Some people think that task killers are important on Android. By closing apps running in the background, you’ll get improved performance and battery life – that’s the idea, anyway. In reality, task killers can reduce your performance.Android isn’t Windows and doesn’t manage processes like Windows does. Unlike on Windows, where there’s an obvious way to close applications, there’s no obvious way to “close” an Android application. This is by design and isn’t a problem.When you leave an Android app, going back to your home screen or switching to another app, the app stays “running” in the background. In most cases, the app will be paused in the background, taking up no CPU or network resources. Some apps will continue using CPU and network resources in the background, of course – for example, music players, file-downloading programs, or apps that sync in the background.When you go back to an app you were recently using, Android “unpauses” that app and you resume where you left off. This is fast because the app is still stored in your RAM and ready to be used again,hence consuming no further resources.
Task killers like smart manager think they know better than Android. They run in the background, automatically quitting apps and removing them from Android’s memory. They may also allow you to force-quit apps on your own, but you shouldn’t have to do this normally.If a task killer removes an app from your RAM and you open that app again, the app will be slower to load as Android is forced to load it from your device’s storage.Further s6 has Smart Manager and could be used as a widget or shortcut to battery and storage settings,however you should avoid using the Clean All optimization feature. This feature is said to improve device performance – as the Clean Master app aims to do – but its actual impact is questionable.
Meaning while still sometimes you kill an app it can still leave the traces on heap so next time when you start it ,it will show varyingly more amount of storage used which also fails the notion of default maxMemory() and the app ultimately might crash.Further such leaks are difficult to track as they aren't directly associated to app you killed in first instance.But still sometimes even after killing app, certain features like resources attained may keep running in background without even the app even knowing about them.i.e unnoticeable leaks.Thus you may want to use maxMemory()
which can be invoked (e.g., in your main activity's onCreate() method) as follows:
Runtime rt = Runtime.getRuntime();
long maxMemory = rt.maxMemory();
Log.v("onCreate", "maxMemory:" + Long.toString(maxMemory));
This method tells you how many total bytes of heap your app is allowed to use.
Optimal Behaviour:
An app can stay "running" in the background without any processes eating up your phone's resources. Android keeps the app in its memory so it launches more quickly and returns to its prior state. When your phone runs out of memory, Android will automatically start killing tasks on its own, starting with ones that you haven't used in awhile.
What You Should Do Instead
That said, not all apps are created equal. Many of you have used task killers in the past and actually found that after freeing up memory, your phone works a bit better. It's more likely that this is because you've killed a bad app that was poorly coded, and (for example) keeps trying to connect to the internet even when it shouldn't. Any performance increase you experience is more likely because you killed the right app, not because you freed up loads of memory (or, in many cases, it's just placebo). Instead of killing all those apps, find out which ones are actually causing the problems.using a task killer to deal with a misbehaving app is like using a shotgun to kill a fly – you may fix your problem, but you’re inflicting a lot of other damage in the process.Now
since S6 has 3 gigs of ram,it should'nt have problems,however implementation of smart manager can cause problems with some apps and isnt necessarily android version dependent.Also bare that heapsize tends to be based more on screen resolution, as higher-resolution screens tend to want to manipulate larger bitmaps.
Instead of using a task killer in this situation, you should identify the bad app and uninstall it,or debug it, replacing it with an app that works properly. To pin down the app that’s misbehaving, you can try the
Watchdog Task Manager app
– it will show you which apps are actually using CPU in the background, not which apps are harmlessly being stored in memory.
Captivating Fact:
CyanogenMod, the popular community-developed Android ROM, won’t even
accept bug reports from users using task killers, saying that they
cause more problems than they solve.
A probable cause of issue
if you can try following at once,first of all go to settings >sounds and notifications > App notifications > select smart manager and select hide content on lock screen
then again back to settings go to lockscreen and security >Device security >Disable KNOX active protection and deactivate the anti malware option below KNOX active protection
in lock screen and security go to other security settings > disable send security reports and go down to ussage data access> disable smart manager so after that restart your device.Now see if the app works Also see performace concerns with s6
procstats等）来代替。 - CommonsWare