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So I am reading the tips and tricks article - GREAT article by the way! - and I come upon the note stating to not use task killer (shown below in bold).
SHOULD I USE A TASK KILLER?
Absolutely not. You have the best OS and one of the best spec'd phones ever. You would be doing more harm than good. If you do have one, uninstall, reboot and let me know what you think!
In addition, even Google at Google I/O 2010 addressed app developers and asked them to no longer include "quit" or "close" as options within their apps. I think Andronica (another great android site) summed it up well with their article, found here.
XDA user iunlock created a thread with some good debate based off this sticky. You can read all the thoughts by clicking here. In short, the overwhelming majority agreed and some have commented on seeing an increase in performance after deleting their task killers. Awesome job guys.
That having been said, I went a day. Sure, it ran smooth, but my battery life stunk.
I'd like to hear from other users on the pros/cons of using a task manager on your Vibrant. Not trying to start a flame war, just wanting to hear thoughts other than my own (and the little voices that come from the ear piece of the phone )
Personally I am completely for it, as long as you are not killing off critical processes or apps that you use on a regular basis. Bottom line here - know what you're doing.
Feedback please?
I had the exact opposite reaction after getting rid of the task manager, battery life increased.
I kept ATK, battery life improved with it. If i play games and then hit the Home button which i always do. it stays running in background and kills the battery. Didnt really notice much of an impact with performance but my battery life increased
I use task manager. people can say what they want, but lowmemorykiller is designed to kill apps when the system needs memory. our phones have a lot of memory so they are capable of keeping so many apps open, if no one believes me download a task killer and just open it up to see how many apps are really running on your phone, its ridiculous, especially if you still have the bloatware. I don't necessarily use it because my phone bogs down from so many apps (that reason was back in the day with my g1) i do it because theoretically your battery life should go up. What's worse, a task killer running, or the last 20 apps you've used? All I know is my phone runs fine, smooth, and has battery life that I really cant complain about. It's hard to really tell what is correct though, I mean theres's hundreds of posts about the gps on our phone and mine launches up, finds my exact location within 30 seconds, and navigates perfectly. Got mine the day it came out, so ive really never worried about what other people have said, i just find out for myself. try both and see what you observe to be best.
I own(ed) a G1, Google Ion, myTouch, CLIQ, Behold II, Nexus One, myTouch Slide, GARMINfone, and Samsung Vibrant.
I have never used a task killer / manager on any of them and have never experienced lag on any of them.
My battery has also lasted from wake (9am) to bed (im usually in the bed by 11pm, sleep comes much later) on all of them and that includes at least 2 hours of stereo Bluetooth music. WiFi, GPS and Sync on all day. Bluetooth and brightness are managed as needed.
I'm no developer, but I have flashed my fair share of roms, and run plenty of tests. I don't know what is best, but I do know that they are NOT NECESSARY. Are they helpful or useful to you? Possibly. If you want to use one, have fun. I see no reason for me to start now...
EDIT: I also play a fair bit of SNESoid, GENSoid, and now PSX4droid....
Also, I don't have a car charger or office charger. I only charge overnight.
If you have to use a charger during the day, you blew it.
Task Mangers slow my phone down more. I don't use them.
joe.kerwin said:
I use task manager. people can say what they want, but lowmemorykiller is designed to kill apps when the system needs memory. our phones have a lot of memory so they are capable of keeping so many apps open, if no one believes me download a task killer and just open it up to see how many apps are really running on your phone, its ridiculous, especially if you still have the bloatware. I don't necessarily use it because my phone bogs down from so many apps (that reason was back in the day with my g1) i do it because theoretically your battery life should go up. What's worse, a task killer running, or the last 20 apps you've used? All I know is my phone runs fine, smooth, and has battery life that I really cant complain about. It's hard to really tell what is correct though, I mean theres's hundreds of posts about the gps on our phone and mine launches up, finds my exact location within 30 seconds, and navigates perfectly. Got mine the day it came out, so ive really never worried about what other people have said, i just find out for myself. try both and see what you observe to be best.
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Click to collapse
Android has a task killer built in to kill apps if memory is low automatically.
Couldnt enjoy my phone without one.
laristech said:
Task Mangers slow my phone down more. I don't use them.
Android has a task killer built in to kill apps if memory is low automatically.
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Click to collapse
I know, read. I referenced that in the first line. It's a low memory killer, my phone still has 100mb of memory available even with 15-20 apps open. I'd rather have those tasks not running if i've finished with them. Plus apps also reopen periodically by themselves, auto-kill on a 3rd party task killer will kill this as soon as the phone is sleeping, the build in task killer will not.
AndroidZ28 said:
I own(ed) a G1, Google Ion, myTouch, CLIQ, Behold II, Nexus One, myTouch Slide, GARMINfone, and Samsung Vibrant.
I have never used a task killer / manager on any of them and have never experienced lag on any of them.
My battery has also lasted from wake (9am) to bed (im usually in the bed by 11pm, sleep comes much later) on all of them and that includes at least 2 hours of stereo Bluetooth music. WiFi, GPS and Sync on all day. Bluetooth and brightness are managed as needed.
I'm no developer, but I have flashed my fair share of roms, and run plenty of tests. I don't know what is best, but I do know that they are NOT NECESSARY. Are they helpful or useful to you? Possibly. If you want to use one, have fun. I see no reason for me to start now...
EDIT: I also play a fair bit of SNESoid, GENSoid, and now PSX4droid....
Also, I don't have a car charger or office charger. I only charge overnight.
If you have to use a charger during the day, you blew it.
Click to expand...
Click to collapse
There's no way your g1 ever lasted 14 hours, let alone consistently with that usage. Either that or you dont understand how some of us use our phones. The only reason this must be such a debated topic is because there truly isn't much of a difference. Will your phone have a weeks worth of battery life with one? No. Without one? No. Users preference I suppose, but before i deleted bloatware, my telenav and slacker radio were always open and i honestly never even opened them to even check them out.
That having been said, I went a day. Sure, it ran smooth, but my battery life stunk.
I'd like to hear from other users on the pros/cons of using a task manager on your Vibrant. Not trying to start a flame war, just wanting to hear thoughts other than my own (and the little voices that come from the ear piece of the phone )
Personally I am completely for it, as long as you are not killing off critical processes or apps that you use on a regular basis. Bottom line here - know what you're doing.
Feedback please?
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Click to collapse
People will give all sorts of anecdotal evidence one way or another about this topic. Just keep in mind that anecdotal evidence won't answer the question. It's not a simple yes/no question either.
Here's the deal. *IF* you have errant tasks that are causing partial wake issues (running too much or too often when the phone is supposedly asleep), those applications will be the culprit for your bad battery life.
These are not likely to be core tasks of the OS, or OS bundled bloatware either...but they can be. When I had my Behold II and was running ADW.Launcher, for instance, I had to use a task manager to keep parts of Touchwiz from waking up and complaining about the UI not being front-and-center. And the reason WHY I used a task manager was a simple one. It was a core data task of the embedded software that could not be REMOVED.
