Examples of using simpleperf to profile android applications
https://android.googlesource.com/platform/system/extras/+/refs/heads/simpleperf-release/simpleperf/
simpleperf stat -e dTLB-loads,dTLB-load-misses,iTLB-loads,iTLB-load-misses,L1-icache-load-misses,page-faults -p pid
Table of Contents
Introduction
Simpleperf is a native profiler used on Android platform. It can be used to profile android applications. It's document is at here. This project is to show examples of using simpleperf to profile android applications. The meaning of each directory is as below:
simpleperf/ -- contain simpleperf binaries and scripts.
SimpleperfExamplePureJava/ -- contains an android studio project using only java code.
SimpleperfExampleWithNative/ -- contains an android studio project using both java/c++ code.
Profiling java application
android studio project: SimpleExamplePureJava
test device: Android O (Google Pixel XL)
test device: Android N (Google Nexus 5X)
steps:
- Build and install app:
# Open SimpleperfExamplesPureJava project with Android studio,
# and build this project sucessfully, otherwise the `./gradlew` command below will fail.
$cd SimpleperfExamplePureJava
$./gradlew clean assemble
$adb install -r app/build/outputs/apk/app-profiling.apk
- Record profiling data:
$cd ../simpleperf
$gvim app_profiler.config
change app_package_name line to: app_package_name = "com.example.simpleperf.simpleperfexamplepurejava"
$python app_profiler.py
It runs the application and collects profiling data in perf.data, binaries on device in binary_cache/.
- Show profiling data:
a. show call graph in txt mode
$bin/linux/x86_64/simpleperf report -g --brief-callgraph | more
If on other hosts, use corresponding simpleperf binary.
b. show call graph in gui mode
$python report.py -g
c. show samples in source code
$gvim annotate.config
change source_dirs line to: source_dirs = ["../SimpleperfExamplePureJava"]
$python annotate.py
$gvim annotated_files/java/com/example/simpleperf/simpleperfexamplepurejava/MainActivity.java
check the annoated source file MainActivity.java.
Profiling java/c++ application
android studio project: SimpleExampleWithNative
test device: Android O (Google Pixel XL)
test device: Android N (Google Nexus 5X)
steps:
- Build and install app:
# Open SimpleperfExamplesPureJava project with Android studio,
# and build this project sucessfully, otherwise the `./gradlew` command below will fail.
$cd SimpleperfExampleWithNative
$./gradlew clean assemble
$adb install -r app/build/outputs/apk/app-profiling.apk
- Record profiling data:
$cd ../simpleperf
$gvim app_profiler.config
change app_package_name line to: app_package_name = "com.example.simpleperf.simpleperfexamplewithnative"
$python app_profiler.py
It runs the application and collects profiling data in perf.data, binaries on device in binary_cache/.
- Show profiling data:
a. show call graph in txt mode
$bin/linux/x86_64/simpleperf report -g --brief-callgraph | more
If on other hosts, use corresponding simpleperf binary.
b. show call graph in gui mode
$python report.py -g
c. show samples in source code
$gvim annotate.config
change source_dirs line to: source_dirs = ["../SimpleperfExampleWithNative"]
$python annotate.py
$gvim annotated_files/home/yabinc/AndroidStudioProjects/simpleperf_demo/SimpleperfExampleWithNative/app/src/main/cpp/native-lib.cpp
check the annoated source file native-lib.cpp.