question and others before me. Our battery lifes sucked without any programs so now we delete it?

I used darkstones froyo for awhile too. Battery drain killed it for me. I had no luck with anything. Changed to a nand build and its much better. Apparently SD builds just use more battery. With the SD froyo I could never stay below 60ma a few times would drop to less than 10ma but just not consistent. I lost about 8% an hour in sleep mode. Give a well designed nand build a go. In sleep I hover AT 4ma. My battery with Moderate use easily last the day, heavy use (multiple calls, emails, and browsing for an hour or two) still does require a recharge

Im using carbon ara theme with pcb just turn data off wen aint using it via toggle and have a profile for sleep in set cpu for min and max of 245 and from full charfe at 7am by 6 pm im still 65%. Thats using fb checkin email playing angrybirds and checking the forum
Sent from my HTC Desire using XDA App

I also use advanced task killer and kill all tasks wen not in.use
Sent from my HTC Desire using XDA App

bad idea as you are actually making your battery work more by doing that.
Sent from my HTC Desire using XDA App

uninstalled: Juice Defender Ultimate and Ram Manager Pro

i ran these through my seat-of-the-pants benchmarks, are there any other for these sorts of apps? , and can't tell any difference. the biggest difference maker that i have noticed is Titanium backup and freezing as many progs as i could and a better launcher.
i tested the phone as it initially came out of the box, removing the apps i could via app manager.
next, i ran it with JDU for ~4 days.
Then i ran Tit backup and froze many more apps and ran the phone with JD for 3-4 days.
then installed Ram Manager Pro and ran for a few days, then uninstalled JD and Ram Manager by itself for a few days
and finally uninstalled both, factory reset my phone, ran Tit Backup freezing everything i wanted and am now running that config for several days.
i can't see any change in battery life or perf between any of these.
what's your experience? did i miss the benefits? is there a more scientific way to test these apps on our phone?

I could be missing something, but my understanding of Ram Manager is that it controls how the cache works (RAM cache that is), aka, how previously opened apps are being handled, how long they stay in ram, or/and how often ram getting cleanup, etc. So theoretically there shouldn't be much of battery improvement with that app, only the performance on common used tasks.
As of Juice Defender, I've tried once, and realized it's not for me, I use push mail and listen pandora radio most of the time, it requires internet all the time. But in theory it should significantly save on battery if you don't use phone every second minute, cause it turns off everything and only turns data one every so often to check email, news, etc.
I guess it depends how you use your phone...
Have you tried SetCPU or such?
I use SetCPU to change CPU frequency, set min to 190mhz and max to 1500mhz, and max to 190 when screen off, yesterday with minimum phone usage in 7 hours used up 15%
And I wonder, by default, does Nitro set CPU to max and keep it that way or it also uses scheduling and changes speed as needed?
But I can tell you for sure, the network (HSPA+ here) usage uses as much battery as the screen, if not more...and network through WiFi saves on battery compare to HSPA.

[email protected] said:
I could be missing something, but my understanding of Ram Manager is that it controls how the cache works (RAM cache that is), aka, how previously opened apps are being handled, how long they stay in ram, or/and how often ram getting cleanup, etc. So theoretically there shouldn't be much of battery improvement with that app, only the performance on common used tasks.
As of Juice Defender, I've tried once, and realized it's not for me, I use push mail and listen pandora radio most of the time, it requires internet all the time. But in theory it should significantly save on battery if you don't use phone every second minute, cause it turns off everything and only turns data one every so often to check email, news, etc.
I guess it depends how you use your phone...
Have you tried SetCPU or such?
I use SetCPU to change CPU frequency, set min to 190mhz and max to 1500mhz, and max to 190 when screen off, yesterday with minimum phone usage in 7 hours used up 15%
And I wonder, by default, does Nitro set CPU to max and keep it that way or it also uses scheduling and changes speed as needed?
But I can tell you for sure, the network (HSPA+ here) usage uses as much battery as the screen, if not more...and network through WiFi saves on battery compare to HSPA.
Click to expand...
Click to collapse
that's my understanding of Ram Manager as well. but i didn't notice any perf changes in how fast apps open, close or switch v a Titannium freezing showing good results imo for that sort of thing.
i listen to slacker/pandora but it's mostly via wi-fi, so i was able to configure JD to keep the wifi on and turn off all the other radios but that didn't seem to provide me any benefits.
i have not tried setcpu but will def check it out, thx for the heads-up on that one.
re: network, it doesn't even show as a battery drain on this phone and i am in an LTE area, the 4glte status signal is always on. i was under the impression it was a massive drain, maybe the phone searching for a lte signal is the drain but once it finds one and locks on maybe it settles down. i have no idea but it's not on the list of what's using the battery.