The best solution to partial wake issues is to identify the tasks that are causing them, and GET RID OF THAT APP. In my very specific case above I was unable to do so, so a task killer had value.
The reason why task managers can be a very bad idea are legion. The Android OS runs a lot of interdependant tasks, and killing one seemingly innocuous task can and often will start a domino effect with other tasks that rely on them. It can even cause other dependant apps to eat 100% of cpu time during sleep cycles or at other times, and make your battery life mysteriously go to hell.
So far on this Vibrant, I've found no core tasks causing partial wake issues. Third party apps and widgets however, I've found quite a few that "wake up" and cause partial wake issues (i.e. they are spending too much time working and running when the phone is in "sleep" mode). Pure Messenger Widget being one of the nastiest I've tried lately.
What do I recommend? Use the built in battery statistics, and install the market app "Spare Parts". This combination will give you the ability to glean useful information about exactly what is running and what it's doing. There are other tools and whitelist managers that you could employ as well, but this is enough for me.
And even if you are running task managers and killers, you should be using the above to know whether what you are doing is a complete waste of time or even making matters worse.
When left to its own devices, Android 2.1 does a remarkably good job managing tasks and memory, PROVIDING THAT 3RD PARTY APPS ARE BEHAVING. Since we all run a very different set of 3rd party applications and widgets, it's no wonder that people are having battery life issues (great, bad, not so bad, etc..) all over the map.
I use Advanced Task Manager Pro and I love it. The close-all widget is great because it closes everything except what you have told it not to kill, and it kills itself to that is not running down your battery either.
joe.kerwin said:
There's no way your g1 ever lasted 14 hours, let alone consistently with that usage. Either that or you dont understand how some of us use our phones. The only reason this must be such a debated topic is because there truly isn't much of a difference. Will your phone have a weeks worth of battery life with one? No. Without one? No. Users preference I suppose, but before i deleted bloatware, my telenav and slacker radio were always open and i honestly never even opened them to even check them out.
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Click to collapse
I don't know what to tell you other than it did.
I am a pretty heavy user, but I do have fantastic coverage and work in a bright environment so brightness stays down. SetCPU works wonders.
I tested my Vibrant today. Came off the charger at 5:30am. It's now 10pm & my phone is freaking out for juice. I think my G1 could match this.
I'm constantly pulling from Gmail & Exchange (usually on Edge - poor reception in the office). I used GPS for about 10 min on the way home. Once home I started wifi. I turned it off an hour ago to play a few rounds of Let's Golf.
That's not terrible for such a badass smart phone, I think.
-bZj
_____
-sent from my Samsung Vibrant via XDAapp
I personally will only have a task manager installed for when I'm working on my game / app projects, as to make sure they properly close when exited or to kill them if something goes wrong (neverending looping media), so I don't have to reboot the phone.
I was using atk before my last factory reset. I've decided against it now though. I've also decided not to use any more web apps when I have a perfectly good browser. Just seems like a waste of resources to me and my phone is much quicker without them. That and launcher pro have made this feel like a different phone. I think the combination makes atk unnecessary.
If I decide to keep this phone I'll reroot and clean out all the crapware. I'd prefer to keep this phone well-maintained like my computer sip that a task killer would be mostly unnecessary.
Anyone used this app? I tried it and it boosted my memory from 123 mb to 180 mb.
i know "if you have free memory you're wasting it". but in my opinion this combined with advanced task killer will improve battery life a lot.
its on android market, just type memory booster
Lol I experimented with these kind of apps, my opinion is that they are pretty much pointless.
I simply tell things not to auto update and removed unused junk.
Did the trick for me.
Swyped from my rooted X10i using Tapatalk.
I'll bite. How will having more free memory improve battery life?
You don't need third party apps. You have to determine which app is eating your battery life. The only thing memory booster is doing is disrupting Android's memory management processes.
Sent from my SAMSUNG-SGH-I897 using XDA App
if it could activate the full ram potential of the handset then it would be worth while but i dont see the point in the extra mem for app's.
Like I said I simply stop stuff auto updating and therefore save battery life as no apps are active, merely sitting in ram.
Swyped from my rooted X10i using Tapatalk.
I only kill programs when I want my phone in standby because I know I won't be using it. Or with programs that can still run in the background and stay active when they shouldn't.
Other than that, don't be a frequent task killer. It's not an iPhone, it's an Android phone. As much as I loathe my Xperia X10 it's far better than an iTurd.
bongd said:
I only kill programs when I want my phone in standby because I know I won't be using it. Or with programs that can still run in the background and stay active when they shouldn't.
Other than that, don't be a frequent task killer. It's not an iPhone, it's an Android phone. As much as I loathe my Xperia X10 it's far better than an iTurd.
Click to expand...
Click to collapse
Way to try to prove your cool by trying to inject irrelevant crap into the discussion. Especially ****e you obviously know sweet fa about. You do realize that when you get down to the nuts and bolts the memory management is almost identical in iOS and Android? Only difference is how it's exposed to apps. My gf has my iPhone 4 now, trust me, calling it an iTurd just makes you look a bit special - and not in a good way either.
P.S. task killers made sense on phones like mt3g that were memory limited, when you went to launch a big app like gallery it popped up straight away if there was free ram - when memory was all spoken for, the system would have to kill a bunch a tasks, so it'd hang for a while before launching your app. Can't say I noticed the need for that on my X10.
rynoon said:
I'll bite. How will having more free memory improve battery life?
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Click to collapse
It isn't the free memory that saves battery. It's the applications being "killed" that otherwise would need some battery power as they lie in the background doing things. Even sleeping applications have some "attention" from the kernel and that will drain (slightly) on the battery too. Every drip-drop counts.
SysGhost said:
It isn't the free memory that saves battery. It's the applications being "killed" that otherwise would need some battery power as they lie in the background doing things. Even sleeping applications have some "attention" from the kernel and that will drain (slightly) on the battery too. Every drip-drop counts.
Click to expand...
Click to collapse
And every time you want to use an app, will have to be reloaded in memory wasting more power for that task.
Anyhow, do it your way ...
The rest of the world is just stupid.
This constant debate of whether app management apps work or not is really irrelevant. Some work, some don't. Just try and find that out.
Once I listened to posters here and decided not to use ATK because of the reasoning that Android is efficient by itself. Wrong. My battery kept draining fast. Once I started using ATK and modifying the program here and there, my battery's energy consumption actually slowed down and I can go through a whole day without charging. My settings? Put ATK on safe mode and auto kill every half hour, and ignore SE's own backup app (for some reason, killing SE backup caused a disruption with the data/signal for a second).
So for everyone, just try and see whatever is recommended works.
Exactly my point. I used to use atk with similar settings to yourself and experienced greater battery drain.
I get better results with my method.
We all use our phones in different ways so it follows we would experience differing results.
Swyped from my rooted X10i using Tapatalk.
I'm trying to figure out how some people drain the batteries so fast. I have my phone set up as a wifi accesspoint, I'm using bluetooth, autosyncing my gmail and calendar but still I get more than a full day use out of it. If I listen to music over a bluetooth headset constantly I can't last a day but the juice in my headset tends to run out faster.
