Android开发-查看手机cpu信息，内存信息之cpuinfo,meminfo,top

绝地灬酷狼 2023-10-17 18:57 21阅读 0赞

本文演示了查看手机cpu信息，内存信息的方法：即直接查看cpuinfo,meminfo文件。

你也可以使用top命令查看cpu的实时使用情况。

cpuinfo,meminfo文件的位置：

> /proc/cpuinfo
> 
> /proc/meminfo

#### 查看cpu信息： ####

1|shell@android:/proc $ cat cpuinfo
    Processor	: ARMv7 Processor rev 4 (v7l)
    processor	: 0
    BogoMIPS	: 13.53
    
    processor	: 1
    BogoMIPS	: 13.53
    
    Features	: swp half thumb fastmult vfp edsp neon vfpv3 tls 
    CPU implementer	: 0x51
    CPU architecture: 7
    CPU variant	: 0x0
    CPU part	: 0x02d
    CPU revision	: 4
    
    Hardware	: MIONE
    Revision	: 0000
    Serial		: 000000000000000

#### 查看内存信息： ####

shell@android:/proc $ cat meminfo
    MemTotal:         768108 kB
    MemFree:           38292 kB
    Buffers:           22680 kB
    Cached:           116252 kB
    SwapCached:            0 kB
    Active:           558672 kB
    Inactive:          69772 kB
    Active(anon):     491064 kB
    Inactive(anon):      328 kB
    Active(file):      67608 kB
    Inactive(file):    69444 kB
    Unevictable:        1512 kB
    Mlocked:               0 kB
    HighTotal:        423936 kB
    HighFree:           7980 kB
    LowTotal:         344172 kB
    LowFree:           30312 kB
    SwapTotal:             0 kB
    SwapFree:              0 kB
    Dirty:                12 kB
    Writeback:             0 kB
    AnonPages:        491024 kB
    Mapped:           102384 kB
    Shmem:               368 kB
    Slab:              24332 kB
    SReclaimable:       9684 kB
    SUnreclaim:        14648 kB
    KernelStack:        8408 kB
    PageTables:        14080 kB
    NFS_Unstable:          0 kB
    Bounce:                0 kB
    WritebackTmp:          0 kB
    CommitLimit:      384052 kB
    Committed_AS:   10180196 kB
    VmallocTotal:     401408 kB
    VmallocUsed:       60688 kB
    VmallocChunk:     191492 kB

#### 用top命令实时查看cpu使用情况 ####

（按照cpu占用率从高到低）：

127|shell@android:/proc $ top
    
    
    
    User 8%, System 5%, IOW 3%, IRQ 0%
    User 47 + Nice 2 + Sys 31 + Idle 492 + IOW 22 + IRQ 0 + SIRQ 0 = 594
    
      PID PR CPU% S  #THR     VSS     RSS PCY UID      Name
      586  0   3% S    15 518356K  62924K  fg system   com.android.systemui
      488  0   1% S    95 596396K  62916K  fg system   system_server
      135  0   1% S    11  59120K   9520K  fg system   /system/bin/surfaceflinger
     2148  1   1% S    58 555124K  54468K  bg u0_a53   com.netease.news.lite
     4851  1   1% R     1   1120K    524K     shell    top
        4  0   0% S     1      0K      0K     root     kworker/0:0
       21  1   0% S     1      0K      0K     root     kworker/1:1
     3971  1   0% S     1    940K    532K     shell    logcat
      874  0   0% S    11 477336K  34752K  fg system   com.miui.securitycenter
     3849  0   0% S     6   5548K    260K     shell    /sbin/adbd
     3658  0   0% S    20 529940K  49528K  bg u0_a59   com.tencent.mm:push
     4249  0   0% S     1      0K      0K     root     kworker/u:1
      572  0   0% S     1      0K      0K     root     dhd_dpc
     2115  0   0% S    19 511996K  45256K  bg u0_a53   com.netease.news.lite:ajmd
      651  0   0% S    14 509816K  53364K  fg system   com.android.settings
        1  0   0% S     1    428K    296K     root     /init
       82  1   0% S     1      0K      0K     root     kinteractiveup
     3569  1   0% S    34 766140K  69308K  bg u0_a59   com.tencent.mm

可见，在这一次top命令中，cpu占比最多的三个进程是：

> systemui //ui
> 
> system\_server //即android framework各组件所在的进程。
> 
> surfaceflinger //surfaceflinger,用于显示数据到屏幕上。

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