blocks|key|385955|text|在任何普通的linux+/+unix上试试man+top+(尽管我不认为Android默认安装了man+)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|385956|实际上，我现在看起来那些列标题似乎没有在man页面上被提及，但重点是man通常是开始查找关于linux+/+unix命令的信息的最佳位置。|385957|entityMap|0|LINK|mutability|MUTABLE|url|http://unixhelp.ed.ac.uk/CGI/man-cgi?top^0|L|7|L|7|0|0|K|3|Y|3|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

Try <a href="http://unixhelp.ed.ac.uk/CGI/man-cgi?top" rel="nofollow"><code>man top</code></a> on any normal linux / unix (though I don't think Android has man installed by default).

Actually now I look it looks like those column titles aren't mentioned on that <code>man</code> page, but the point stands that <code>man</code> is usually the best place to start looking for information about linux / unix commands.

blocks|key|385995|text|以下是我的(未经训练的)猜测：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|385996|PID+-进程ID|385997|CPU%25+-+CPU使用率|385998|S状态(或可能的状态)+R=Running、S=Sleeping|385999|#THR+-线程数|386000|PCY+-我有点被难住了。您似乎很好地掌握了它的用途，所以这就足够了(假设fg和bg是唯一可能的值)|386001|UID+-启动任务的用户的名称|386002|名称-这是不言自明的……|386003|VSS和RSS:来自http://groups.google.com/group/android-beginners/browse_thread/thread/e6f2d396a68238ad?pli=1|offset|length|386004|虚拟集合大小(有时缩写为VSZ)和常驻集合大小。谷歌搜索会找到一些关于Linux的详细信息。下面是高速版本：|386005|VSS表示与进程关联的虚拟内存量，驻留集大小表示与进程关联的物理页的数量。|386006|VSS在Android上通常是没有意义的。如果我对一个1MB的文件进行内存映射，VSS会增长1MB，但是我没有使用任何资源(除了虚拟映射表中的条目)。|386007|RSS在Android上部分是无意义的，因为它不能识别多个进程之间共享的页面。如果进程A的RSS为2MB，而进程B的RSS为2MB，则可能有4MB的物理页面被占用。也有可能只占用了2MB的物理页面。|386008|编辑:只要你的Youtube是休眠事务，如果它没有积极地做任何事情，它将是休眠，即使它是在前台。尝试创建一个简单的应用程序，基本上是在(1){做一些没有意义的事情}，看看它是在睡眠还是在运行。诚然，这也可能是Android处理多任务的方式的一个怪癖。|386009|EDIT2：|386010|PCY的-|386011|PCY+--+Policy+--决定Android内存管理器应该如何处理应用程序|386012|FG+--前台--进程被认为是前台进程，不应该为了释放内存而终止进程|386013|BG+--后台--进程被认为是后台进程(不在前台运行，可能会被杀死以释放内存)|386014|entityMap|0|LINK|mutability|MUTABLE|url|http://groups.google.com/group/android-beginners/browse_thread/thread/e6f2d396a68238ad?pli=1^0|0|0|0|0|0|0|0|0|A|2K|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|1O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1P|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1R|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1S|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1T|8|@]|9|@$R|1U|S|1V|1|1W]]|A|$]]|$1|T|3|U|5|6|7|1X|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|20|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|21|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|22|8|@]|9|@]|A|$]]|$1|15|3|16|5|6|7|23|8|@]|9|@]|A|$]]|$1|17|3|18|5|6|7|24|8|@]|9|@]|A|$]]|$1|19|3|1A|5|6|7|25|8|@]|9|@]|A|$]]|$1|1B|3|1C|5|6|7|26|8|@]|9|@]|A|$]]|$1|1D|3|-4|5|6|7|27|8|@]|9|@]|A|$]]]|1E|$1F|$5|1G|1H|1I|A|$1J|1K]]]]

Here's my (un)educated guesses:

PID - Process ID

CPU% - CPU Usage

S - State (or possibly status) R=Running, S=Sleeping

#THR - Number of threads

PCY - I'm kinda stumped here. You seem to have a pretty good grasp of what it does, so that's good enough (assuming that fg and bg are the only possible values)

UID - Name of the user that started the task

Name - This one is self-explanatory...

