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 +1,32 @@
+---
+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
+---
+
+## Performance overhead measurements
+
+You can read the following pages with detailed explanation of how we measure performance overhead of the SDK: [Android][1], [iOS][2].
+
+## Continuous benchmarks
+
+We also have an internal infrastructure of continuous benchmarking. There is an internal set of ui tests that run on a special benchmark application for every change made to the sdk. This way we are able to detect performance regression early and don't allow the corresponding changes to be included in the following release.
+
+You can find the source code of the benchmark app here: [Android][3], [iOS][4].
+
+## Further Reading
+
+{{< partial name="whats-next/whats-next.html" >}}
+
+[1]: https://github.com/DataDog/dd-sdk-android/blob/develop/docs/sdk_performance.md
+[2]: https://github.com/DataDog/dd-sdk-ios/blob/develop/docs/session_replay_performance.md
+[3]: https://github.com/DataDog/dd-sdk-android/tree/develop/sample/benchmark
+[4]: https://github.com/DataDog/dd-sdk-ios/tree/develop/BenchmarkTests

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