I can't for the life of me figure out what people do. I'm not using any task killers or what have you but still get between 18 and 24 hours of heavy usage.
I was using a task killer before reading on here about how they are useless and whatnot. But I find my phone freezes up more now that I am not using it. The battery seems to be around the same. All I do is text and use facebook and it seems to freeze up when texting or typing half the time. I am kind of wondering if it's because I text so quickly..
Just to clear things up a bit:
Many applications out there are bad.
Applications that are some real heavy battery hogs, even when prefetched in the background.
Those bad applications keeps downloading adverts now and then, executing instructions while in the background, and so on. Those applications doesn't have any sleep/standby routines , or the routines are empty.
Some applications are so badly written, they're running at "full speed" no matter what. Those extremely bad applications keeps the CPU at full speed even when in standby mode.
A good sign of this is when the phone gets hot, even when not used. It's the CPU that heats up the device.
The programmers of these bad applications have no whatsoever experience with Androids "sleep and standby" functions and therefor left them empty or half-done.
This is why killing applications helps for some, and not for others.
It all depends if one got one or more "bad" applications installed.
And Android aren't too smart either. It'll just prefetch, to what it seems, a random bunch of applications.
For me Android prefetch apps I rarely use, and skips the applications I use everyday. Weird?
If one would keep the device clean and keep those bad applications out, (of which noone can tell if it's a bad app or not. There's nothing visibly wrong about them) one wouldn't need a separate task-killer. Or if EVERY single application out there where perfectly written, accordingly to the Android model.
Like I honestly don't understand it. They are obviously doing something wrong. I am running NAND with the SD card for applications (Stock 16GB) with gauner1986's HD-FI 0.3 with 2.15.50.14 and I have only 2-5ma battery drain on standby. But here's what I noticed:
Certain applications from Market increases battery drainage. If you install an app, begin to experience high battery drain, uninstall it.
It's a 3G phone for godsakes. Why disable the speed of it by going 2G?
Disable WiFi/Bluetooth/GPS when not needed.
Don't disable AutoSync or Background Sync. I've noticed no increase with both of them except when it pushes email, updates
Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
Don't disable APN either. This isn't your dumbphone, it's meant to have internet. Internet won't drain your battery life if it isn't active.
SetCPU is pointless. I don't even touch it as the risk to damage your phone using it is great. There has been no solid evidence this helps your battery life other then to SLOW down your phone.
Don't use a TaskKiller - Common sense, it eats battery. Android is programmed to kill apps.
On standby, it can last for freaking days even under light/medium usage. Constant heavy usage will make you last at-least a day.
Seriously. If you get drain, you have the wrong radio or application. I even tried uninstalling stock applications like Calender and removing widgets and they had no effect on my system. If you have to disable MAIN smartphone features, you might as well go back to:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I agree with most of what you say here but not this
Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
Click to expand...
Click to collapse
Personally i think your better off keeping the brightness as low as possible as i did experience battery drain when i had it up to 100%.
I have a taskkiller and I don't notice any difference at all. Having the brightness to 100 does drain your battery that's just common sense.
have no probs with batt drain, i dont use appkillers, brightness on about 45%, play music most of the day, internet on all day with updates, txt and call daily, still on 75% now, not a problem
FirefighterDown said:
[*]Certain applications from Market increases battery drainage. If you install an app, begin to experience high battery drain, uninstall it.
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Click to collapse
True.
[*]It's a 3G phone for godsakes. Why disable the speed of it by going 2G?
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Click to collapse
Because it really is a battery consumer. Actually, surfing on 3G is more power consuming than on WiFi, and Edge is fast enough for a fair amount of uses. Having a 2G/3G toggle widget is probably best, indeed no need to dumb down your phone too much.
[*]Disable WiFi/Bluetooth/GPS when not needed.
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WiFi & BT are obviously true, GPS is bullocks. As long as there's no GPS app running (i.e. there's no GPS icon in the status bar), your GPS is not active and is drawing zero current. It's just a setting.
[*]Don't disable AutoSync or Background Sync. I've noticed no increase with both of them except when it pushes email, updates
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Click to collapse
For some people, with certain apps behaving in a certain way (for example business people getting emails every minute), this can really be a serious battery hug. Again no need to dumb down your phone too much, but it if you really need to squeeze out those extra hours of juice this is a valid option.
[*]Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
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Click to collapse
That's plain rubbish. More brightness = more emitted light = more emitted energy. Read a physics book someday, this really makes no sense. Display is one of the biggest battery hogs, especially when actively using your phone. Leaving it on a low brightness level sure helps heaps.
[*]Don't disable APN either. This isn't your dumbphone, it's meant to have internet. Internet won't drain your battery life if it isn't active.
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Click to collapse
First part is true, enjoy the features your phone has. It does drain your battery though, even when inactive. There's no such thing as a free meal. Disabling mobile data won't double your battery life, but is a very valid option when you really need your phone to last just that little bit longer.
[*]SetCPU is pointless. I don't even touch it as the risk to damage your phone using it is great. There has been no solid evidence this helps your battery life other then to SLOW down your phone.
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Click to collapse
Bullocks again. First of all, underclocking cannot damage your phone in any way. Obviously no scientist has done research (actually, someone probably has but I don't feel like googling any right now) to provide solid evidence on the matter of cpu clocking affecting battery life, but any tech-guy with some experience will disagree with you. No need to clock down your CPU to 245Mhz obviously, but a 900Mhz clock speed will still more than suffice for most users. Again this won't significantly boost battery performance, but all the small bits help.
[*]Don't use a TaskKiller - Common sense, it eats battery. Android is programmed to kill apps.
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Probably the most valuable information in this thread - spot on!
Constant heavy usage will make you last at-least a day.
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Define heavy usage. How about playing Angry Birds at 100% brightness, while listening to Pandora with your Bluetooth headset/headphones, through a 3G connection obviously. Not a very far-fetched setup eh!
I'll buy you a cookie if you last more than, say, 6 hours. You probably won't last 4 hours either but I really don't feel like buying you a cookie.
FirefighterDown said:
Constant heavy usage (without playing games or watching movies) will make you last at-least a day.
[/IMG]
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fixed
ten char
FirefighterDown said:
[*]Keep the brightness UP to 100 percent. I saw no difference upon lowering it]
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Click to collapse
As other posters have said that is nonsense mate. You can easily see with current widget that the consumption is higher with higher brightness.
Bluetooth battery drain is the only issue
Coming from Windows 6.5 -as we all do- we all discuss the battery drainage.
All reasons for battery drainage given in this thread are true (bright screen sucks battery, 3G does etc etc.).
BUT WHY DOES THIS HD2 on ANDROID SUCK MORE BATTERY THAN THE SAME HD2 ON WINMO?
The bluetooth drivers obviously are not the right ones. On Winmo there was no significantly higher battery drainage with bluetooth on than with bluetooth off.
In all Android Roms that I have tried (and I tried them all), bluetooth empties the battery with about 60mA.
