F# .NET versus Java fastest performance Always look at the source code. If the fastest programs are hand-written vector instructions, does the host language matter? You might be more interested in the less optimised programs — more seconds, less gz source code. fannkuch-redux source secs mem gz cpu secs F# .NET #6 8.37 31,488 1103 32.55 F# .NET #5 9.84 36,572 927 38.67 Java #3 40.76 42,844 1264 40.83 Java 10.98 42,812 1289 43.36 Java #2 44.03 40,916 520 44.09 F# .NET 91.91 49,912 558 96.68 n-body source secs mem gz cpu secs F# .NET #6 4.97 34,020 1395 4.95 F# .NET #5 5.01 34,008 1363 5.00 Java #5 6.78 41,384 1435 6.82 F# .NET #4 6.88 34,256 1296 6.87 F# .NET #3 6.92 32,088 1624 6.89 Java #4 6.87 41,188 1495 6.91 F# .NET #2 7.39 34,188 1387 7.37 Java #2 7.42 41,308 1430 7.46 Java #3 7.47 41,256 1436 7.51 F# .NET 7.76 49,484 1272 7.82 Java 7.85 41,512 1437 7.89 spectral-norm source secs mem gz cpu secs F# .NET #4 1.62 36,224 738 6.01 Java #3 1.66 42,924 762 6.21 Java 7.07 42,268 521 7.13 Java #2 2.40 42,164 956 9.25 F# .NET #2 Timed Out mandelbrot source secs mem gz cpu secs Java #4 4.45 104,488 667 16.20 Java #2 4.13 83,152 802 16.22 Java #6 4.28 83,056 808 16.84 Java 25.70 41,388 671 25.76 F# .NET #2 7.22 38,032 1054 28.29 Java #3 7.86 83,424 910 30.96 F# .NET #5 Make Error F# .NET Make Error F# .NET #6 Make Error pidigits source secs mem gz cpu secs F# .NET #6 0.97 31,460 917 0.95 Java #3 0.93 40,860 770 0.96 F# .NET #4 1.35 33,388 887 1.37 Java #2 1.34 44,524 944 1.42 Java 7.61 486,236 807 8.69 regex-redux source secs mem gz cpu secs F# .NET #2 4.63 852,508 437 4.87 F# .NET #6 1.76 860,064 622 5.19 F# .NET #7 4.50 1,397,868 610 6.36 Java 8.38 666,804 875 16.42 Java #3 5.17 671,372 935 17.04 Java #6 5.57 1,234,928 746 17.17 F# .NET Bad Output F# .NET #4 Bad Output fasta source secs mem gz cpu secs Java #4 3.15 42,784 1528 3.26 Java #6 1.18 48,408 2549 3.71 Java #5 1.24 48,752 2478 3.81 F# .NET #3 1.14 72,032 1361 4.13 Java #2 4.35 47,184 1259 4.50 F# .NET #4 1.24 90,032 1355 4.62 k-nucleotide source secs mem gz cpu secs Java 5.01 368,104 1821 16.33 F# .NET #2 4.71 198,872 1932 16.34 F# .NET #5 4.92 198,784 1964 16.53 Java #6 7.18 365,592 1614 25.01 Java #3 7.30 365,348 1642 25.39 F# .NET #3 12.07 1,322,292 1124 26.04 F# .NET #4 10.47 1,321,944 1522 26.43 Java #4 34.43 195,584 1887 34.79 Java #5 16.05 219,872 2225 38.17 F# .NET 24.10 1,108,380 713 83.78 F# .NET #6 Make Error reverse-complement source secs mem gz cpu secs Java #6 3.33 2,031,460 760 3.96 Java #5 4.73 1,096,344 1115 4.86 Java #4 5.57 1,889,928 656 5.68 Java #7 23.06 1,036,296 1654 6.31 F# .NET 37.87 1,962,472 603 39.22 F# .NET #4 Timed Out Java #3 Bad Output F# .NET #5 Timed Out Java #8 Bad Output binary-trees source secs mem gz cpu secs Java #4 4.50 2,081,744 846 5.22 Java #3 4.80 2,076,860 546 5.59 Java #6 4.84 2,097,072 535 5.60 Java #2 4.93 2,067,656 558 5.67 Java #7 2.57 1,728,452 841 8.00 F# .NET 10.25 1,214,512 517 12.10 F# .NET #7 5.26 1,671,736 527 15.45 F# .NET .NET SDK 8.0.200 Host Version: 8.0.2 Commit: 1381d5ebd2 <ServerGarbageCollection>true F# 8.0 Java java 22 2024-03-19 Java HotSpot(TM) 64-Bit Server VM (build 22+36-2370, mixed mode, sharing) all F# .NET programs & measurements all Java programs & measurements