22d92b76bccd6666ea34009310dced62ba79165b - platform_frameworks_base

commit	22d92b76bccd6666ea34009310dced62ba79165b	[log] [tgz]
author	Rajeev Kumar <rajekumar@google.com>	Wed Feb 07 18:38:36 2018 -0800
committer	Rajeev Kumar <rajekumar@google.com>	Thu Feb 15 13:43:55 2018 -0800
tree	8fd742f19c6f7781b37131b625a7b848cbe1d54c
parent	f9a02975eaa5a36584eb1f214193d24053af73f1 [diff]

Implement atom puller for ProcessMemoryState.

We would like to gather memory metrics of the processes when LMKD kills
a process. By gathering this info we would be able to analyze and improve
system health by potentially reducing memory footprint of the processes
contributing to the memory pressure on the device.

This feature would be available on production builds.

Perf analysis:
On an average getMemoryStateForProcesses method call takes
0.59 milli seconds per process.

To know more about this see: http://go/android-p-memory-metrics

Bug: 72177881
Test: Tested manually
Change-Id: Ice94c2d937a5c84bc205981d99588a30f686ff9b

cmds/statsd/src/external/StatsPullerManagerImpl.cpp[diff]
core/java/android/app/ActivityManagerInternal.java[diff]
core/java/android/app/IActivityManager.aidl[diff]
core/java/android/app/ProcessMemoryState.java[Added - diff]
services/core/java/com/android/server/am/ActivityManagerService.java[diff]
services/core/java/com/android/server/am/MemoryStatUtil.java[diff]
services/core/java/com/android/server/stats/StatsCompanionService.java[diff]

7 files changed

tree: 8fd742f19c6f7781b37131b625a7b848cbe1d54c