Who knows a rom that does not have this bluetooth problem?
jonny68 said:
I agree with most of what you say here but not this
Personally i think your better off keeping the brightness as low as possible as i did experience battery drain when i had it up to 100%.
Click to expand...
Click to collapse
I work outside in direct sunlight, where low settings makes it not viewable. I have it to max and even at home at 40 percent, I see no changes. Probably because of my usage pattern.
Sent from my HTC HD2 using XDA App
hello00 said:
I have a taskkiller and I don't notice any difference at all. Having the brightness to 100 does drain your battery that's just common sense.
Click to expand...
Click to collapse
Taskkillers have been proven to drain your battery. Google themselves have said it and admitted it in complex details. There's a thread on it that Ill pull up later at home. Like I said I see no differences in my battery report.
Sent from my HTC HD2 using XDA App
StephanV said:
You probably won't last 4 hours either but I really don't feel like buying you a cookie.
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Sorry for this post.... but this made me laugh hard.....
StephanV said:
Probably the most valuable information in this thread - spot on!
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So why when I run a task killer I get over a dozen apps running in list and when I close them my free RAM goes up, surley if they are using ram they are using energy?
Also surely the energy that these apps are using is MORE then the energy of the task killer itself?
There is ****loads of apps that just seem to run themselves in background and have no need to, I set my killer to kill every 30 mins or whenever screen is off aswell as manually when I choose to.
Can you provide any evidence that the task killer uses more energy then all the apps running in background combined as I seem to get much better battery with it then without it.
TheATHEiST said:
So why when I run a task killer I get over a dozen apps running in list and when I close them my free RAM goes up, surley if they are using ram they are using energy?
Also surely the energy that these apps are using is MORE then the energy of the task killer itself?
There is ****loads of apps that just seem to run themselves in background and have no need to, I set my killer to kill every 30 mins or whenever screen is off aswell as manually when I choose to.
Can you provide any evidence that the task killer uses more energy then all the apps running in background combined as I seem to get much better battery with it then without it.
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Click to collapse
No, just being in RAM memory does not (or maybe very little) use energy. When idle, they're just stored there. A lot of apps simply restart soon after you kill them, consuming a lot more power than just leaving them be, and on top of that you may experience bad app behaviour.
Well, if those apps do stuff they shouldn't be doing, they're badly developed and should be removed or updated, simple as that. Chances are though that those apps really need to be running (and their battery consumption doesn't necessarily have to be high), in which case killing them is even worse.
A lot of well known devs have very clearly pointed this out multiple times (Cyanogen for example is one of them), even Google twittered about it. Do some research, there's plenty of info on it.
It was good to know that info, i never knew that app killers could do more damage and use more power than none at all.
TheATHEiST said:
So why when I run a task killer I get over a dozen apps running in list and when I close them my free RAM goes up, surley if they are using ram they are using energy?
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Click to collapse
No. Android kills applications to free up RAM usage when i needs them.
Also surely the energy that these apps are using is MORE then the energy of the task killer itself?
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Also incorrect, most applications are killed upon exit/back key hit. Or put into a suspended mode that eats no battery (Android Browser, Facebook etc)
There is ****loads of apps that just seem to run themselves in background and have no need to, I set my killer to kill every 30 mins or whenever screen is off aswell as manually when I choose to.
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If only that was true. Killing applications will restart them which uses RAM to restart them which can also slow down your system. Applications don't run unless they are continuously fetching/streaming data or providing a service.
Can you provide any evidence that the task killer uses more energy then all the apps running in background combined as I seem to get much better battery with it then without it.
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Ha, I don't believe you.
tl;dr version at the bottom.
Originally Posted by Google
By default, every application runs in its own Linux process. Android starts the process when any of the application's code needs to be executed, and shuts down the process when it's no longer needed and system resources are required by other applications. A content provider is active only while it's responding to a request from a ContentResolver. And a broadcast receiver is active only while it's responding to a broadcast message. So there's no need to explicitly shut down these components.
Activities, on the other hand, provide the user interface. They're in a long-running conversation with the user and may remain active, even when idle, as long as the conversation continues. Similarly, services may also remain running for a long time. So Android has methods to shut down activities and services in an orderly way:
- An activity can be shut down by calling its finish() method. One activity can shut down another activity (one it started with startActivityForResult()) by calling finishActivity().
- A service can be stopped by calling its stopSelf() method, or by calling Context.stopService().
- Components might also be shut down by the system when they are no longer being used or when Android must reclaim memory for more active components.
If the user leaves a task for a long time, the system clears the task of all activities except the root activity. When the user returns to the task again, it's as the user left it, except that only the initial activity is present. The idea is that, after a time, users will likely have abandoned what they were doing before and are returning to the task to begin something new.
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Click to collapse
Originally Posted by Google
Activity lifecycle
An activity has essentially three states:
- It is active or running when it is in the foreground of the screen (at the top of the activity stack for the current task). This is the activity that is the focus for the user's actions.
- It is paused if it has lost focus but is still visible to the user. That is, another activity lies on top of it and that activity either is transparent or doesn't cover the full screen, so some of the paused activity can show through. A paused activity is completely alive (it maintains all state and member information and remains attached to the window manager), but can be killed by the system in extreme low memory situations.
- It is stopped if it is completely obscured by another activity. It still retains all state and member information. However, it is no longer visible to the user so its window is hidden and it will often be killed by the system when memory is needed elsewhere.
- If an activity is paused or stopped, the system can drop it from memory either by asking it to finish (calling its finish() method), or simply killing its process. When it is displayed again to the user, it must be completely restarted and restored to its previous state.
- The foreground lifetime of an activity happens between a call to onResume() until a corresponding call to onPause(). During this time, the activity is in front of all other activities on screen and is interacting with the user. An activity can frequently transition between the resumed and paused states - for example, onPause() is called when the device goes to sleep or when a new activity is started, onResume() is called when an activity result or a new intent is delivered. Therefore, the code in these two methods should be fairly lightweight.
Click to expand...
Click to collapse
The following diagram illustrates these loops and the paths an activity may take between states. The colored ovals are major states the activity can be in. The square rectangles represent the callback methods you can implement to perform operations when the activity transitions between states.
tl;dr version
- Android is hard coded to automatically kill a task when more memory is needed.
- Android is hard coded to automatically kill a task when it's done doing what it needs to do.
- Android is hard coded to automatically kill a task when you haven't returned to it in a long time.
- Most services (while possibly running in the background) use very little memory when not actively doing something.
- A content provider is only doing something when there is a notification for it to give. Otherwise it uses very little memory.
- Killing a process when it isn't ready only causes it to have to reload itself and start from scratch when it's needed again.
- Because a task is likely running in the background for a reason, killing it will only cause it to re-spawn as soon as the activity that was using it looks for it again. And it will just have to start over again.
- Killing certain processes can have undesirable side effects. Not receiving text messages, alarms not going off, and force closes just to name a few.
- The only true way to prevent something from running at all on your phone would be to uninstall the .apk.