Ram Manager Pro has several settings (Balanced, Balanced-More Mem, Hardcore Gaming, etc...). Did you try any of the others? For me I noticed improvement, but perhaps it's also because of the way I use my phone and that Ram Manager is more suited to my ways and habits... Or maybe it's just placebo and I'm drinking the kool-aid.
For Juice Defender Ultimate, I will say probably one of its' biggest capabilities is locking down the apps that turn on the radio for background updates. A definite battery drain for folks that use a lot of social apps as they compound the use of background updates. I personally turn-off ALL background updates except for mail. So JDU wouldn't tremendously help me.
Lastly, I completely agree with [email protected] about SetCPU. I don't know how the OS handles the frequencies but one of the biggest battery savers is definitely using SetCPU for dropping the min/max CPU speeds to minimum levels when the phone is sleeping.

I installed setCPU and it instantly created a laggy interface. very very noticeable. HAs anybody else tried this app with this phone?

Had this same problem. I actually switched of all apps. The phone on idle does not loose that much juice. Overnight I maybe loose 8-10%. I turn data off at night using Tasker.
Sent from my LG-P930 using xda premium

update
I've still been farting around with these apps, going back & forth between using them and not.
best I can tell ROM manager provides ~5% increase in ROM management, which is pretty good for a couple bucks eh.
JD is so much harder to gauge/compare. I think it does defend the juice but I can't tell how much. The one thing I do not get about the app is how it continues to show increased battery savings over the previous 48 hours. I can see how this works when the app is 1st installed but at some point over time that number should = 1 right? JD can't keep stretching battery life 1.5x over its own management system.

scott0,
You're right, unless there's some heuristics built in (probably not).
Sent from my LG-P930 using xda premium

Anyone using a good stats widget that would show mhz of cpu/baterry/ram?
Something light that would not eat battery. I used the one that came with antutu cpu master but that caused more problems.
Sent from my LG-P930 using Tapatalk

Just out of curiosity, do you have to be rooted to use Juice Defender? When I select the app in the market it tells me "This item isn't available by your carrier."
Are they telling me that AT&T has blocked a power saving app?

Battery test,monitor, usefull apps for saving battery

Hello guys.
I've made some tests for optimizing the battery and i've decided to share the results. I've also tested an extedend battery 2400mah. This battery needed a calibration which I'll explain here. Everything is free except for an app.
My device and settings are:
Xperia Arc S rooted, Doomkernel v22, Fw.62 GB
Governor smartassV2 1.4Ghz no overclocking
IO Scheduler Noop
I've also undervolted my CPU with -100mV for each frequency
Original Sony battery
You must have root privileges for your device.
I had the same problem with the 1% battery staying for hours with the 2400mha battery but you can solve this with a simple free application you can find on GooglePlay . The aplication name is "Battery calibration". I use the DoomKernel v22 and official android GB 2.3.4. I've made no supplementary kernel modifications for the battery calibration. Read the inside app indication for callibration.
If you have this reading problem with your battery you can use this app.
--------------------------------------------
Now lets start.
I recommend you to install the "CurrentWidget" free widget to see the current discharge rate on your screen and the voltage of the battery.
At approx. 3.5V the battery is completed discharged and the phone shuts down itself. Maximal value is 4.2V meaning the battery is fully charged.
To set up the "CurrentWidget" app, go into settings of the app and set the followings:
Update interval - 5 sec
Display Options - Widget Type -Clear Text
Display Options - Views - select Electric Current (mA) and Voltage (V)
Display Options - Customize - deselect Show last Update time and Show update now button
This widget also shows you when your battery is charging and when is discharging. The thunder sign goes green when charging and white while discharging.
This color detail is very important beacause the battery can show charged 100% but the battery is still charging for reaching the maximum capacity. Test for yourself and see.
Remember this thunder color conditions. You will be surprised.
I've attached a screenshot to see the widgets.
With the CurrentWidget you can easily optimize your android to save battery. I'm also using the free app System Tuner Task Manager Option to see the apps that are consuming Cpu and shut them down if dont needed, or uninstalling them. This is for idle mode.
I've managed to get -80mA -85mA battery drain in aireplane mode with wireless on, phone at idle and the brightness screen at 15%.
Idle means Cpu at 245Mhz and CPU load less than 5%
The -80m value you can see it on your screen if you set up the CurrentWidget widget app.
I've searched for days for such an app and it's perfect for seeing on the screen the battery drain every 5 seconds.
See attached file
I'm also using Temp+Cpu Pro Widget app for seeing the Cpu Frequency and the Cpu Load every 5 sec.
It is not recommended for the above widgets to set the update interval less than 5 sec because it is cpu consuming, resulting in higher battery drain.
With this combination of widgets you can easily find aplications that are battery friendly.
For example I've tested various movie players and there are differecies. For example Vplayer and QQplayer are not battery friendly.
You can test all the apps you use and alternatives to chose the ones that are battery friendly.
If you want , post your battery drain in aireplane mode with wireless on, phone at idle and the brightness screen at 15%.
Maybe we can save more battery.
(sorry for my english)
That's all.

