???????????????????????

???????adb shell procrank????????VSS??RSS??USS??PSS
????VSS – Virtual Set Size ?????????棨???????????????棩
????RSS – Resident Set Size ????????????棨???????????????棩
????PSS – Proportional Set Size ?????????????棨???????乲?????????棩
????USS – Unique Set Size ?????????????????棨?????????????????棩
?????????????????С?????1????VSS >= RSS >= PSS >= USS
????????USS??????procrank?????????????????libpagemap.so?? procmem?? procrank?????push??android????С??е?root????????????????????????????

????4??  ???ADT???DDMS???????MAT???з???
????????DDMS??Heap??????????app???????????????app?????????DDMS?????Devices?￡???????????????е?App????????????App?????????????????Update Heap?????????

??????Heap????????Cause GC??????????????????????????????