commit 629198100836ab3754d130c5867a5ab8c96bc775
author Sebastian Ene <sebastianene@google.com> Tue Oct 04 08:53:30 2022 +0000
committer Sebastian Ene <sebastianene@google.com> Thu Oct 13 13:49:14 2022 +0000
tree ce0a878b2bb51b6373b30b553786970cc859b82c
parent fb46ee1dc1d3fe3799ddfd2b7ad224472fca537f

Measure app startup impact after VM teardown

Add a host side test as part of MicrodroidTestCase which starts a
Microdroid VM that reserves 80% of the device's memory reported from
/proc/meminfo (MemFree - field) and touches all the allocated guest
memory with a tmpfs filesystem and successive copies from /dev/zero.
This step is necessary to create host stage2 fragmentation and we
measure a cold app startup time delta before and after we tear-down
the VM.

The following metrics will be reported during atest
AVFHostTestCase#testAppStartupTime:

app_startup/com.android.settings/total_time/before_vm
app_startup/com.android.settings/wait_time/before_vm
app_startup/com.android.settings/total_time/during_vm
app_startup/com.android.settings/wait_time/during_vm
app_startup/com.android.settings/total_time/after_vm
app_startup/com.android.settings/wait_time/after_vm

Bug: 236621823
Test: Verified localy using atest
Change-Id: Iede9d6f0507c8d7e56b3e32324441ff11e54fa1e