android 内存占用工具,Android系统检测程序内存占用各种方法
1.檢查系統(tǒng)總內(nèi)存
liuhx@uc ~ $ adb shell cat /proc/meminfo
MemTotal:???????? 840868 kB
MemFree:????????? 457344 kB
Buffers:??????????? 1744 kB
Cached:?????????? 203064 kB
SwapCached:??????????? 0 kB
Active:?????????? 234932 kB
Inactive:???????? 129644 kB
Active(anon):???? 170292 kB
Inactive(anon):??????? 0 kB
Active(file):????? 64640 kB
Inactive(file):?? 129644 kB
Unevictable:?????????? 0 kB
Mlocked:?????????????? 0 kB
SwapTotal:???????????? 0 kB
SwapFree:????????????? 0 kB
Dirty:???????????????? 0 kB
Writeback:???????????? 0 kB
AnonPages:??????? 159820 kB
Mapped:??????????? 97916 kB
Slab:?????????????? 7808 kB
SReclaimable:?????? 2920 kB
SUnreclaim:???????? 4888 kB
PageTables:???????? 3516 kB
NFS_Unstable:????????? 0 kB
Bounce:??????????????? 0 kB
WritebackTmp:????????? 0 kB
CommitLimit:????? 420432 kB
Committed_AS:??? 1295272 kB
VmallocTotal:???? 122880 kB
VmallocUsed:?????? 16508 kB
VmallocChunk:????? 76804 kB
第一行MemTotal就是總內(nèi)存。一般并不會等于手機標榜的數(shù)值。說是2G內(nèi)存的手機，會在1.8G左右
2.檢查某個程序的各類型內(nèi)存占用
可用dumpsys meminfo 包名。不知道包名的話，可以用ps命令得到所有運行的程序，也包括得到pid。以自帶的瀏覽器為例：
liuhx@uc ~ $ adb shell dumpsys meminfo com.android.browser
Applications Memory Usage (kB):
Uptime: 23140065 Realtime: 23140065
** MEMINFO in pid 939 [com.android.browser] **
Shared? Private???? Heap???? Heap???? Heap
Pss??? Dirty??? Dirty???? Size??? Alloc???? Free
------?? ------?? ------?? ------?? ------?? ------
Native???? 7111????? 748???? 7048???? 8964???? 8634????? 329
Dalvik???? 7338???? 5096???? 6892???? 7568???? 7041????? 527
Cursor??????? 0??????? 0??????? 0
Ashmem????? 276??????? 0????? 276
Other dev??????? 4??????? 0??????? 0
.so mmap???? 5050???? 1728????? 252
.jar mmap??????? 0??????? 0??????? 0
.apk mmap????? 418??????? 0??????? 0
.ttf mmap????? 439??????? 0??????? 0
.dex mmap??????? 0??????? 0??????? 0
Other mmap???? 2320?????? 16?????? 24
Unknown???? 5173?????? 12???? 5172
TOTAL??? 28129???? 7600??? 19664??? 16532??? 15675????? 856
Objects
Views:????? 104???????? ViewRootImpl:??????? 1
AppContexts:??????? 4?????????? Activities:??????? 1
Assets:??????? 2??????? AssetManagers:??????? 2
Local Binders:?????? 15??????? Proxy Binders:?????? 19
Death Recipients:??????? 0
OpenSSL Sockets:??????? 0
SQL
MEMORY_USED:???? 1468
PAGECACHE_OVERFLOW:????? 899????????? MALLOC_SIZE:????? 168
DATABASES
pgsz???? dbsz?? Lookaside(b)????????? cache? Dbname
4???? 1180???????????? 68??????? 54/55/9? /data/data/com.android.browser/databases/browser2.db
4???? 1180???????????? 25???????? 1/60/2? /data/data/com.android.browser/databases/browser2.db (2)
4???? 1180???????????? 65??????? 90/23/7? /data/data/com.android.browser/databases/browser2.db (1)
4?????? 40???????????? 18???????? 0/15/1? /data/data/com.android.browser/databases/webview.db
Asset Allocations
zip:/system/app/Browser.apk:/resources.arsc: 881K
dumpsys的輸出結(jié)果在不同版本的android系統(tǒng)可能不同。
其中Pss Total是程序占用的PSS。
3.檢查程序狀態(tài)
liuhx@uc ~ $ adb shell cat /proc/939/status
Name:?android.browser
State:?S (sleeping)
Tgid:?939
Pid:?939
PPid:?38
TracerPid:?0
Uid:?10013?10013?10013?10013
Gid:?10013?10013?10013?10013
FDSize:?256
Groups:?1015 1028 3003 50013
VmPeak:?? 215504 kB
VmSize:?? 206780 kB
VmLck:??????? 0 kB
VmHWM:??? 52108 kB
VmRSS:??? 47748 kB
VmData:??? 53616 kB
VmStk:?????? 84 kB
VmExe:??????? 8 kB
VmLib:??? 29300 kB
VmPTE:????? 156 kB
Threads:?29
SigQ:?0/6656
SigPnd:?0000000000000000
ShdPnd:?0000000000000000
SigBlk:?0000000000001204
SigIgn:?0000000000000000
SigCgt:?00000002000094e8
CapInh:?0000000000000000
CapPrm:?0000000000000000
CapEff:?0000000000000000
CapBnd:?fffffffffffffeff
voluntary_ctxt_switches:?451
nonvoluntary_ctxt_switches:?3563
VmRss是程序占用的RSS
4.檢查程序各部分的內(nèi)存占用。
cat /proc/939/smaps
這個命令的輸出結(jié)果很長，下面是一部分結(jié)果：
4b399000-4b39b000 r--p 0001d000 1f:00 560??????? /system/lib/libGLESv1_enc.so
Size:????????????????? 8 kB
Rss:?????????????????? 8 kB
Pss:?????????????????? 8 kB
Shared_Clean:????????? 0 kB
Shared_Dirty:????????? 0 kB
Private_Clean:???????? 0 kB
Private_Dirty:???????? 8 kB
Referenced:??????????? 8 kB
Swap:????????????????? 0 kB
KernelPageSize:??????? 4 kB
MMUPageSize:?????????? 4 kB
4b39b000-4b39c000 rw-p 0001f000 1f:00 560??????? /system/lib/libGLESv1_enc.so
Size:????????????????? 4 kB
Rss:?????????????????? 4 kB
Pss:?????????????????? 4 kB
Shared_Clean:????????? 0 kB
Shared_Dirty:????????? 0 kB
Private_Clean:???????? 0 kB
Private_Dirty:???????? 4 kB
Referenced:??????????? 4 kB
Swap:????????????????? 0 kB
KernelPageSize:??????? 4 kB
MMUPageSize:?????????? 4 kB
總結(jié)
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