作者: byronbw 時間: 2010-2-10 11:54 標題: Are Task Killers really necessary for Android phones?
I have noticed most C-hings will recommend a task killer as one of the first apps to install for Android phones. Myself included, coming from a WM background, it seemed killing task is a must to free up phone memory, and I have become obsessed with it. However, please take a look at the following thread:
http://www.droidforums.net/forum ... ing-background.html
There are some quite technical explanations as to why task killing isn't necessary for the Android OS. Apparently the system will allocate memory by itself, and close off unused apps if necessary. Background apps don't use any memory or CPU cycles. On the other hand, if we kill off some necessary system apps, this will lead to slowing down of the system or even forced closure.
As a test, I have resisted the temptation of using a task killer on my N1 in the last 2 days. At the same time I monitored the system memory with systray monitor. I noticed the system memory remained quite stable, and actually increased as I opened more apps (e.g. Browser), confirming the above finding. I also checked battery usage in the setting, none of the apps running in the background were drawing any battery power.
Sorry for the long post, but would like to see what you guys think.
作者: omecon2000 時間: 2010-2-10 12:48
無用好耐了 但仲keep係home度得閒睇下
作者: byronbw 時間: 2010-2-10 13:04
回復 2# omecon2000
但仲keep係home度得閒睇下
I find that if I keep it on the home page, I'll keep checking it all the time and killing everything running in the background - it became an obsession!
I have to remove it
作者: Kelzad 時間: 2010-2-10 14:10
it's unnecessary, but not a bad thing to play around with
作者: outlook 時間: 2010-2-10 14:34
Not necessary at all. If there's not enough memory, Android will kill the app automatically.
作者: aswdv 時間: 2010-2-10 14:52
I also stop using for a while.
In the past, I flashed some Hero ROM onto my G1, task killer seems a bit helpful. But since I gave up Hero ROM and now switched to CM ROM, task killer is no longer necessary.
作者: pakchi70 時間: 2010-2-10 15:23
i seldom use kill apps app
but you feel better when you can really close an app
so it's just psychological feeling better
作者: penthlon 時間: 2010-2-10 15:48
你有時可能想kill左某d apps, 避免佢地係background下載好多data。
作者: byronbw 時間: 2010-2-10 16:05
回復 8# penthlon
你有時可能想kill左某d apps, 避免佢地係background下載好多data
For example? As far as I know, background apps remain inactive, while Android services running in the background cannot / should not be killed. In fact I have noticed after I stopped killing apps in the past 2 days my data use has gone down. What gives?
作者: xenomorph 時間: 2010-2-10 16:39
其實我最擔心係D taskkiller Apps Kill 多左D 常註Process 而導致死機或自動reboot. 始終呢D taskkiller Apps 係由第三方人士寫, 唔知會點. 就好似我install好多Apps之後都攪到部野慢晒.
我宜家都好小心揀D Apps. 冇用既都會uninstall.
作者: felixliu 時間: 2010-2-10 16:52
Thanks for the information.
Well, the link of forum explained clearly in a technical way. Which means android will allocate the memory automatically by itself, task killer is a bit meaningless? For example if I got 25MB free RAM, and 60MB free Ram, will the speed of my phone remain the same?
Actually I ve installed Taskiller and enabled the auto-kill function, however, I ve put some essential apps like live wallpaper, batterylife, clock widget, etc in my ignore list. But sometimes after I played games and opened a browser, the free memory will be just around 2x MB, I feel a lil laggy? Or is it my mental feeling only?
Correct me if I m wrong.
作者: byronbw 時間: 2010-2-10 17:24
After I stopped killing background apps, the free Ram on my N1 has been around 30mb most of the time. But I have noticed sometimes when I run an app (e.g. browser), the amount of free Ram will actually increase to 40mb. I haven't noted any change in performance while leaving apps open in the background. YMMV
作者: 部腦超慢 時間: 2010-2-10 22:13
其實我最擔心係D taskkiller Apps Kill 多左D 常註Process 而導致死機或自動reboot. 始終呢D taskkiller Ap ...
xenomorph 發表於 2010-2-10 16:39
可以用ignore list...
作者: penthlon 時間: 2010-2-10 23:31
回復 penthlon
For example? As far as I know, background apps remain inactive, while Androi ...
byronbw 發表於 2010-2-10 16:05
I am not sure but it seems that 派報生 download news in the background. I can get new news instantly right after I open it.
作者: mkmonkey 時間: 2010-2-11 04:38
的確係會自動放返 d RAM，不過佢要等到咩時候先放 ? 特別係做緊 d 大咬野時 (e.g. 上緊多圖既網時)，一 quit 返出黎去第二度會 lag。的確佢唔會好似 WM 咁易死機，但自己手動清垃圾會即時醒神，何樂而不為呢 ?
作者: xenomorph 時間: 2010-2-11 10:02
其實冇話支唔支持task killer apps既. 之不過當我三日前刪左佢之後, 到現時為止touchwood真係未試過自動reset或hang機. 註: 我係一個唔會熄機既人. 以重要性而言, 間唔中小小慢, 點都會好過無端端自動reset或hang死係度.
我諗我暫時唔會用番佢住.
作者: byronbw 時間: 2010-2-11 11:00
回復 16# xenomorph
I feel the same way. Have not had any problems in the past 3 days either.
作者: omecon2000 時間: 2010-2-11 12:51
舊時用wm機要kill task per 30min ,reset each day
而家真係成10日無做過
作者: metaleadguitar 時間: 2010-2-13 00:47
其實自linux 有kernel 2.6 開始, ram 就會自動做定cache 俾d program, 等佢地更方便更快load 出黎
我試過有客問點解成日ram over 80-90%!, 使唔使加ram
跟住我問過redhat / centos, 佢地都話正常, 就係以上原因
android ....都係咁架咋
真係唔使點kill 架
作者: metaleadguitar 時間: 2010-2-13 00:51
其實自linux 有kernel 2.6 開始, ram 就會自動做定cache 俾d program, 等佢地更方便更快load 出黎
我試過有 ...
metaleadguitar 發表於 2010-2-13 00:47
再講多句,
只會係唔夠用時係cache free 番d ram俾其他process
作者: nothize 時間: 2010-2-14 22:39
我與樓主同有感, 謝謝樓主提出呢個意見!
作者: snoopy11hk 時間: 2010-2-14 22:48
i am curious, wt if u r using something streaming, like video, or website that auto refresh
are they still working if u has not using them for a while, or just being executed without noticing you?