Racket 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 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 Racket #2 113.80 76,180 916 113.79 Racket #3 30.20 77,300 1109 114.95 Racket 145.19 75,048 655 145.18 n-body source secs mem gz cpu secs Java #5 6.78 41,384 1435 6.82 Java #4 6.87 41,188 1495 6.91 Java #2 7.42 41,308 1430 7.46 Java #3 7.47 41,256 1436 7.51 Java 7.85 41,512 1437 7.89 Racket #2 14.23 78,496 1695 14.23 Racket 40.72 78,124 1503 40.71 spectral-norm source secs mem gz cpu secs 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 Racket #3 3.94 76,456 639 14.82 Racket #2 15.07 75,004 539 15.07 Racket 29.59 76,644 452 29.59 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 Java #3 7.86 83,424 910 30.96 Racket #3 34.73 76,156 808 34.73 Racket #4 10.56 135,104 810 41.33 Racket 49.27 75,972 524 49.27 Racket #2 51.25 73,732 592 51.25 pidigits source secs mem gz cpu secs Java #3 0.93 40,860 770 0.96 Racket #2 1.34 79,072 1142 1.34 Java #2 1.34 44,524 944 1.42 Java 7.61 486,236 807 8.69 Racket 10.38 78,084 459 10.38 regex-redux source secs mem gz cpu secs 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 Racket 23.80 1,294,036 548 23.80 Racket #2 13.97 1,545,628 736 25.59 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 Java #2 4.35 47,184 1259 4.50 Racket #3 8.07 76,708 1291 8.07 Racket 18.32 74,776 1071 18.31 k-nucleotide source secs mem gz cpu secs Java 5.01 368,104 1821 16.33 Java #6 7.18 365,592 1614 25.01 Java #3 7.30 365,348 1642 25.39 Java #4 34.43 195,584 1887 34.79 Java #5 16.05 219,872 2225 38.17 Racket #4 63.67 926,924 893 63.66 Racket 200.38 2,438,152 554 198.38 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 Racket #2 8.99 783,600 1038 8.98 Racket 40.99 2,047,504 560 40.99 Java #3 Bad Output 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 Racket #3 6.79 300,316 480 6.79 Java #7 2.57 1,728,452 841 8.00 Racket #2 9.00 323,828 422 9.00 Racket #4 4.77 408,068 861 9.38 Racket 15.80 544,844 482 15.79 Racket Racket v8.12 [cs]. Java java 22 2024-03-19 Java HotSpot(TM) 64-Bit Server VM (build 22+36-2370, mixed mode, sharing) all Racket programs & measurements all Java programs & measurements