Super high Kernal usage... - Droid Ultra Q&A, Help & Troubleshooting

Just wondering if there might be a quick fix for this.
Seems like at the end of a cycle, my Kernal Usage is 30% higher than anything else. Screen and idle usually come in next. I usually get around 4-5 hours of screen time.
Wondering if there was something quick I could try to get that under control.
Thanks

redddog said:
Just wondering if there might be a quick fix for this.
Seems like at the end of a cycle, my Kernal Usage is 30% higher than anything else. Screen and idle usually come in next. I usually get around 4-5 hours of screen time.
Wondering if there was something quick I could try to get that under control.
Thanks
Click to expand...
Click to collapse
"kernel usage" is too vague. If you have root, use something like bettery battery stats to see what's giving to you partial wakelocks. You probably have a rogue app.

BladeRunner said:
"kernel usage" is too vague. If you have root, use something like bettery battery stats to see what's giving to you partial wakelocks. You probably have a rogue app.
Click to expand...
Click to collapse
No root. Any non-root ideas?

redddog said:
No root. Any non-root ideas?
Click to expand...
Click to collapse
wipe data and install apps one at a time and see which one is causing the issue, the dapa wipe itself might cure the issue too.

I've struggled with the same issue on my Mini--what wakelock is showing up? For me it was "suspend_backoff", which I only found what seems like a fix to today--I went into WiFi>Advanced>WiFi frequency band> and changed it from "Auto" to "2.4GHz only". Went from using around 20%/hour of my battery nearly idle to only around 8%/hour. Solid fix for me, although I'm not certain if it has messed up my voice input as a result. I'd love to hear if you can try out the same fix--let me know if it has any effects on your Touchless Control or Google keyboard voice input. Cheers!

Related

POSSIBLE FIX: Solution to high Android System usage on GB ROMS

THANKS TO MILH0U5E, From the Evo 4g forum - http://forum.xda-developers.com/showthread.php?t=1006809
Basically go to Menu > Settings > Privacy and turn off "Backup to Google".....
SUMMARY:
I've been enjoying the different aosp gingerbread roms from echoside, savage team, and evokings... they each run really well and stand apart from each other.
But one thing that I have been unable to shake is the high percentage of Android System running. Its always upwards of 60% or higher, unless the phone is in airplane mode.
I think I found the culprit in this issue... I turned off backing up to Google services, and wham! No more high Android System usage. It hasn't been a full day yet, but I usually notice it by mid morning.
Just thought I'd throw this out there for you GB fans.
Click to expand...
Click to collapse
I'll give it a shot when i get home... Anyone else try this?
jerdog said:
THANKS TO MILH0U5E, From the Evo 4g forum - http://forum.xda-developers.com/showthread.php?t=1006809
Basically go to Menu > Settings > Privacy and turn off "Backup to Google".....
SUMMARY:
Click to expand...
Click to collapse
diablokicks said:
I'll give it a shot when i get home... Anyone else try this?
Click to expand...
Click to collapse
I did it, will see if it changes anything today. I charge overnight, run on battery all day, and have my tablet set to never sleep. I see an idle drain of about 1-2% per hour with it not deep sleeping (wifi on, screen off) so it should be interesting to compare.
Reading the entire thread he linked to, I'm not sure this does much of anything... we'll see!
diablokicks said:
I'll give it a shot when i get home... Anyone else try this?
Click to expand...
Click to collapse
I am giving it a shot as of right now. It's gotta be easier on the battery with this disabled.
schettj said:
I did it, will see if it changes anything today. I charge overnight, run on battery all day, and have my tablet set to never sleep. I see an idle drain of about 1-2% per hour with it not deep sleeping (wifi on, screen off) so it should be interesting to compare.
Reading the entire thread he linked to, I'm not sure this does much of anything... we'll see!
Click to expand...
Click to collapse
So far, no appreciable change in standby power drain. Can't hurt, seems unnecessary, but unlikely to be a positive impact unless you happen to get stuck spinning on some backup process.

