Report 📊

Summary

The analysis of the Gradle build performance data reveals that the transition from varianta_baseline to variantb_gradle-9.8.1 generally results in a slight improvement in build performance. The overall build time decreased by approximately 9 seconds (3.6%) from an average of 255.8 seconds in varianta_baseline to 246.6 seconds in variantb_gradle-9.8.1. Configuration times also saw a reduction, decreasing by about 1.5 seconds (3.1%). Notably, the :app:app:mergeExtDexDebug task showed a significant reduction in execution time, dropping by around 522 seconds (2.9%) in the P90 metric. CPU and memory usage across all processes remained stable with no significant changes, indicating that the performance improvements are likely due to optimizations in the build process rather than changes in resource usage.

Detailed Report

1. Build Time Comparison

  • Overall Build Time:

    • Mean: Reduced from 255.8 seconds to 246.6 seconds (3.6% decrease).
    • P50: Reduced from 272.3 seconds to 261.7 seconds (3.9% decrease).
    • P90: Slightly increased from 289.6 seconds to 289.7 seconds (0.03% increase).

  • Configuration Time:

    • Mean: Reduced from 47.5 seconds to 45.97 seconds (3.1% decrease).
    • P50: Reduced from 48.3 seconds to 46.4 seconds (3.9% decrease).
    • P90: Reduced from 59.0 seconds to 55.8 seconds (5.4% decrease).

2. Task Type Differences

  • Top 3 Time-Consuming Tasks:
    • "org.jetbrains.kotlin.gradle.tasks.KotlinCompile": Mean time reduced from 3.27 seconds to 3.14 seconds.
    • "com.google.devtools.ksp.gradle.KspAATask": Mean time reduced from 2.48 seconds to 2.41 seconds.
    • "com.android.build.gradle.internal.tasks.GlobalSyntheticsGeneratorTask": Mean time slightly increased from 5.63 seconds to 5.64 seconds.

3. Statistical Patterns

  • Tasks with notable timing variations:
    • "com.android.build.gradle.internal.tasks.DexMergingTask" showed a slight increase in P90 from 19.97 seconds to 20.02 seconds.
    • "com.android.build.gradle.internal.tasks.ValidateSigningTask" showed an increase in P90 from 2.78 seconds to 2.90 seconds.

5. CPU & Memory Usage Analysis

  • CPU Usage:

    • All processes: Max CPU usage remained at 100% for both variants.
    • Build process: Slight increase in mean CPU usage from 95.6% to 95.87%.
    • Build child processes: Slight increase in mean CPU usage from 93.6% to 93.93%.

  • Memory Usage:

    • All processes: Max memory usage decreased slightly from 8.87 GB to 8.78 GB.
    • Build process: Max memory usage decreased from 4.58 GB to 4.52 GB.
    • Build child processes: Max memory usage decreased from 3.19 GB to 3.13 GB.

Overall, the transition to variantb_gradle-9.8.1 shows a modest improvement in build performance, particularly in build and configuration times, with minimal changes in resource consumption.