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[Benchmarks] Set benchmark app to use new architecture by default #997

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Merged
marco-saia-datadog merged 1 commit into from
Oct 13, 2025
Merged

[Benchmarks] Set benchmark app to use new architecture by default #997

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8 changes: 5 additions & 3 deletions benchmarks/README.md
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Expand Up @@ -6,17 +6,19 @@
2. From the iOS folder, run `pod install`.
3. From the root folder, run `yarn ios` or `yarn android`.

## Enable new architecture
## Enable old architecture

The Benchmark app uses React Native's New Architecture by default. However, you may need to switch to the Old Architecture to compare performance between the two systems or reproduce bugs that are specific to legacy environments.

### iOS

```
RCT_NEW_ARCH_ENABLED=1 pod install
RCT_NEW_ARCH_ENABLED=0 pod install
```

### Android

Set `newArchEnabled=true` in `benchmarks/android/gradle.properties`.
Set `newArchEnabled=false` in `benchmarks/android/gradle.properties`.

## ENV config

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2 changes: 1 addition & 1 deletion benchmarks/android/gradle.properties
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Expand Up @@ -32,7 +32,7 @@ reactNativeArchitectures=armeabi-v7a,arm64-v8a,x86,x86_64
# your application. You should enable this flag either if you want
# to write custom TurboModules/Fabric components OR use libraries that
# are providing them.
newArchEnabled=false
newArchEnabled=true

# Use this property to enable or disable the Hermes JS engine.
# If set to false, you will be using JSC instead.
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2 changes: 1 addition & 1 deletion benchmarks/scripts/build-ios-benchmark.sh
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Expand Up @@ -37,7 +37,7 @@ function build_ios_app {

echo export NODE_BINARY=$(command -v node) > ${ROOT}/ios/.xcode.env
rm Podfile.lock || true
pod install --repo-update
RCT_NEW_ARCH_ENABLED=1 pod install --repo-update

# Build & Archive
LOG_PATH="${XCODEBUILD_LOG_PATH:-logs/xcodebuild_full_output_benchmark_runner.log}"
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