[Q] Battery drain and high Android OS usage?

Last week I got a Droid Ultra and am noticing my battery life is pretty bad. I'd heard the Ultras don't get great battery life to begin with but I think something else is going on with my setup. My Android OS usage is always by far the highest, dwarfing the screen percentage. This is my first smartphone so bear with me if this is normal or I'm doing something dumb. My usage seems to be pretty normal by these board's standards, 30min talk, 20-40 texts, wifi on, and couple hours of gaming. (slow week at work!) I have installed Watchdog and it is running on moderate, although I must admit I don't really know how to use it to its full capabilities. I have attached some screenshots below, any advice would be greatly appreciated.
I have a Mini with the same issue. Still haven't figured out what it is, even tried a factory reset. So you're not the only one.
jjlangen said:
I have a Mini with the same issue. Still haven't figured out what it is, even tried a factory reset. So you're not the only one.
Click to expand...
Click to collapse
MrPlinkett said:
Last week I got a Droid Ultra and am noticing my battery life is pretty bad. I'd heard the Ultras don't get great battery life to begin with but I think something else is going on with my setup. My Android OS usage is always by far the highest, dwarfing the screen percentage. This is my first smartphone so bear with me if this is normal or I'm doing something dumb. My usage seems to be pretty normal by these board's standards, 30min talk, 20-40 texts, wifi on, and couple hours of gaming. (slow week at work!) I have installed Watchdog and it is running on moderate, although I must admit I don't really know how to use it to its full capabilities. I have attached some screenshots below, any advice would be greatly appreciated.
Click to expand...
Click to collapse
Did you guys try disabling the bloatware and turn of Google location?if you're still on 4.2 you can use gsam battery monitor from play store. It gives detailed info on wakelocks and and what's keeping your CPU active.
Sent from my KitKat Ultra
Caseyk621 said:
Did you guys try disabling the bloatware and turn of Google location?if you're still on 4.2 you can use gsam battery monitor from play store. It gives detailed info on wakelocks and and what's keeping your CPU active.
Sent from my KitKat Ultra
Click to expand...
Click to collapse
I have tried to get rid of the bloatware but they don't seem to be removable. I can stop them but they just restart later. I have just turned off locations so we will see if that helps. Will the program you mentioned work with Kit Kat? I am using DU Battery Saver at the moment. Thanks for the advice.
MrPlinkett said:
I have tried to get rid of the bloatware but they don't seem to be removable. I can stop them but they just restart later. I have just turned off locations so we will see if that helps. Will the program you mentioned work with Kit Kat? I am using DU Battery Saver at the moment. Thanks for the advice.
Click to expand...
Click to collapse
Gsam Won't work on 4.4 unless you're rooted. So you can disable the bloatware easily. Go to app drawer long press on app you want to disable as if you were going to add it to the home screen. Drag it up and drop it on app info. You can disable it there. Some apostle it will ask if you want to revert back to stock. Select ok. Best part is you can't break anything this way! If you want to enable the apps go to settings....apps...and slide all the way over for list of disabled!
Sent from my KitKat Ultra
Bloatware has been gone for a while. I tried disabling location last night, but still have the same high OS usage today. Just installed GSam- on 4.4 but rooted- I'll post if it comes up with anything helpful.