- Most applications will exit themselves if you get out of it by hitting "back" until it closes rather than hitting the "home" button. But even with hitting home, Android will eventually kill it once it's been in the background for a while.
StephanV said:
For some people, with certain apps behaving in a certain way (for example business people getting emails every minute), this can really be a serious battery hug. Again no need to dumb down your phone too much, but it if you really need to squeeze out those extra hours of juice this is a valid option.
Click to expand...
Click to collapse
Obviously you don't have push email setup. Nobody buys the HD2 for that, they buy a Blackberry. Even syncing every hour isn't going to harm your battery other then a few moments versus turning it off altogether. No noticeable differences.
That's plain rubbish. More brightness = more emitted light = more emitted energy. Read a physics book someday, this really makes no sense. Display is one of the biggest battery hogs, especially when actively using your phone. Leaving it on a low brightness level sure helps heaps.
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Click to collapse
Like I said above, has no affects on me. On a laptop, sure. Because those are 15 inch screens, not on a 4.3.
Bullocks again. First of all, underclocking cannot damage your phone in any way. Obviously no scientist has done research (actually, someone probably has but I don't feel like googling any right now) to provide solid evidence on the matter of cpu clocking affecting battery life, but any tech-guy with some experience will disagree with you. No need to clock down your CPU to 245Mhz obviously, but a 900Mhz clock speed will still more than suffice for most users. Again this won't significantly boost battery performance, but all the small bits help.
Click to expand...
Click to collapse
Are you serious? Overclocking and under-clocking has already been proven to harm Intel and AMD processors on main computers in long term situations. Phones run processors just like your laptop/desktop PC does. There's been nothing to prove it helps save battery. I have never used SetCpu and think it's stupid and my phone still outlasts a buddy who runs SetCPU to underclock the CPU. Speed doesn't affect battery or you'd understand that slower CPU would take longer time to run applications, further reducing the battery.
Define heavy usage. How about playing Angry Birds at 100% brightness, while listening to Pandora with your Bluetooth headset/headphones, through a 3G connection obviously. Not a very far-fetched setup eh!is so
I'll buy you a cookie if you last more than, say, 6 hours. You probably won't last 4 hours either but I really don't feel like buying you a cookie.
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Click to collapse
Lets use some basic mathematical skills here. Indeed I just tested this for an hour straight and the drain was 150-200ma constantly. The HD2 battery is something like 1200, 1300ma whatever in total. Lets say its 1200 (too lazy to check) that divided by 200ma drain equals six. Six hours so your logic goes out the door.
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FirefighterDown said:
Obviously you don't have push email setup. Nobody buys the HD2 for that, they buy a Blackberry. Even syncing every hour isn't going to harm your battery other then a few moments versus turning it off altogether. No noticeable differences.
Click to expand...
Click to collapse
I'm not sure I'm with you here. I do have push email enabled, and it's one of the things I like about Android. What does Blackberry have to do with this? Missing your point.
Well, in your case, it may not be a noticeable difference. It does for people who get a lot of emails. Exactly like I said in my previous posts. What is your point?
Like I said above, has no affects on me. On a laptop, sure. Because those are 15 inch screens, not on a 4.3.
Click to expand...
Click to collapse
Well, I'm 100% sure it affects you too. You can't just create energy out of nothing. Upping the intensity from lowest to highest easily adds in an extra 80mA, and that's just a rough and probably too low estimate.
Have you ever compared you HD2's battery with a laptop battery? Not quite in the same league of size now is it. Moar size = moar powers (well, kind of). Dumb laptop comparison, sorry to put it like this.
You can go ahead and try to reinvent battery usage all you want, but a 4,3" screen is and always will be one of the major battery hogs on a phone like this.
Are you serious? Overclocking and under-clocking has already been proven to harm Intel and AMD processors on main computers in long term situations. Phones run processors just like your laptop/desktop PC does. There's been nothing to prove it helps save battery. I have never used SetCpu and think it's stupid and my phone still outlasts a buddy who runs SetCPU to underclock the CPU. Speed doesn't affect battery or you'd understand that slower CPU would take longer time to run applications, further reducing the battery.
Click to expand...
Click to collapse
Are you? I haven't even used the word 'overclocking' in my entire post, of course that's bad for your hardware. Underclocking isn't gonna do **** though. I'll buy you another cookie if you find a valid source backing that statement up. But let me give you a hint: ain't gonna happen José. Just sayin'. (Disclaimer: I'm talking about realistic/plausible underclocking situations here, applicable to comparable hardware)
Uhm actually there has. Moar CPU = moar heat = moar power loss = moar battery loss. Again, conservation of energy, which could be found in the book I advised you earlier (well actually a thermodynamics book would be more appropriate).
Sounds like some very valid empirical proof you got right there. I'm sorry, but I could care less about your 1 comparison with that unknown phone of your unknown buddy, whom I have no clue about if he can even properly configure SetCPU or has a properly configured battery.
Lets use some basic mathematical skills here. Indeed I just tested this for an hour straight and the drain was 150-200ma constantly. The HD2 battery is something like 1200, 1300ma whatever in total. Lets say its 1200 (too lazy to check) that divided by 200ma drain equals six. Six hours so your logic goes out the door.
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Click to collapse
150-200mA while playing Angry Birds @ 100% Brightness, while listening internet radio through 3G and BT headphones? Sorry, that's just physically not possible, hardware-wise. Not ever ever ever ever gonna happen, so you are either lying your ass off or have no clue how to check your current usage properly.
I think I'm sounding like a major douchebag here, but I don't really get it how you feel like you know all about this stuff when very clearly your technical knowledge on this matter is really limited. I'm very happy for you that you're happy with your battery life, but don't try and preach this like t3h l33t battery solution, because put simply: it's not.
[*]Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
actually this is so funny dude ..
more light NEEDS more power .. this is so simple.. like 1+1=2
Hi all,
The battery life of my 4month old SGS is becoming shorter every week! I can 'almost' last a work day (8 hours) with a fully charged battery and minimal use.
I had this problem also on the stock firmware, Darky's rom 8.x was a slight improvement (much faster tho!), Light-ning rom and Darky's rom 9.x.
Everyday I charge my battery untill it is full, when my alarm goes off it's already at 98% (it's still hooked up). When I'm in the train to school, my battery already dropped around 86% (being idle). I check some mobile websites, my e-mail and read some twitter messages.
Because I know services as Twitter (I'm using Tweetdeck) uses alot of resources and battery, so when I'm done looking I always shut down those programs. And I often do an 'end all' task in the 'System' app which I purchased from the market lately to monitor my battery.
During the day the only thing I do is check my mail and some websites, but not for long, mostly it would be around 5minutes or so. So WiFi is turned OFF, GPS is turned OFF, and only GMail synchronizes with default settings. So what's the deal? Is my battery slowly dieing because of oldness, or is there another problem?
Thanks in advance for helping me! You're doing a great job!
Sincerely yours,
S1GNZ
after flashing your custom roms of choice... did you ever do a battery calibration?
like let your phone drain till it dies on its own... turn it on againa nd let it die again to completely drain it to the point where u cant even turn it on.
