.. Generate measurements file git clone git@github.com:gunnarmorling/1brc.git cd 1brc ./mvnw clean verify ./create_measurements.sh 100000000 mv measurements.txt /root/of/this/repo Build and Run Tests cd dflib-1-1/ mvnd clean package time java -Xms8g -Xmx8g -jar target/dflib-1-1-*.jar ../measurements.txt cd dflib-2-0/ mvnd clean package time java -Xms8g -Xmx8g -jar target/dflib-2-0-*.jar ../measurements.txt cd dataframe-ec-1-0/ mvnd clean package time java -Xms8g -Xmx8g -jar target/dataframe-ec-1-0-*.jar ../measurements.txt Profiling https://github.com/async-profiler/async-profiler