[Q] What is this thing that is eating my battery? com.android.systemui

Rooted -- Calkulin's Stock "Battery Saver" ROM -- Xposed Framework -- a few mods from XBlast Tools running.
First off, a Root Explorer search for com.android.systemui returned nothing.
What is com.android.systemui? I don't think I saw this in my usage until a couple of days ago.
Why does 31 seconds of CPU and 1 second of keep awake = almost TRIPLE the battery use of 12 minutes of screen-on time?????
moseso said:
Rooted -- Calkulin's Stock "Battery Saver" ROM -- Xposed Framework -- a few mods from XBlast Tools running.
First off, a Root Explorer search for com.android.systemui returned nothing.
What is com.android.systemui? I don't think I saw this in my usage until a couple of days ago.
Why does 31 seconds of CPU and 1 second of keep awake = almost TRIPLE the battery use of 12 minutes of screen-on time?????
Click to expand...
Click to collapse
It's the actual System User Interface. So most likely a combination of the rom and xposed are causing this. Also, dirty flashes of ROMs can cause this.
If you installed a new xposed module and noticed a battery drain the uninstall that module. Otherwise remove other xposed modules. You could always try a frew full wipe in recovery as well.
I have had this issue with mostly with dirty flashing which is my queue to do a clean flash. It's also possible if you restored any apps with data, like from Titanium Backup, could potentially cause this as well.
moseso said:
Rooted -- Calkulin's Stock "Battery Saver" ROM
Click to expand...
Click to collapse
you got caught up in a lie, with buzzwords that are pushing for you to use the rom. theres no such thing as a battery saving rom. all those scripts/mods being used in the rom are just buzzwords. battery life is all dependent on how you personally use your device, how you set up your device, and your data/phone signal quality. a rom will not save you battery.
Thanks for the help, Tom. A visit to recovery to wipe caches and fix permissions and a reboot caused this -->
simms -- I do understand that. I am not really disappointed in my battery life -- and it doesn't seem to have changed much in the week that I've had the phone. But the reporting of it had, and that sort of alarmed me...
moseso said:
Thanks for the help, Tom. A visit to recovery to wipe caches and fix permissions and a reboot caused this -->
simms -- I do understand that. I am not really disappointed in my battery life -- and it doesn't seem to have changed much in the week that I've had the phone. But the reporting of it had, and that sort of alarmed me...
Click to expand...
Click to collapse
wow, your android system is high, even though only 10% battery was used. a reboot might fix that though. you might have to go through your settings and setup again, disable stuff like google location reporting/history(it wont disable your location).
simms22 said:
wow, your android system is high, even though only 10% battery was used. a reboot might fix that though. you might have to go through your settings and setup again, disable stuff like google location reporting/history(it wont disable your location).
Click to expand...
Click to collapse
I'm beginning to think the issue I'm having is in the reporting -- not actually a battery use problem. I've only had the phone a week, so my data base is small, but I haven't really seen bad battery life nor any real change in it. Even with some use and a bunch of time fiddling with the mods and stuff, I've yet to go to bed with less than 50% left. Mostly, more...
Here's the latest pics. com.android.systemui is back on top in the overview with 36% The detail page shows 39% and a whole 2 seconds of CPU. That just CAN'T be right...
moseso said:
