Report 📊

Summary

The analysis of the Gradle build performance for the baseline variant (varianta_baseline) and the Kotlin 2.4.21 variant (variantb_kotlin-2.4.21) reveals several key findings. The overall build time for variantb_kotlin-2.4.21 is longer by approximately 19.6 seconds (8.2% increase) compared to varianta_baseline. Specifically, the P50 and P90 build times show increases of 20.2 seconds (7.8%) and 20.6 seconds (7.5%), respectively. Configuration times also increased slightly in the Kotlin 2.4.21 variant by about 1.3 seconds (3.1%). Task execution times for several key tasks, such as KotlinCompile and DexMergingTask, have increased in the Kotlin 2.4.21 variant, contributing to the longer build times. Memory usage saw a slight increase in the Kotlin 2.4.21 variant, with a peak usage of 9.65 GB compared to 9.34 GB in the baseline.

Detailed Report

1. Build Time Comparison

  • Overall Build Time:

    • Mean: Baseline: 238.792s, Kotlin 2.4.21: 258.398s (Increase of 19.606s or 8.2%)
    • P50: Baseline: 257.465s, Kotlin 2.4.21: 277.658s (Increase of 20.193s or 7.8%)
    • P90: Baseline: 275.380s, Kotlin 2.4.21: 295.978s (Increase of 20.598s or 7.5%)

  • Configuration Time:

    • Mean: Baseline: 41.697s, Kotlin 2.4.21: 42.992s (Increase of 1.295s or 3.1%)
    • P50: Baseline: 43.491s, Kotlin 2.4.21: 44.926s (Increase of 1.435s or 3.3%)
    • P90: Baseline: 52.986s, Kotlin 2.4.21: 50.580s (Decrease of 2.406s or -4.5%)

2. Task Type Differences

  • Top Time-Consuming Tasks:
    • "KotlinCompile": Mean time increased from 3.131s to 3.563s (13.8% increase).
    • "DexMergingTask": Mean time increased from 6.484s to 6.837s (5.4% increase).
    • "GlobalSyntheticsGeneratorTask": Mean time increased from 5.478s to 5.790s (5.7% increase).

3. Statistical Patterns

  • Tasks with notable timing variations include "KotlinCompile", "DexMergingTask", and "GlobalSyntheticsGeneratorTask", all showing more than 5% increase in execution times in the Kotlin 2.4.21 variant.

4. CPU & Memory Usage Analysis

  • CPU Usage:

    • All processes: Max CPU usage was 100% for both variants.
    • Build process: Max CPU usage slightly decreased from 95.9% to 95.533%.
    • Build child processes: Max CPU usage decreased from 94.4% to 93.767%.

  • Memory Usage:

    • All processes: Max memory usage increased from 8.8 GB to 9.17 GB.
    • Build processes: Max memory usage slightly decreased from 4.48 GB to 4.45 GB.
    • Build child processes: Max memory usage increased from 3.2 GB to 3.62 GB.

5. Summary

The transition to Kotlin 2.4.21 in variantb_kotlin-2.4.21 has led to an increase in build and configuration times, with significant increases in execution times for several key tasks. Memory usage has also slightly increased, indicating a higher resource demand in the newer Kotlin version. These changes suggest a trade-off between adopting new Kotlin features and the impact on build performance and resource utilization.