What value do you have after wake up ? I have 2-5 mA. And when screen is on 60-90mA

after wake up I have 0mA even with wireless on but in airplaine mode
Can you also specify the kernel and firmware you use? I've never reached -60mA,
only -69 with wireless of, screen at minimum and in airplaine mode
Please specify the kernel and firmware if you post your results here

i will give this app a try and give u my commends guys

thanks

Blu Kuban - Kuban Kernal 3.0.15 battery life

Ive got blu Kuban 1.0.4.3 ROM on my phone with the attatched Kuban Kernal 3.0.15 and am having battery issues. I just recently deleted my facebook widget thinking maybe thats doing it, but it will last about 4 hours before it dies. Im downloading bad ass battery monitor to see if I can further look into whats sucking the battery power.

GO to developer option and click do not keep activities
maybe there something runing on the background you have to look at under battery or in appliication

OK I did that ill see if it changes anything. As of 72% battery left, battery monitor shows 69.8% app usage, and 51.8% is the Kernel. All of the apps listed don't use much under app usage its the kernel that is killing it. Does this mean I need a new Kernel? This cant be normal right? Can I use just any Kernel? Thanks

51% kernel is high, yes. See if other people have the same percentage with that kernel. If not, then maybe try a different kernel. agat's or sleshepic's kernels are also good and built from source. Btw, I wouldn't advise doing the Developer Options setting change to close all activities. That setting isn't meant for ordinary use and severely limits your multitasking abilities. "Closing apps" also has a minimal effect because of the way Linux deals with RAM. It turns out that opening and closing apps takes away more battery than keeping one running in the background.
If your battery isn't good, diagnose why with the following apps:
Betterbatterystats - Download this app and check your "Partial Wakelocks". Basically this checks what apps are waking your phone up when it's sleeping.
CPU Spy - This allows you to easily see how much time your phone has spent in each state. You get really bad battery life if your phone idles on 200 Mhz instead of Deep Sleeping. Your phone should be on Deep Sleep when the screen is off, or else your idle battery drain will be fast.
Other ways to save battery life:
Tweaking system settings
Get SetCPU/Tegrak/Voltage Control/Any other CPU Settings app and undervolt each of your processor states to -50 mV. By stock your phone's states come "overvolted" and you can conserve battery without loosing performance if you slightly tweak them. Don't go too low or your phone may get unstable and crash.
Use those same apps to underclock or set profiles to underclock under certain circumstances
Use those same apps to change your governor. Read up on different governors and how they scale your processor when needed. Here is a link that explains different governors - http://forum.xda-developers.com/showthread.php?t=1369817 . Usually "conservative" and "SmartassV2" and "Lulzactive" are pretty good with battery life. It all depends on how much performance you are willing to give up for low battery life.
Use those same apps to change your I/O scheduler. The scheduler, in simple terms, basically describes in what order apps will run, which will be prioritized, etc. The "SIO" scheduler is probably the best balanced one. "Deadline" I believe saves more battery life but maybe slow you down a little.
Apply tweaks that do it for you
In the general section of our forums, a developer named PhAkEer has posted some tweaks. His "dietpill" battery ones are really good for keeping your phone fast but saving battery life. If you have these tweaks though, they automatically choose a governor and I/O scheduler so manually changing them will only interfere if you decide to do this.
Change simple unneeded settings
Another reminder is that simple things can save you a lot of battery life. Turn off haptic feedback. Take off pulse light notifications (there are reports that these wake up your phone from Deep Sleep and put the processor back into the 200 Mhz state... thus taking away battery life). Turn off 3G when not needed (3G and 4G are huge drainers). Set WiFi to turn off when your screen is off. There is a ton of other stuff you can do.
Well I hope this long post helps you in your quest to find better battery life. Good luck

Tried putting the new agatas kernel on my phone and nothing has changed. CPU Usage shows 200MHz is 79% of sleep while deep sleep is only9. How to I go about dealing with this?