I'm beginning to think the issue I'm having is in the reporting -- not actually a battery use problem. I've only had the phone a week, so my data base is small, but I haven't really seen bad battery life nor any real change in it. Even with some use and a bunch of time fiddling with the mods and stuff, I've yet to go to bed with less than 50% left. Mostly, more...
Here's the latest pics. com.android.systemui is back on top in the overview with 36% The detail page shows 39% and a whole 2 seconds of CPU. That just CAN'T be right...
Click to expand...
Click to collapse
Can u show the battery graph? And also why is your bluetooth on every time.
varuntis1993 said:
Can u show the battery graph? And also why is your bluetooth on every time.
Click to expand...
Click to collapse
Which battery graph? You mean the current usage graph I showed in the OP, from Battery Monitor Widget?
Re Bluetooth: I just leave it on, so when I step in the car it just connects to the car. No muss, no fuss, no bother.
I suppose I could try turning it off and see how much battery I save. I know with my previous phone (EVO4G) the point at which I started leaving the bluetooth on all the time didn't change my battery life to any noticeable extent.
Here's battery monitor widget current use. The EVO idled at 70 - 95 ma. This one does seem to draw a lot more at idle. I don't know what's "normal."
moseso said:
Which battery graph? You mean the current usage graph I showed in the OP, from Battery Monitor Widget?
Re Bluetooth: I just leave it on, so when I step in the car it just connects to the car. No muss, no fuss, no bother.
I suppose I could try turning it off and see how much battery I save. I know with my previous phone (EVO4G) the point at which I started leaving the bluetooth on all the time didn't change my battery life to any noticeable extent.
Here's battery monitor widget current use. The EVO idled at 70 - 95 ma. This one does seem to draw a lot more at idle. I don't know what's "normal."
Click to expand...
Click to collapse
Stock battery app like this
varuntis1993 said:
Stock battery app like this
Click to expand...
Click to collapse
Not very interesting. It keeps resetting, every time I plug in to USB to transfer the screenshots to my mac for posting here. I'm not leaving it plugged in very long -- I just move the pics and unplug it. I unplugged it this morning at 7:30 AM. It's now almost seven hours later and I'm at 93%. That ain't bad. It's a gradual descent -- no big drops like the one in your post.
moseso said:
Not very interesting. It keeps resetting, every time I plug in to USB to transfer the screenshots to my mac for posting here. I'm not leaving it plugged in very long -- I just move the pics and unplug it. I unplugged it this morning at 7:30 AM. It's now almost seven hours later and I'm at 93%. That ain't bad. It's a gradual descent -- no big drops like the one in your post.
Click to expand...
Click to collapse
Mine stats those are from my nexus 7 2013, Sot of around 4 and still 55% battery left.
I just showed u for sample. A simple restart should fix as simms told
I m on stock rom with x blast tool never happened with me....u can try to use ur phone in safe mode and see...I know its a system app but u can give a try with bluetooth off. Or flash a diff rom and see
If your phone is vibrating a lot and you have extra UI elements installed this seems normal.
When you only use a small percentage of the full battery smaller drains appear large.
Bit off topic, but have you thought of using WiFi to move your files over? No messing with the wire and you could even automate the task.
Sent from my Nexus 5 using Tapatalk
bblzd said:
Bit off topic, but have you thought of using WiFi to move your files over? No messing with the wire and you could even automate the task.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Thanks for the push. Found a nifty WiFi file transfer app this morning. Boy, is that slick!