Then plug your phone in to charge and let it charge to 100%. Keeping the phone plugged in turn on your phone into recovery. Then clear battery status.
Then reboot your phone into normal mode and let it continue charging till it says 100%. WHen you unplug your phone it SHOULD say 100% still.
This normally fix the problem but if you notice that your phone is dying quickly still then PM me.
One small advice,try logging out google talk,of-course if you are not on it much,it will give you at least 2-3 hrs more.
Also,there is already a thread active on this forum 'dont kill your phone
,give it a life' give that a read.
Mainly this battery drains are there because of apps doing sync. or polling.identify them and adjust settings.
Sent from my GT-I9000 using XDA App
cripez said:
after flashing your custom roms of choice... did you ever do a battery calibration?
like let your phone drain till it dies on its own... turn it on againa nd let it die again to completely drain it to the point where u cant even turn it on.
Then plug your phone in to charge and let it charge to 100%. Keeping the phone plugged in turn on your phone into recovery. Then clear battery status.
Then reboot your phone into normal mode and let it continue charging till it says 100%. WHen you unplug your phone it SHOULD say 100% still.
This normally fix the problem but if you notice that your phone is dying quickly still then PM me.
Click to expand...
Click to collapse
I've been browsing these forums lately, and I've also come across a thread which advice is just the opposite and that you should NOT do this, any advice if that's true? And is it also true that deleting the batterystats helps?
GreenSGS said:
One small advice,try logging out google talk,of-course if you are not on it much,it will give you at least 2-3 hrs more.
Also,there is already a thread active on this forum 'dont kill your phone
,give it a life' give that a read.
Mainly this battery drains are there because of apps doing sync. or polling.identify them and adjust settings.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Am I auto-logged in on Google talk? If so, how do I log myself out :$? So Google sync might drain it? (Mail, Agenda, Contacts?)
Thanks for the quick replies! I really appreciate it!
Sincerely yours,
S1GNZ
I am not 100% sure if you auto logged or not.I believe not but if not so , then open app,press menu/setting button on phone,select logout.also if you not intending to use data network,press power key till you see a menu turn off,data network,turn it on when you need it.These small things saves some power.
If you dont want to mess around with this little twiks then 'juice plotter' is the app for you.it will manage lots of things and defi. saves battery.
BTW based on your usage desc., I think I use it in similar way ...almost and yet phone makes ~2 days.
Sent from my GT-I9000 using XDA App
S1GNZ said:
I've been browsing these forums lately, and I've also come across a thread which advice is just the opposite and that you should NOT do this, any advice if that's true? And is it also true that deleting the batterystats helps?
S1GNZ
Click to expand...
Click to collapse
You of course wouldn't be doing this alot nor should you NEED to do this often. It's only something you do when you're experiencing what you currently are.
Personally I have no idea why anyone say u "Should NOT" do this.. it's not like you're altering anything hardware wise. It's mainly software and power usage aspects.
Like I said to each their own. Some people say custom roms are a "No-No" cuz it messes with the phone in more bads than good and some says stock roms are for noobs. You dont HAVE to try what I said, it's merely a suggestion of fix or methods that seems to solve the problems others have encountered.
Clearing the battery status pretty much resets it's counter to 100% and from there it will "calculate" the life of the battery from full to empty. It's a calibration thing.
Now on regards to usage, keep your data plan off and auto-sync off when you're not using it. Leave your wifi off and gps off as well.. pretty much keep anything you dont need off until you need it. Some samsung apps does a background run thing where it'll auto turn on and auto run in the background which drains ur battery quite badly. If you don't use goggle talk or samsung chat apps, there are many ways to remove them completely so it won't mess with your battery life
Simple you installed a rom with multiple posts on battery drain problem .
A rom that also tells you about battery drain problems /fix on its front page .
jje
GreenSGS said:
I am not 100% sure if you auto logged or not.I believe not but if not so , then open app,press menu/setting button on phone,select logout.also if you not intending to use data network,press power key till you see a menu turn off,data network,turn it on when you need it.These small things saves some power.
If you dont want to mess around with this little twiks then 'juice plotter' is the app for you.it will manage lots of things and defi. saves battery.
BTW based on your usage desc., I think I use it in similar way ...almost and yet phone makes ~2 days.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Okay! And you're right, it logs me on when I start the app. But I logged me out, just to be sure. I know about turning of the mobile data traffic, I'll see how much it saves. I think I came across juice plotter, but I'll look into it. Thanks!
cripez said:
You of course wouldn't be doing this alot nor should you NEED to do this often. It's only something you do when you're experiencing what you currently are.
Personally I have no idea why anyone say u "Should NOT" do this.. it's not like you're altering anything hardware wise. It's mainly software and power usage aspects.
Like I said to each their own. Some people say custom roms are a "No-No" cuz it messes with the phone in more bads than good and some says stock roms are for noobs. You dont HAVE to try what I said, it's merely a suggestion of fix or methods that seems to solve the problems others have encountered.
Clearing the battery status pretty much resets it's counter to 100% and from there it will "calculate" the life of the battery from full to empty. It's a calibration thing.
Now on regards to usage, keep your data plan off and auto-sync off when you're not using it. Leave your wifi off and gps off as well.. pretty much keep anything you dont need off until you need it. Some samsung apps does a background run thing where it'll auto turn on and auto run in the background which drains ur battery quite badly. If you don't use goggle talk or samsung chat apps, there are many ways to remove them completely so it won't mess with your battery life
Click to expand...
Click to collapse
Don't be offended by what I said! . I only wanted to make sure I'm doing the right thing, I appreciate your criticism though. I did what you said and fully drained my battery yesterday, kept it charging overnight, cleared the batterystats through recovery mode and at the moment it's charging till 100%. I will see if it helps!
And according to my usage, I have Wifi and GPS turned of as default. And because I reinstalled a new ROM inclusive data wipe I don't have much chat apps installed, maybe there are some default apps that don't show up in the 'System panel' app though?
JJEgan said:
Simple you installed a rom with multiple posts on battery drain problem .
A rom that also tells you about battery drain problems /fix on its front page .
jje
Click to expand...
Click to collapse
Care to explain a bit further?
FYI, I installed these ROMS:
past: Stock firmware 2.2.1
past: Darky's ROM v8.0 Gingerbread edition
past: Light-ning ROM 2.2 (if I'm correct, it's probably the latest)
current: Darky's ROM v9.2 Extreme edition (9.2 should've fixed the battery drain, am I right?)
Can't thank you enough for the replies!
Sincerely yours,
S1GNZ
im having similar problems too. calibrating doesnt really make a difference.
i installed an app called task identifier which is brilliant it tell me whats happening when the phone is asleep. the only trouble is i dont understand what these processes are so i cant disable them.... is there any sort of app out there that completely logs / signs you out of every app ??
i have 108 apps (not including system apps) and its hard trying to eliminate the battery drainers
Care to explain a bit further?
As it says post lots of with battery problems big big percentage running Darky rom .
current: Darky's ROM v9.2 Extreme edition (9.2 should've fixed the battery drain, am I right?) You would have to ask on dARKY Post .
