There is a tool Memory Monitor to analyze the memory allocation as time goes by, the figure it generates like below:
I just cannot find the tool like "Memory Monitor". Where can i find it?
To open the Memory Profiler, follow these steps: Click View > Tool Windows > Profiler (you can also click Profile in the toolbar). Select the device and app process you want to profile from the Android Profiler toolbar.
Tap Settings > About Phone > RAM to view the amount of RAM your phone has. Tap Settings > About Phone > Build Version several times to activate Developer Options to view advanced RAM info. Close unnecessary apps and widgets to free up RAM quickly.
The algorithm that the Android OS uses figures out which apps you use frequently and keeps those apps in the memory for faster performance—they will load much quicker next time you need them. The system then removes the rest from the memory whenever more RAM is required for some other task.
Since this tool location seems to have changed over time (as the Android Monitoring suite of tools grows), here's a breakdown for selected Android Studio versions (if you want to add a version that's missing, feel free to suggest an edit to this answer to include it!)
IDE access (bottom left, now grouped with other monitors in the Monitor tab):
Menu access:
View -> Tool Windows -> Android Monitor
IDE access (bottom left):
Menu access:
View -> Tool Windows -> Android Monitor
and then select the Memory tab.
IDE access (bottom right):
Menu access:
Tools -> Android -> Memory Monitor
or
View -> Tool Windows -> Memory Monitor
In the latest Android Studio version (i'm using the Canary channel) ver 1.3 the Memory Monitor is located under the Android tab at the bottom --> memory.
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