CPU churning?

Every now and then my rooted Nexus 5 running stock 4.4.2 gets very slow and a CPU monitor shows the CPU going at full steam. A reboot returns things to normal.
Without knowing my way around android I'm trying to figure out what causes that. According to one of the screenshots below, daemonsu10125 seems to be one of the culprits, or Androidos itself.
Can someone suggest possible causes or ways to find out what the problem is - unless that is a known android bug. I'm attaching some screenshots taken at various times in my attempted searching. Perhaps an expert would make more sense of them than me.
are you rooted? this looks like SU acting up, maybe use another Superuser app if you are rooted. If not, I'd say get rid of this e-mail client you are running.
EDIT. Use Wakelock detector from the app store to better see what is keeping your CPU so busy.
Thank you. I'll look for wakelock
Anderson2 said:
Every now and then my rooted Nexus 5 running stock 4.4.2 gets very slow and a CPU monitor shows the CPU going at full steam. A reboot returns things to normal.
Without knowing my way around android I'm trying to figure out what causes that. According to one of the screenshots below, daemonsu10125 seems to be one of the culprits, or Androidos itself.
Can someone suggest possible causes or ways to find out what the problem is - unless that is a known android bug. I'm attaching some screenshots taken at various times in my attempted searching. Perhaps an expert would make more sense of them than me.
Click to expand...
Click to collapse
Also, do you know that stock kernel has Touch Boost enabled?
So whenever you touch screen, your CPU goes high speed to give you max performance (project butter.)
Touch boost would be fine. But I'm talking about all four cores running near maximum so the phone runs like molasses till I reboot. That can't be by design. Can it?
Anderson2 said:
Touch boost would be fine. But I'm talking about all four cores running near maximum so the phone runs like molasses till I reboot. That can't be by design. Can it?
Click to expand...
Click to collapse
Nah. Get rid of the email app and go from there. Also get BBS as instructed, and please post the log here.
CPU-Z
No that is not right i have an app called CPU-Z and it moniters your phone including cpu usage and 2 of my cores are not used as they are not needed they would only activate if needed so no way should yours be running full blast
Aerowinder said:
Nah. Get rid of the email app and go from there. Also get BBS as instructed, and please post the log here.
Click to expand...
Click to collapse
Why the email app?
What is BBS?
Anderson2 said:
Why the email app?
What is BBS?
Click to expand...
Click to collapse
Because that's what draining the battery.. 31% usage?? It's normal if you have used your mobile only for mails all the time.. If not, there's something wrong with the app!
BBS means BetterBatteryStats: http://forum.xda-developers.com/showthread.php?t=1179809
vin4yak said:
Because that's what draining the battery.. 31% usage?? It's normal if you have used your mobile only for mails all the time.. If not, there's something wrong with the app!
BBS means BetterBatteryStats: http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
The email battery usage was a one time thing. Not sure what I was doing at the time. Here's a recent screenshot. It varies. Most of the time screen is the main battery user. Other times it is "Android os", which is weird.
Anderson2 said:
The email battery usage was a one time thing. Not sure what I was doing at the time. Here's a recent screenshot. It varies. Most of the time screen is the main battery user. Other times it is "Android os", which is weird.
Click to expand...
Click to collapse
Android OS depends on how you've set up your device... Anyways, 5% battery drain in 8 hours seems pretty good.. Not sure what's the problem here??
When you think there's a problem with excessive battery drain, use BBS or wakelock detector too see what's preventing your device from sleeping.. Screen shot of stock battery usage doesn't help.
Battery usage is pretty good. That was not my problem. My problem was that suddenly, at times, the phone would suddenly become very slow, almost unusable. It only happens intermittently and a reboot fixes it.
In trying to figure out why the slow downs happen I identified that they correlated with times when all 4 cores are running full blast. That is what I was trying to identify. Why at times the CPU is churning so much that the phone slows down. The battery charge duration is not my issue.

Battery Drain (Pixel 4a Global)