Look at Battery drain thread LAST POST OR SO MAY BE OF INTEREST .
I am of the opinion that if a rom breaks something then installing more roms will often not fix the problem . I prefer a blank completely wiped phone in such cases with no trace of any rom left on it .
jje
@azzledazzle 108 apps? really ????
I don't have that much on my PC!
I think we should start narrowing down which apps drain most juice. I've been using Advanced Task Killer just to narrow down a couple.
example:
Sound Hound - starts on its own
Facebook had an issue with notifications push, when disabled, it still sent notifications to my phone. But I think they fixed it in the latest version.
We could start adding versions to know which app is a 'juice drainer'
First and foremost, this will only apply to you if you have seen the following symptom:
You go to Settings -> About phone -> Battery usage -> click on the graph above and see "Awake" as a solid bar instead of (mostly) lining up with the "Screen on" spotted bar below. Here's my previous thread of when I discovered this issue when my "Awake" bar showed solid for an entire 8 hours when my "Screen on" would show frequent off/on's:
http://forum.xda-developers.com/showpost.php?p=13938317&postcount=772
I found my SGSII was getting decent battery life, but idle was certainly worse than my SGSI. I couldn't figure it out for the life of me what could be causing it given I was running the exact same apps as my SGSI 2.2.1 handset, but the solid Awake bar did not sit well with me.
Observations:
1) After 8+ hours of solid Awake, I would have no apps running under Settings -> Applications -> Running services except for those that I normally would expect in the background... Settings, NoLED, Google Voice, Swype, etc.
2) I noticed that under this "Running services" screen, if you hit Menu and select "Show cached processes," there are actually other cached processes that are in a semi-dormant state. Are they running or are they not? Hmmm....
3) After a system restart, the Awake and Screen on would line up once again.
Suspicion/Hypothesis:
Some app that I normally have running... even if I completely exit out of, it would sit under cached processes and somehow still keep the device awake.
Testing:
First, wanted to see which app when normally running would keep the phone "Awake." After a few days of testing, isolated it down to eBuddy, which is a chat client I used to have running nonstop on my Froyo SGS. So, after several hours of running eBuddy and seeing a solid Awake bar, I exited out of eBuddy properly (Menu -> Exit), ensured it was no longer running under Running services, and tested it for another 4 hours. Sure enough, with the device mostly idle and eBuddy shutdown, the Awake remained solid/on!
So, I then revisited Settings -> Applications -> Running services -> Menu -> Show cached processes, I saw eBuddy was still cached and taking up memory. So, I clicked on the process and chose Force stop. Afterwards, I let the device idle for a few hours more, and the Awake and Screen on lined up once again.
Conclusion:
I'm not sure if this is a Gingerbread bug or eBuddy bug or a combination thereof, but something changed in the code from Froyo to Gingerbread. Probably has to do with this caching feature, but there ARE apps out there that will keep your device constantly on even if you do properly exit out of them.
Solution:
I used to run "Advanced Task Killer" on my SGS with Froyo but never bothered with Gingerbread because people much smarter than me on here have said time and time again "it's not necessary for Gingerbread, you're wasting time/battery life." Well, that still may be true, but given there are these rogue apps that will cause Gingerbread to stay constantly awake, Advanced Task Killer is the best solution at this time.
(It may not be pretty, but hey, it works.)
So, I installed Advanced Task Killer, did a fresh boot, put all the system apps and other apps I don't want ever shut down (Email, Swype, Settings, etc) on the ignore list, turned the kill setting to every hour, and let it sit. I can say for the past 2 days, my idle battery life has improved significantly. Normally by the end of my work day, I'd be skimming along around 40-50%. (Keep in mind, I use the phone primarily for business, which means 2 push E-mails, 2 pull E-mails, constant text messaging, and lots of phone calls.) The last two days, I have been easily at 70-80% by the end of the day. For instance, right now at 4PM CST, I am still at 82% remaining battery.
Also, keep in mind, I have just about EVERYTHING else I don't need frozen/uninstalled through Titanium backup. This includes but not limited to WIFI Sharing, all the hubs, all the readers, all the SNS junk, AP News, Accuweather, etc.
And the most telling bit that the fix is working: My Screen on and Awake line up perfectly with no more solid bar for Awake. And, this is even after running eBuddy last night.
I know this won't help everyone, but hopefully, it will be of use for some of you. Good luck!
If you're managing to kill apps that keep the phone awake, does it prevent you from receiving messages on eBuddy when the screen is off?
dinan said:
If you're managing to kill apps that keep the phone awake, does it prevent you from receiving messages on eBuddy when the screen is off?
Click to expand...
Click to collapse
Interesting question. I had Advanced Task Killer running all last night, and I woke up to messages in eBuddy in the morning. So, my immediate answer to you would be "no," but this will probably take more testing.
Maybe, I'll set ATK to an aggressive 15 minute kill, and have someone message me after 15 minutes of idling with eBuddy running...
I have noticed that with eBuddy actively running, you cannot select it under ATK and kill it. You must exit out of eBuddy properly (Menu -> Exit) for its active process to shut down. Little did I know though... it would still float around in your "Cached processes" afterwards and keep your device Awake!
Well I've been using ATK since this morning and I can't find any change in Android OS ..
It's still high..
Anyway ATK reports that all the games I downloaded from gameshub are active..
And even if it kills them, they appear again in like 10 minutes.. It's really wierd
TMaLuST said:
Well I've been using ATK since this morning and I can't find any change in Android OS ..
It's still high..
Anyway ATK reports that all the games I downloaded from gameshub are active..
And even if it kills them, they appear again in like 10 minutes.. It's really wierd
Click to expand...
Click to collapse
I don't use game hub, but I do have a bunch of games on my device, including the larger Gameloft games. And, I can say for a fact that I do not have any of them ever running in the background.
Something else is keeping them alive, and has nothing to do with ATK. ATK will only help to kill cached processes, but if something is launching them again, that's what you need to look into stopping.
Well.. I do not like tools like the Advanced Task manager.. BUT looking at battery drainage it seems to do wonders!
8 hours of light usage (display 45 mins) --> 75% battery left
3g on (with JuiceDefender à 30 mins) + sync (so I receive whatsapp messages & mail etc)
Listened to music / radio for about 1-1.5 hours
Android OS is sadly still at 36%, Display at 22%
But this I can live with !
Thanks!
[edit]
It would obv. be nicer to be at 80+% without that Android bug... Ah, and I did delete / freeze all that Samsung crap with Titanium, didnt really help much! I can also recommend getting CPU spy to see how much your phone actually is in the sleep mode (around 80% for me!)
Breece said:
Well.. I do not like tools like the Advanced Task manager.. BUT looking at battery drainage it seems to do wonders!
8 hours of light usage (display 45 mins) --> 75% battery left
3g on (with JuiceDefender à 30 mins) + sync (so I receive whatsapp messages & mail etc)
Listened to music / radio for about 1-1.5 hours
Android OS is sadly still at 36%, Display at 22%
But this I can live with !
