Enhance benchmark statistics with Git/working tree details. Specify byte encoding for JSON to byte encoder.
Add status code check to HttpResultsWriter to verify that the results were accepted. Convert spaces to tabs in pom.xml.
Original pull request: #483.
Run the benchmark via the maven profile "benchmarks":
mvn -P benchmarks clean test
Or run them customized:
mvn -P benchmarks -DwarmupIterations=2 -DmeasurementIterations=5 -Dforks=1 clean test
Origin pull request: #483.
