This project contains aims to benchmark and compare Java 8, Java 17, Java 21, and Java 24. The benchmarks cover common programming scenarios including stream processing, string operations, file I/O, concurrent processing, and memory operations.
- Stream Processing: Measures performance of sequential stream operations
- Parallel Stream Processing: Tests parallel stream performance
- String Concatenation: Evaluates string concatenation efficiency
- Sorting: Measures collection sorting performance
- File I/O: Tests file read/write operations
- Concurrent Processing: Evaluates multi-threaded computation
- Memory Allocation: Measures memory allocation performance
- Sdkman with Java 8, Java 17, Java 21, and Java 24 (maybe you could change the path of your skd man in
run_benchmarks.py) - Maven
The results will be saved in benchmark-results.json in the project root directory.
The benchmarks are configured with the following parameters:
- Warmup: 2 iterations
- Measurement: 3 iterations
- Fork: 1
- JVM args: -Xms1g -Xmx1g
- Time Unit: Microseconds
- Benchmark Mode: Average Time
The benchmark results are output in JSON format and include:
- Average execution time for each operation
- Standard deviation
- Sample size
- Score error
The graph above shows the performance comparison between Java 17, Java 21, and Java 24 across different benchmark types. Key observations:
- Sorting operations show the highest time consumption across all versions
- Java 21 shows slightly higher sorting times compared to Java 17 and Java 24
- Stream processing, concurrent processing, and other operations show relatively similar performance across versions