Go versus C++ g++ fastest programs Always look at the source code. These are only the fastest programs. Look at the other programs. They may seem more-like a fair comparison to you. pidigits source secs mem gz busy cpu load Go 2.04 8,724 603 2.36 20% 32% 33% 31% C++ g++ 1.82 4,312 513 1.87 1% 1% 2% 100% fannkuch-redux source secs mem gz busy cpu load Go 14.93 3,484 969 59.67 100% 100% 100% 100% C++ g++ 10.71 1,708 980 42.33 100% 96% 100% 100% fasta source secs mem gz busy cpu load Go 2.11 4,228 1358 5.66 69% 65% 64% 70% C++ g++ 1.46 2,024 2711 4.40 75% 76% 75% 76% reverse-complement source secs mem gz busy cpu load Go 3.73 826,488 611 4.10 88% 6% 2% 14% C++ g++ 1.89 499,672 2093 1.94 100% 2% 1% 1% spectral-norm source secs mem gz busy cpu load Go 4.12 2,704 548 15.93 96% 98% 97% 96% C++ g++ 1.99 2,408 1044 7.89 99% 99% 99% 99% n-body source secs mem gz busy cpu load Go 21.26 1,888 1310 22.28 3% 0% 100% 2% C++ g++ 7.70 1,612 1879 7.81 100% 0% 1% 1% k-nucleotide source secs mem gz busy cpu load Go 12.67 150,584 1722 47.44 95% 90% 93% 96% C++ g++ 3.88 156,164 1631 12.09 72% 92% 71% 77% mandelbrot source secs mem gz busy cpu load Go 5.55 30,300 894 22.11 99% 99% 99% 100% C++ g++ 1.51 26,256 1791 6.01 100% 99% 99% 99% regex-redux source secs mem gz busy cpu load Go 7.21 326,552 810 10.19 22% 18% 87% 14% C++ g++ 1.86 203,856 1315 4.49 99% 50% 48% 44% binary-trees source secs mem gz busy cpu load Go 25.19 397,116 1007 86.01 88% 86% 84% 83% C++ g++ 3.96 113,236 809 12.86 74% 84% 98% 69% Go go version go1.14 linux/amd64 C++ g++ g++ (Ubuntu 9.3.0-10ubuntu2) 9.3.0 all Go programs & measurements all C++ g++ programs & measurements