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There's some additional setup needed to make sure the devices are all in
the same state, so I added instructions to the README.
I also changed the system_stats functions to use variables to store
string outputs instead of files to avoid collision when running multiple
instances of the script from the same directory.
Finally, I added cleanup at the end to remove the files created in the
process, and some general code cleanup throughout the script.
Bug: 62536649
Test: manual test on several devices
Change-Id: I843a1cefcf6bd11f28e513d735b3bf313442efd2
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The script previously did not configure any framework settings for this
script, so I added commands to disable any features that could affect
the performance numbers like wifi, NFC, screen rotation. It also clears
notifications and starts the device on the home screen.
It's not possible prior to this commit to run the app-launcher on a
host with multiple devices attached to adb, so I added a '-s <serial
number' option that allows the user to specify a specific device based
on its serial number.
I also changed the spacing of the script to be all spaces instead of
mixed tabs and spaces.
Test: Manually ran script on a marlin device
Change-Id: I82c621fe280033c55ba38bfdf95836fd95f5ed58
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app-launcher is an automated tool that automates the launching of
selected Apps (hundreds of times each) and collects system metrics
like CPU util, storage device util, launch times, context switches,
branch mispredicts etc. This is very useful for A/B compares of system
changes in how they impact App Launch. This code was under
google_experimental and was used by various members who found it very
useful, so moving it under system/extras (under userdebug).
Test: I (and others) have used app launcher on multiple occasions over
several months. And comparison of metrics reported by app-launcher are
consistent with metrics reported by other tools, for these tests.
Change-Id: I8b469b4165035a958b155cfffc93341cddcc444c
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
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