Free Pascal 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. binary-trees source secs mem gz busy cpu load Free Pascal 3.08 132,800 953 9.94 100% 73% 82% 68% C++ g++ 3.96 113,236 809 12.86 74% 84% 98% 69% pidigits source secs mem gz busy cpu load Free Pascal 1.73 2,324 530 1.77 0% 1% 1% 100% C++ g++ 1.82 4,312 513 1.87 1% 1% 2% 100% fannkuch-redux source secs mem gz busy cpu load Free Pascal 17.33 1,880 1050 69.22 100% 100% 100% 100% C++ g++ 10.71 1,708 980 42.33 100% 96% 100% 100% spectral-norm source secs mem gz busy cpu load Free Pascal 3.99 1,804 542 15.87 99% 100% 99% 100% C++ g++ 1.99 2,408 1044 7.89 99% 99% 99% 99% n-body source secs mem gz busy cpu load Free Pascal 21.79 8 1325 21.99 100% 1% 0% 0% C++ g++ 7.70 1,612 1879 7.81 100% 0% 1% 1% reverse-complement source secs mem gz busy cpu load Free Pascal 6.84 495,112 771 6.94 70% 1% 1% 30% C++ g++ 1.89 499,672 2093 1.94 100% 2% 1% 1% mandelbrot source secs mem gz busy cpu load Free Pascal 8.48 29,788 974 33.85 100% 100% 100% 100% C++ g++ 1.51 26,256 1791 6.01 100% 99% 99% 99% fasta source secs mem gz busy cpu load Free Pascal 10.14 8 1220 10.29 13% 0% 0% 88% C++ g++ 1.46 2,024 2711 4.40 75% 76% 75% 76% regex-redux source secs mem gz busy cpu load Free Pascal Failed C++ g++ 1.86 203,856 1315 4.49 99% 50% 48% 44% k-nucleotide source secs mem gz busy cpu load No program contribute your program C++ g++ 3.88 156,164 1631 12.09 72% 92% 71% 77% Free Pascal Free Pascal Compiler version 3.2.0 [2020/06/14] for x86_64 C++ g++ g++ (Ubuntu 9.3.0-10ubuntu2) 9.3.0 all Free Pascal programs & measurements all C++ g++ programs & measurements