Summary
The analysis of the Gradle build performance data reveals subtle yet insightful differences between two Kotlin variants, varianta_kotlin_2.1.21
and variantb_kotlin_2.2.0
. The overall build time shows a slight improvement in variantb
by approximately 0.42 seconds (0.4% faster). Notably, the most time-consuming tasks across variants include :layer_0:module_0_1:kspDebugKotlin
, :layer_0:module_0_10:kspDebugKotlin
, and :layer_0:module_0_12:kspDebugKotlin
, with variantb
generally showing marginal increases in execution times. CPU and memory usage are closely matched between the variants, with variantb
showing a slight increase in maximum memory usage by about 0.09 GB. Garbage collection metrics indicate a very similar performance, with total collections slightly lower in variantb
. The Kotlin Build Reports highlight a faster compiler code generation and analysis in variantb
, suggesting efficiency improvements in the newer Kotlin version.
Detailed Report
1. Build Time Comparison
- Mean Build Time:
varianta
575.195s,variantb
572.772s (0.4% faster by 2.423s) - P50 Build Time:
varianta
569.609s,variantb
571.418s - P90 Build Time:
varianta
601.128s,variantb
600.337s
2. Task Type Differences
- Top Tasks:
:layer_0:module_0_1:kspDebugKotlin
has a mean time of 10,011ms invarianta
vs. 10,184ms invariantb
.:layer_0:module_0_10:kspDebugKotlin
shows 9,226ms invarianta
vs. 9,416ms invariantb
.:layer_0:module_0_12:kspDebugKotlin
recorded 7,955ms invarianta
vs. 8,149ms invariantb
.
3. Statistical Patterns
- Notable Variations:
:layer_0:module_0_1:kspDebugKotlin
and:layer_0:module_0_10:kspDebugKotlin
show an increase in execution time invariantb
by about 1.73% and 2.06% respectively, indicating slightly slower performance for these tasks in the newer Kotlin version.
4. CPU & Memory Usage Analysis
- CPU Usage:
- All processes maxed out at 100% CPU usage for both variants.
- Build process CPU usage was nearly identical with a max of 96.325% for
varianta
and 96.4% forvariantb
.
- Memory Usage:
- All processes peaked at 11.27GB for
varianta
and 11.36GB forvariantb
. - Build process memory usage was almost the same, with a slight increase in
variantb
to 4.93GB.
- All processes peaked at 11.27GB for
5. Garbage Collection Analysis
- Total GC Collections:
- Gradle process:
varianta
had 203 collections vs.variantb
with 202 collections. - Kotlin process:
varianta
had 162 collections vs.variantb
with 165 collections.
- Gradle process:
6. Kotlin Build Reports Analysis
- Compiler Performance:
- Code generation lines per second were higher in
variantb
(1090 vs. 1044 invarianta
). - Analysis lines per second also improved in
variantb
(1081 vs. 982 invarianta
).
- Code generation lines per second were higher in
This analysis underscores the nuanced improvements in build performance and efficiency in the newer Kotlin version, variantb_kotlin_2.2.0
, particularly in compiler operations, despite slightly increased execution times for specific tasks.