RUM-10726: Add more info about mobile sdk benchmarking

Author: aleksandr-gringauz

config/_default/menus/main.en.yaml

@@ -7524,6 +7524,11 @@ menu:
       parent: rum_mobile_android
       identifier: rum_mobile_android_troubleshooting
       weight: 110
+    - name: Performance overhead
+      url: real_user_monitoring/mobile_and_tv_monitoring/android/performance_overhead
+      parent: rum_mobile_android
+      identifier: rum_mobile_android_performance_overhead
+      weight: 111
     - name: iOS and tvOS
       url: real_user_monitoring/mobile_and_tv_monitoring/ios
       parent: mobile_and_tv_monitoring

content/en/real_user_monitoring/mobile_and_tv_monitoring/android/_index.md

@@ -34,4 +34,5 @@ To get started with RUM for Android, create an application and configure the And
   {{< nextlink href="/real_user_monitoring/mobile_and_tv_monitoring/android/troubleshooting">}}
   <u>Troubleshooting</u>: Common troubleshooting Android SDK issues.{{< /nextlink >}}
   {{< nextlink href="/real_user_monitoring/mobile_and_tv_monitoring/android/jetpack_compose_instrumentation">}}<u>Jetpack Compose Instrumentation</u>: Instrument Jetpack Compose manually or automatically using the Datadog Gradle Plugin. {{< /nextlink >}}
+{{< nextlink href="/real_user_monitoring/mobile_and_tv_monitoring/android/performance_overhead">}}<u>Performance overhead</u>: Learn about how SDK impacts performance of your application. {{< /nextlink >}}
 {{< /whatsnext >}}

content/en/real_user_monitoring/mobile_and_tv_monitoring/android/performance_overhead.md

@@ -0,0 +1,50 @@
+---
+title: Performance overhead
+description: Learn about how SDK impacts performance of your application.
+aliases:
+- /real_user_monitoring/mobile_and_tv_monitoring/performance_overhead/android
+further_reading:
+- link: https://github.com/DataDog/dd-sdk-android
+  tag: "Source Code"
+  text: dd-sdk-android Source code
+- link: /real_user_monitoring
+  tag: Documentation
+  text: Explore Real User Monitoring
+---
+
+## Overview
+
+Some benchmarks.
+
+## Check if Datadog RUM is initialized
+Use the utility method `isInitialized` to check if the SDK is properly initialized:
+
+```kotlin
+if (Datadog.isInitialized()) {
+    // your code here
+}
+```
+
+## Debugging
+When writing your application, you can enable development logs by calling the `setVerbosity` method. All internal messages in the library with a priority equal to or higher than the provided level are then logged to Android's Logcat:
+
+```kotlin
+Datadog.setVerbosity(Log.INFO)
+```
+
+## Migrating to 2.0.0
+
+If you've been using the SDK v1, there are some breaking changes introduced in version `2.0.0`. See the [migration guide][2] for more information.
+
+## "Deobfuscation failed" warning
+
+A warning appears when deobfuscation fails for a stack trace. If the stack trace is not obfuscated to begin with, you can ignore this warning. Otherwise, use the [RUM Debug Symbols page][3] to view all your uploaded mapping files. See [Investigate Obfuscated Stack Traces with RUM Debug Symbols][4].
+
+## Further Reading
+
+{{< partial name="whats-next/whats-next.html" >}}
+
+[1]: /help
+[2]: https://github.com/DataDog/dd-sdk-android/blob/develop/MIGRATION.MD
+[3]: https://app.datadoghq.com/source-code/setup/rum
+[4]: /real_user_monitoring/guide/debug-symbols

content/en/real_user_monitoring/session_replay/mobile/app_performance.md

@@ -36,8 +36,13 @@ To minimize the total upload volume, Datadog employs a highly optimized wire for
 ## Application size
 Datadog's SDK follows strict standards and aims to minimize the inclusion of third-party dependencies. This approach ensures that the SDK leverages as much native framework code as possible. On Android, the binary size produced by Datadog's own code in the AAR package is 480 kB. See more information on the application size impact [here][1]. On iOS, the size of exported `*.ipa` file will be higher by approximately 200 kB.
 
+## Benchmarks
+For more detailed description of how Session Replay performance overhead was measured you can visit the following pages: [Android][2], [iOS][3].
+
 ## Further reading
 
 {{< partial name="whats-next/whats-next.html" >}}
 
-[1]: https://github.com/DataDog/dd-sdk-android/blob/develop/docs/sdk_performance.md?plain=1#L119
+[1]: https://github.com/DataDog/dd-sdk-android/blob/develop/docs/sdk_performance.md?plain=1#L119
+[2]: https://github.com/DataDog/dd-sdk-android/blob/develop/docs/sdk_performance.md#session-relay-performance-measurement
+[3]: https://github.com/DataDog/dd-sdk-ios/blob/develop/docs/session_replay_performance.md