Check your wakelocks with Betterbatterystats. Otherwise just play around with some settings. For me it's usually WiFi that keeps my phone in 200 Mhz. I set WiFi to turn off when the screen is off. Maybe you have an app running that actively requires your phone's processor or something.

partial wavelocks is MAIL SERVICE - at 6.5% 5m 54s count 1953, AudioOut_! is 4.9% count 7 5m 54s, Juice defender 1.6% count 447 2m. So is it my email then? What is Kernel wavelocks?

any help here??
Did the new kuban update which switch kernels back, battery life has improved but is only 4 hours still. Deep sleep has gone up which is probaly why i saw an increase, but betterbatterystats shows no data connection and no signal to be high usually around 30-90 percent. It seems like Kernel percent has gone down tho around 30-40 usually...

I saw a post saying these are stock voltage -- is it correct?
200 MHz = 950 mV
500 MHz = 975 mV
800 MHz = 1075 mV
1000 MHz = 1175 mV
1200 MHz = 1275 mV
1400 MHz = 1275 mV
1504 MHz = 1350 mV
1600 MHz = 1425 mV
1704 MHz = 1475 mV

bhollehday said:
any help here??
Did the new kuban update which switch kernels back, battery life has improved but is only 4 hours still. Deep sleep has gone up which is probaly why i saw an increase, but betterbatterystats shows no data connection and no signal to be high usually around 30-90 percent. It seems like Kernel percent has gone down tho around 30-40 usually...
Click to expand...
Click to collapse
What is your awake time versus you screen on time. If you are having signal problems test out other modems which are in the updater. Make sure you update prl and profile afterwards in about phone. Not having signal/service will kill your battery no matter what because it then tries to search for it constantly. Last week I was somewhere that had no service in my hotel room. For 18 hours in my lab it only drained 10% with about 2 hours of usage, then I went to sleep for 6 hours and it was down another 40%. I turned it on airplane mode to save battery. Hopefully trying a different modem might help. If not I have some suggestions for that too.

cpu going nuts for no reason

I'm on stock, rooted, s-off
my device is getting extremely hot during normal use.(i dont play games at all, just whatsapp, facebook, news etc..)
sync is off, auto brightness.no google location reporting and history, no google now or history.
and using bbs to see what is going on ,i have no wakelocks and looking at battery screen, screen on time and awake time are almost identical.so nothing is keeping my device awake.
but for some reason, when the device is idle, the cpu goes nuts!
i installed cpu status bar xposed module so i could monitor cpu on real time, and i see the device jumping allot from 300mhz to 960 and 1000+ for no reason.(without touching it, and no apps running).when i touch the screen it scales to maximum.
it drives me crazy because i dont understand why the cpu behave like that.there is no logical reason for cpu going to max when i'm typing text.
its unbearable, cause its getting really hot while i hold it.
i have tried various kernels(elementalx, skydragon, faux, ionx, hacker kernel, but all of them shows that behavior.
on my old i9100, i never got that behavior, ondemand governor was perfect and i could reach 4 hours of screen on time.with the m8, i can barley pass it , going for 4-5 hours, because its draing too fast.
any suggestions?
*EDIT*
tried a factory reset, and i just installed xposed with cpufreq status bar module, and the device is still going nuts.WTF?

Can I ask... are you sure this is abnormal? I mean, are you seeing ill effects? Is the device laggy? Is your screen-off battery time awful?
All OS's do stuff in the background, and "idle" doesn't really mean anything at all to be honest -- even when you "don't have any apps running" there are apps running, and you'll always see the CPU cycle from idle to low speed to high speed if you're looking for it.

thebobmannh said:
Can I ask... are you sure this is abnormal? I mean, are you seeing ill effects? Is the device laggy? Is your screen-off battery time awful?
All OS's do stuff in the background, and "idle" doesn't really mean anything at all to be honest -- even when you "don't have any apps running" there are apps running, and you'll always see the CPU cycle from idle to low speed to high speed if you're looking for it.
Click to expand...
Click to collapse
i know there are background process and apps, and i don't except the device to stay at 300mhz all the time, but its quite annoying to hold on to a device and feel its temperature rising to insane levels without doing anything fancy with it.just texting.and every touch ramp the cpu to the max frequency, its weird.and unnecessary.
i don't know if its normal behavior, as i mentioned, my old i9100(galaxy s2) would not act like this. and i could get 4 hours of screen on time, and here, i get 4-5 hours max.it dose not seem logical.
I'm not using lte of nfc or BT.my reception is full(both wifi and cell).
i just want to know if this a normal behavior? anyone else having this heat buildup on light use?

I have a similar problem there on M8S. I killed half the background tasks, disabled syncing, auto backups, and then I open FBreader(or any other app) at 30% brightness and all the cpu cores go to 50 degrees C, heat up my battery to 43 degrees C. It results in loss of 40% of battery charge in just an hour. With screen off my device usually consumes 1-2% an hour. Whatever I do, I have never seen at least one core sleeping, they always work at 600-900MHz.