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android dumpsys meminfo 详解

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dumpsys meminfo详解
adb shell dumpsys meminfo [pkg/pid] 可以用来查看指定进程包名的内存使用情况

 

dumpsys meminfo -h 帮助
meminfo dump options: [-a] [-d] [-c] [-s] [--oom] [process]

-a: include all available information for each process.
-d: include dalvik details.
-c: dump in a compact machine-parseable representation.
-s: dump only summary of application memory usage.
-S: dump also SwapPss.
--oom: only show processes organized by oom adj.
--local: only collect details locally, don't call process.
--package: interpret process arg as package, dumping all
processes that have loaded that package.
--checkin: dump data for a checkin
If [process] is specified it can be the name or
pid of a specific process to dump.

 

 

 

名词概念:

 

 

 

名词解释:

 名词 说明  补充 

Uptime

表示启动到现在的时长,不包含休眠的时间,单位毫秒(ms)

 

Realtime

表示启动到现在的时长,包含休眠的时间,单位毫秒(ms)

 

Native Heap

指c 中malloc出来的堆空间

 扩展:c++申请的内存为native process,java申请的内存:java process

Dalvik Heap

指java中new出来的java堆空间

只是占用的虚拟内存的空间
Pss Total 指占用了真实的物理内存的空间  
private dirty 指私有驻留内存 扩展:进程内存空间是虚拟内存,区分于物理内存,进程无法直接操作物理内存RAM。必要时,操作系统对其进行映射,使进程能应用到物理内存
Heap Size 指占用总内存(Heap  堆)  
Heap Alloc 指在虚拟地址中分配了这么多空间  
Heap Free 空闲内存  

   注:因为Android系统对dalvik的vm heapsize作了硬性限制,当java进程申请的java空间超过阈值时,就会抛出OOM异常(这个阈值可以是48M、24M、16M等,视机型而定)

   查看单个应用最大内存限制,输入命令:getprop|grep heapgrowthlimit  得到结果该机型为192M。dalvik process 超过就会抛OOM异常

 

Applications Memory Usage (in Kilobytes):
Uptime: 246353123 Realtime: 292602983

** MEMINFO in pid 8410 [com.doctopia.zeroe] **
                   Pss  Private  Private  SwapPss     Heap     Heap     Heap
                 Total    Dirty    Clean    Dirty     Size    Alloc     Free
                ------   ------   ------   ------   ------   ------   ------
  Native Heap    52421    52336       24        0    82432    61868    20563
  Dalvik Heap    31844    31816        4        0    38652    30460     8192
 Dalvik Other    14051    14048        0       12
        Stack     3640     3640        0       28
       Ashmem       80       48        0        0
      Gfx dev    12848    12288      560        0
    Other dev       76        0       76        0
     .so mmap     2292      936      252       95
    .jar mmap        0        0        0        0
    .apk mmap     1642       76     1064        0
    .ttf mmap        0        0        0        0
    .dex mmap     6073     5860      132        4
    .oat mmap     2153        0        0        0
    .art mmap     2682     2408        8       82
   Other mmap      312        8      184        0
   EGL mtrack      432      432        0        0
    GL mtrack    26160    26160        0        0
      Unknown    14579    14576        0       18
        TOTAL   171524   164632     2304      239   121084    92328    28755

 App Summary
                       Pss(KB)
                        ------
           Java Heap:    34232
         Native Heap:    52336
                Code:     8320
               Stack:     3640
            Graphics:    39440
       Private Other:    28968
              System:     4588

               TOTAL:   171524       TOTAL SWAP PSS:      239

 Objects
               Views:      821         ViewRootImpl:        2
         AppContexts:        6           Activities:        3
              Assets:        6        AssetManagers:        3
       Local Binders:       62        Proxy Binders:       36
       Parcel memory:       24         Parcel count:       98
    Death Recipients:        2      OpenSSL Sockets:       25
            WebViews:        1

 SQL
         MEMORY_USED:      279
  PAGECACHE_OVERFLOW:       76          MALLOC_SIZE:       62

 DATABASES
      pgsz     dbsz   Lookaside(b)          cache  Dbname
         4       24             38      1254/33/7  /data/user/0/com.doctopia.zeroe/databases/sensorsdata
         4       60            136      141/56/20  /data/user/0/com.doctopia.zeroe/databases/bugly_db_

 Asset Allocations
    zip:/data/app/com.doctopia.zeroe-1/base.apk:/resources.arsc: 972K

 

其他常用服务信息查询

 

标签:shell,meminfo,dumpsys,process,adb,内存,Heap,android
来源: https://www.cnblogs.com/helloTerry1987/p/13109971.html