Java programs versus C++ g++ by benchmark task performance reverse-complement source secs mem gz cpu cpu load Java 3.15 680,424 2183 7.07 52% 70% 43% 63% C++ g++ 3.08 980,604 2280 4.66 62% 25% 12% 54% k-nucleotide source secs mem gz cpu cpu load Java 8.75 385,056 1812 27.09 85% 72% 70% 85% C++ g++ 7.75 165,180 1276 26.02 80% 96% 82% 79% pidigits source secs mem gz cpu cpu load Java 3.13 36,984 938 3.36 4% 4% 99% 3% C++ g++ 1.88 4,276 513 1.88 0% 100% 1% 0% fasta source secs mem gz cpu cpu load Java 2.27 43,628 2473 5.93 51% 75% 57% 81% C++ g++ 1.35 1,952 2711 4.18 79% 78% 78% 79% fannkuch-redux source secs mem gz cpu cpu load Java 18.27 31,820 1282 72.06 99% 99% 98% 98% C++ g++ 10.61 2,044 980 41.90 100% 96% 100% 100% spectral-norm source secs mem gz cpu cpu load Java 4.38 35,388 950 16.80 96% 96% 95% 97% C++ g++ 2.02 1,332 1044 7.91 99% 99% 99% 99% n-body source secs mem gz cpu cpu load Java 22.17 33,040 1489 22.27 100% 1% 0% 1% C++ g++ 8.23 1,856 1763 8.23 100% 1% 1% 0% binary-trees source secs mem gz cpu cpu load Java 8.39 933,808 835 28.28 82% 86% 84% 88% C++ g++ 2.55 135,568 809 7.99 85% 96% 69% 66% mandelbrot source secs mem gz cpu cpu load Java 6.10 76,520 796 23.59 97% 98% 98% 96% C++ g++ 1.51 25,704 1791 5.99 99% 100% 100% 100% regex-redux source secs mem gz cpu cpu load Java 10.51 573,972 929 31.30 70% 73% 70% 86% C++ g++ 1.61 203,572 1315 4.18 100% 52% 57% 54% Java java 10 2018-03-20 Java(TM) SE Runtime Environment 18.3 (build 10+46) Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10+46, mixed mode) C++ g++ g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0 vs C vs C++ vs C# .NET Core