Thanks!
[edit]
It would obv. be nicer to be at 80+% without that Android bug... Ah, and I did delete / freeze all that Samsung crap with Titanium, didnt really help much! I can also recommend getting CPU spy to see how much your phone actually is in the sleep mode (around 80% for me!)
Click to expand...
Click to collapse
Yeah, I wouldn't run ATK unless I absolutely have to. Like I said in my first post, it is a "brute force" method of ensuring apps are completely closed out and there are no rogue cached processes keeping your device awake. Since I've installed it, the "solid Awake bar" phenomena is completely resolved... and in return, I get much better battery life.
And yes, this is of course on top of freezing just about everything Samsung and anything else I don't need or care to use.
Couldnt agree more!
One questions, what is your "Android OS" % at?
Breece said:
Couldnt agree more!
One questions, what is your "Android OS" % at?
Click to expand...
Click to collapse
8%... Display is at 62%, LOL.
Interesting ^^ Oh well.. my battery life should improve but if it stays like this I am fine with it...
Oh Hope ?
Nah, i will try it
cmd512 said:
....
Solution:
I used to run "Advanced Task Killer" on my SGS with Froyo but never bothered with Gingerbread because people much smarter than me on here have said time and time again "it's not necessary for Gingerbread, you're wasting time/battery life." Well, that still may be true, but given there are these rogue apps that will cause Gingerbread to stay constantly awake, Advanced Task Killer is the best solution at this time.
(It may not be pretty, but hey, it works.)
So, I installed Advanced Task Killer, did a fresh boot, put all the system apps and other apps I don't want ever shut down (Email, Swype, Settings, etc) on the ignore list, turned the kill setting to every hour, and let it sit. I can say for the past 2 days, my idle battery life has improved significantly. Normally by the end of my work day, I'd be skimming along around 40-50%. (Keep in mind, I use the phone primarily for business, which means 2 push E-mails, 2 pull E-mails, constant text messaging, and lots of phone calls.) The last two days, I have been easily at 70-80% by the end of the day. For instance, right now at 4PM CST, I am still at 82% remaining battery.
Also, keep in mind, I have just about EVERYTHING else I don't need frozen/uninstalled through Titanium backup. This includes but not limited to WIFI Sharing, all the hubs, all the readers, all the SNS junk, AP News, Accuweather, etc.
And the most telling bit that the fix is working: My Screen on and Awake line up perfectly with no more solid bar for Awake. And, this is even after running eBuddy last night.
I know this won't help everyone, but hopefully, it will be of use for some of you. Good luck!
Click to expand...
Click to collapse
WORKED FOR ME AS WELL< EXCELLENT!!!
Task killer is a must
Uninstalling/freezing rogue Samsung apps is a must
ONLY THE COMBINATION WORKS and it works well indeed.
Mmm bizarre! I was waiting for the hordes of people telling you that 'task killers' are unnecessary and stupid.
Thank you very much for your findings.
On my SG2 The android System process is eating almost all my battery! any solution for that?
rdy2go said:
WORKED FOR ME AS WELL< EXCELLENT!!!
Task killer is a must
Uninstalling/freezing rogue Samsung apps is a must
ONLY THE COMBINATION WORKS and it works well indeed.
Click to expand...
Click to collapse
cigaro78 said:
Mmm bizarre! I was waiting for the hordes of people telling you that 'task killers' are unnecessary and stupid.
Thank you very much for your findings.
Click to expand...
Click to collapse
Glad to hear it's working for you guys. With Advanced Task Killer running in the background, I haven't had the "solid Awake bar" reappear again... my Awake bar is always segmented and match up fairly well with my Screen on bar.
Idle battery life is very much acceptable now and definitely no worse than my SGS.
I've always enjoyed your posting and i'm glad you didn't just jump on the bandwagon like everyone else. This is definitely the type of posting we need where everyone work together to solve/identify the issues at hand.
ph00ny said:
I've always enjoyed your posting and i'm glad you didn't just jump on the bandwagon like everyone else. This is definitely the type of posting we need where everyone work together to solve/identify the issues at hand.
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Appreciate the kind words. Like I said in my first post, many people much smarter than me/in-tune with Android have said it's unnecessary. But, you're right... there are way too many "DO THESE STEPS AND IT WILL FIX EVERYTHING" posts on here with 0 to little evidence to back up the claims. In the end, nothing beats thorough testing and proven results.
I for one hope 2.3.4 resolves this bug... ultimately, I'd like to not have to run ATK altogether. But for now, this is a solution that works.
cmd512 said:
Appreciate the kind words. Like I said in my first post, many people much smarter than me/in-tune with Android have said it's unnecessary. But, you're right... there are way too many "DO THESE STEPS AND IT WILL FIX EVERYTHING" posts on here with 0 to little evidence to back up the claims. In the end, nothing beats thorough testing and proven results.
I for one hope 2.3.4 resolves this bug... ultimately, I'd like to not have to run ATK altogether. But for now, this is a solution that works.
Click to expand...
Click to collapse
It works with Freezing/Uninstallin Samsung "bad apps" (WiFi Sharing, Social Hub, etc.). I suggest you emphasize that more in your initial post.
ATK itself helps but ATK is always late (30 minutes or one hour).
That's what I recommend to freeze/uninstall without crippling core functionality:
1 WiFi Sharing and WifiManager
2 Samsung apps (Social Hub, Days, Yahoo Finance, AP News, Games Hub, Readers Hub, Music Hub, AccuWeather)
3 Voice Command Uninstalled using Titanium
It's based on my testing using OS Monitor / ATK - those apps tend to wake up phone for no reason even when you don't use them.
Now it's 24 hours with 4 hours of screen on, no Juice Defender etc.
It works better than SGS (one) despite huge screen and excellent speed.
rdy2go said:
It works with Freezing/Uninstallin Samsung "bad apps" (WiFi Sharing, Social Hub, etc.). I suggest you emphasize that more in your initial post.
ATK itself helps but ATK is always late (30 minutes or one hour).
That's what I recommend to freeze/uninstall without crippling core functionality:
1 WiFi Sharing and WifiManager
2 Samsung apps (Social Hub, Days, Yahoo Finance, AP News, Games Hub, Readers Hub, Music Hub, AccuWeather)
3 Voice Command Uninstalled using Titanium
It's based on my testing using OS Monitor / ATK - those apps tend to wake up phone for no reason even when you don't use them.
Now it's 24 hours with 4 hours of screen on, no Juice Defender etc.
It works better than SGS (one) despite huge screen and excellent speed.
Click to expand...
Click to collapse
Well, freezing and ATK are needed to reach 2 separate goals:
1) Freezing: Needed to completely disable apps you plan on NEVER using.
2) ATK: Needed to completely close out apps you DO use when they stay cached/rogue in the background and keep your device awake.
So I do agree with you, freezing is absolutely necessary, but it really is the bare minimum. You still need ATK on top of that to actively seek out and kill battery draining apps.
I can confirm, OP solution works great on me. Thanks..