Free Pascal versus Java 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 3.06 132,852 1003 10.34 100% 89% 70% 80% Java 8.32 953,620 835 28.37 95% 87% 81% 77% regex-redux source secs mem gz busy cpu load Free Pascal 3.88 103,124 1503 5.35 15% 15% 93% 14% Java 10.31 644,560 740 31.47 72% 72% 92% 70% pidigits source secs mem gz busy cpu load Free Pascal 1.73 2,436 530 1.80 99% 1% 1% 2% Java 3.07 39,320 938 3.31 2% 5% 3% 98% spectral-norm source secs mem gz busy cpu load Free Pascal 3.98 1,912 542 15.84 99% 99% 99% 99% Java 4.22 36,948 950 16.43 98% 97% 98% 96% n-body source secs mem gz busy cpu load Free Pascal 22.36 8 1325 22.46 0% 100% 0% 0% Java 21.93 35,408 1429 22.44 1% 0% 100% 1% mandelbrot source secs mem gz busy cpu load Free Pascal 8.52 29,120 974 34.00 100% 100% 100% 100% Java 6.83 79,108 796 26.86 97% 99% 99% 99% fannkuch-redux source secs mem gz busy cpu load Free Pascal 17.95 1,860 1050 71.73 100% 100% 100% 100% Java 14.33 34,888 1282 56.56 99% 98% 99% 98% reverse-complement source secs mem gz busy cpu load Free Pascal 7.86 499,600 771 7.93 0% 1% 1% 100% Java 3.16 712,368 2183 7.08 65% 47% 42% 70% fasta source secs mem gz busy cpu load Free Pascal 10.23 8 1220 10.42 100% 1% 1% 0% Java 2.22 45,172 2473 5.99 61% 50% 98% 60% k-nucleotide source secs mem gz busy cpu load No program contribute your program Java 9.33 447,976 1812 29.36 73% 83% 82% 77% Free Pascal Free Pascal Compiler version 3.0.4 [2017/10/03] for x86_64 Java openjdk 13 2019-09-17 OpenJDK Runtime Environment (build 13+33) OpenJDK 64-Bit Server VM (build 13+33, mixed mode, sharing) all Free Pascal programs & measurements all Java programs & measurements