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80 lines
2.0 KiB
80 lines
2.0 KiB
# Quickstart: Heap profiling
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## Prerequisites
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* [ADB](https://developer.android.com/studio/command-line/adb) installed.
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* A device running Android 10+.
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* A _Profileable_ or _Debuggable_ app. If you are running on a _"user"_ build of
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Android (as opposed to _"userdebug"_ or _"eng"_), your app needs to be marked
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as profileable or debuggable in its manifest.
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See the [heapprofd documentation][hdocs] for more details.
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[hdocs]: /docs/data-sources/native-heap-profiler.md#heapprofd-targets
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## Capture a heap profile
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### Linux / macOS
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Make sure adb is installed and in your PATH.
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```bash
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adb devices -l
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```
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If more than one device or emulator is reported you must select one upfront as follows:
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```bash
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export ANDROID_SERIAL=SER123456
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```
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Download the `tools/heap_profile` (if you don't have a perfetto checkout):
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```bash
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curl -LO https://raw.githubusercontent.com/google/perfetto/master/tools/heap_profile
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chmod +x heap_profile
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```
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Then start the profile:
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```bash
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./heap_profile -n system_server
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```
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### Windows
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Make sure that the downloaded adb.exe is in the PATH.
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```bash
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set PATH=%PATH%;%USERPROFILE%\Downloads\platform-tools
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adb devices -l
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```
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If more than one device or emulator is reported you must select one upfront as follows:
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```bash
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set ANDROID_SERIAL=SER123456
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```
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Download the
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[heap_profile](https://raw.githubusercontent.com/google/perfetto/master/tools/heap_profile)
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script. Then start the profile:
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```bash
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python /path/to/heap_profile -n system_server
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```
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## View profile
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Upload the `raw-trace` file from the output directory to the [Perfetto UI](
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https://ui.perfetto.dev) and click on diamond marker in the UI track labeled
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_"Heap profile"_.
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## Next steps
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Learn more about memory debugging in the [Memory Usage on Android Guide](
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/docs/case-studies/memory.md) and more about the [heapprofd data-source](
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/docs/data-sources/native-heap-profiler.md)
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