VSS and RSS: From <a href="http://groups.google.com/group/android-beginners/browse_thread/thread/e6f2d396a68238ad?pli=1">http://groups.google.com/group/android-beginners/browse_thread/thread/e6f2d396a68238ad?pli=1</a>

Virtual Set Size (sometimes abbreviated VSZ) and Resident Set Size. 
 Googling will turn up some detailed info for Linux. Here's the high 
 speed version: 

VSS indicates how much virtual memory is associated with the process, 
 Resident Set Size indicates how many physical pages are associated 
 with the process. 

VSS is generally meaningless on Android. If I memory-map a 1MB file, 
 VSS grows by 1MB, but I haven't used any resources (other than entries 
 in a virtual mapping table). 

RSS is partially meaningless on Android, because it doesn't identify 
 pages shared between multiple processes. If process A has an RSS of 
 2MB, and process B has an RSS of 2MB, it's possible that there are 4MB 
 of physical pages occupied. It's also possible that there are only 
 2MB of physical pages occupied.

EDIT:
As far as your Youtube is sleeping deal, if it isn't actively doing anything, it will be sleeping, even if it is in the foreground. Try creating a simple app that is basically while(1){Do something meaningless} and see if it is sleeping or running. Granted it also might be a quirk with the way that Android handles multitasking.

EDIT2: 
Mostly-uneducated-somewhat-random-stab-in-the-dark for PCY -- 
PCY -- Policy -- Determines how an app should be treated by Android's memory manager 
FG -- Foreground -- Process is considered a foreground process and should not be killed to free mmemory 
BG -- Background -- Process is considered a background process (not actively running in foreground and may be killed to free memory)

blocks|key|386056|text|顶级源码顶级源码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|386057|1：http://androidxref.com/4.0.4/xref/system/core/toolbox/top.c#442，获取计算每个值的完整逻辑|offset|length|386058|entityMap|0|LINK|mutability|MUTABLE|url|http://androidxref.com/4.0.4/xref/system/core/toolbox/top.c#442^0|0|2|1R|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

top sourcecode [ top sourcecode][1]

[1]: <a href="http://androidxref.com/4.0.4/xref/system/core/toolbox/top.c#442" rel="nofollow">http://androidxref.com/4.0.4/xref/system/core/toolbox/top.c#442</a> to get the complete logic of how each value is calculated

blocks|key|386072|text|此page说明了VSS和RSS的含义，但没有指定如何获得更有意义的PSS和USS。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|386073|entityMap|0|LINK|mutability|MUTABLE|url|http://elinux.org/Android_Memory_Usage^0|1|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

this <a href="http://elinux.org/Android_Memory_Usage" rel="nofollow">page</a> says what VSS and RSS mean, but does not specify how to obtain the more meaningful PSS and USS

I have found the result of 'top' is different from result of in standard linux.I have searched on the web a little bit but I can not find my answer.
For example, following is the partial result of top in my android:

<pre><code> PID CPU% S #THR VSS RSS PCY UID Name
 814 2% R 1 940K 372K fg root top
 110 1% S 58 185000K 59216K fg system system_server
 31 0% S 1 0K 0K fg root vsync_workqueue
 49 0% S 1 0K 0K fg root file-storage
 52 0% S 1 0K 0K fg root gp2a_wq
 178 0% S 9 98476K 23820K fg system com.android.systemui
</code></pre>

So #THR probably is the number of threads.But what is 'PCY'? I can not find this information in the /proc/(PID)/ folder. And I have found that if I open an youtube, the PCY will be fg. Then if I quit it(youtube), the youtube process still exists but the PCY will be bg. 
And in terms of 'S', I have found all processes are always 'S' which means sleeping, even my youtube app is currently active. It's weired...

Does anyone have any clue:> Thx

Does any one know the 'top' command 's result's meaning in android?

内存管理

内存映射

Android

Linux

我发现“top”的结果与在标准linux.I中的结果不同。我在网上搜索了一下，但我找不到我的答案。例如，以下是我的android中top的部分结果：  PID CPU% S  #THR     VSS     RSS PCY UID      Name  814   2% R     1    940K    372K...

问有人知道'top‘命令在android中的结果是什么意思吗？
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问有人知道'top‘命令在android中的结果是什么意思吗？
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