I reformatted to factory settings, and even reinstalled all factory images. I still get a lot of battery drain daily. the battery details screenshot indicates that Google is always on and Suspend Wakelock is always on. what can I do to fix this issue? I am unable to keep this phone otherwise. I always have battery drain issues on Android yet seems as though Google has not provided a stable fix...
I cant get even one hour of screentime on Android until it hits 80%.
I just need to know how to fix the Wakelock issue because I think that's what it is. I tried Wakelock apps but they don't do anything.
EDIT: resolved. just reflashed using Android Flash Tool and that corrected it.
aohus said:
I reformatted to factory settings, and even reinstalled all factory images. I still get a lot of battery drain daily. the battery details screenshot indicates that Google is always on and Suspend Wakelock is always on. what can I do to fix this issue? I am unable to keep this phone otherwise. I always have battery drain issues on Android yet seems as though Google has not provided a stable fix...
I cant get even one hour of screentime on Android until it hits 80%.
I just need to know how to fix the Wakelock issue because I think that's what it is. I tried Wakelock apps but they don't do anything.
Click to expand...
Click to collapse
use bbs to get more detail of usage. Otherwise nobody could help you.
aohus said:
I reformatted to factory settings, and even reinstalled all factory images. I still get a lot of battery drain daily. the battery details screenshot indicates that Google is always on and Suspend Wakelock is always on. what can I do to fix this issue? I am unable to keep this phone otherwise. I always have battery drain issues on Android yet seems as though Google has not provided a stable fix...
I cant get even one hour of screentime on Android until it hits 80%.
I just need to know how to fix the Wakelock issue because I think that's what it is. I tried Wakelock apps but they don't do anything.
Click to expand...
Click to collapse
Oy Vey. Battery life (power consumption) is outstanding on this device right out of the box. No rogue wakelocks here. Misbehaving apps and panel brightness are the two biggest drainers. Adjust your life and so called "SOT" will improve. Note the battery is 'only' ~3140 mAh. Don't expect all day longevity if gaming or in constant use. That's not what this phone is about.
I was able to resolve the issue by reflashing. I had used BBS hence why the suspendlockout at 100%.
Steps to resolve. (aware that this may not be the most ideal option for some)
- Reflash using the Android Flash Tool (don't manually update, just use the flash tool provided by Google)
- Start from scratch. Do not restore from backup. Install most needed apps.
- Observe battery drain over the course of the day
The issue was that Google app (not sure which app that is) did not run in background properly hence the high drain.
I was able to get 6 hours of SOT once I reflashed. Here is to hoping 7 hours of SOT with a modified kernel.
aohus said:
I was able to resolve the issue by reflashing. I had used BBS hence why the suspendlockout at 100%.
Steps to resolve. (aware that this may not be the most ideal option for some)
- Reflash using the Android Flash Tool (don't manually update, just use the flash tool provided by Google)
- Start from scratch. Do not restore from backup. Install most needed apps.
- Observe battery drain over the course of the day
The issue was that Google app (not sure which app that is) did not run in background properly hence the high drain.
I was able to get 6 hours of SOT once I reflashed. Here is to hoping 7 hours of SOT with a modified kernel.
Click to expand...
Click to collapse
Kernel appears well optimized on this device; doubt you will see significant power utilization improvements with custom varients. More likely to score headaches w/o a corresponding benefit.
I'm on my second cycle. Got close to 9 hrs sot on first. Here's my 2nd after useing it for an hour this morning. Even better than my OP5T! I use wifi almost all the time since I don't get any cell bars at home.
tcat007 said:
I'm on my second cycle. Got close to 9 hrs sot on first. Here's my 2nd after useing it for an hour this morning. Even better than my OP5T! I use wifi almost all the time since I don't get any cell bars at home.
Click to expand...
Click to collapse
I'm getting low numbers like op, 4-5 sot but I'm only on cell data (no wifi in this apartment for now). Could wifi vs cell account for such a big difference? Thanks!
suda space said:
I'm getting low numbers like op, 4-5 sot but I'm only on cell data (no wifi in this apartment for now). Could wifi vs cell account for such a big difference? Thanks!
Click to expand...
Click to collapse
Yep - especially if signal is weak/marginal forcing the mobile radio to maintain a higher power level. Same thing can happen on WiFi although have more options to cycle WiFi on/off during screen off operations. In contrast, mobile radio is on 7x24 unless you tell it otherwise.
DB126 said:
Yep - especially if signal is weak/marginal forcing the mobile radio to maintain a higher power level. Same thing can happen on WiFi although have more options to cycle WiFi on/off during screen off operations. In contrast, mobile radio is on 7x24 unless you tell it otherwise.
Click to expand...
Click to collapse
Ok thanks. I’ll test it out soon on wifi and see what happens.
I saw that the Pixel 5 is about the same form size as the 4a but with the larger battery. Out of curiosity, anyone know if it’s possible to jam that 4,000mah battery inside the 4a? I haven’t seen the internals so don’t know if there’s enough room.
keaheng said:
use bbs to get more detail of usage. Otherwise nobody could help you.
Click to expand...
Click to collapse
May I know what bbs is ?
[email protected] said:
May I know what bbs is ?
Click to expand...
Click to collapse
It's the app "BetterBatteryStats"
[APP][2.2+][11 Dec. 2022 - V3.1] BetterBatteryStats
I started BetterBatteryStats because I was missing the great battery history that Spare Parts allowed to call on Froyo. It has been a long journey since the first version. BetterBatteryStats provides an insight in following categories: - General...
forum.xda-developers.com
BetterBatteryStats – Apps bei Google Play
Ein hoher Batterieverbrauch ist ein limitierender Faktor für eine positive Nutzererfahrung.
play.google.com
Can be very helpful to find the app/service which effects the battery drain.

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