Go 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 Go #3 8.33 19,664 975 33.25 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 Go 11.74 19,664 906 46.77 Go #2 11.79 19,664 903 46.97 n-body source secs mem gz cpu secs Go #3 6.37 19,808 1207 6.38 Java #5 6.78 41,384 1435 6.82 Java #4 6.87 41,188 1495 6.91 Go 7.00 19,680 1316 7.02 Go #2 7.02 19,680 1222 7.03 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 spectral-norm source secs mem gz cpu secs Go 5.32 19,824 417 5.33 Go #2 1.53 19,824 674 5.67 Go #4 1.44 19,824 555 5.67 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 mandelbrot source secs mem gz cpu secs Go #4 3.76 35,328 912 14.92 Go #3 3.76 35,456 900 14.94 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 Go 5.01 33,408 829 19.98 Java 25.70 41,388 671 25.76 Go #2 6.85 33,152 843 27.29 Go #6 6.89 32,768 707 27.40 Java #3 7.86 83,424 910 30.96 pidigits source secs mem gz cpu secs Java #3 0.93 40,860 770 0.96 Go #4 0.95 19,808 689 0.97 Go 1.35 19,696 715 1.37 Java #2 1.34 44,524 944 1.42 Go #3 1.58 19,824 610 1.62 Go #2 2.13 19,824 740 2.19 Go #8 2.49 19,696 727 2.50 Go #7 5.12 19,824 702 5.88 Java 7.61 486,236 807 8.69 regex-redux source secs mem gz cpu secs Go #5 3.17 320,972 817 5.38 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 Go #4 14.51 368,680 832 34.26 Go 25.58 345,472 749 61.95 Go #3 25.72 402,968 836 62.19 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 Go 3.73 19,804 1055 3.74 Java #5 1.24 48,752 2478 3.81 Go #2 1.26 19,672 1405 4.03 Go #3 1.50 19,664 1362 4.08 Java #2 4.35 47,184 1259 4.50 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 Go #7 7.52 162,944 1613 28.68 Go #6 8.17 145,152 1596 29.90 Go #3 8.38 145,152 1729 30.32 Go #4 9.07 139,904 1552 30.33 Java #4 34.43 195,584 1887 34.79 Java #5 16.05 219,872 2225 38.17 reverse-complement source secs mem gz cpu secs Go #2 2.21 802,176 614 2.30 Go #3 2.47 802,048 609 2.56 Go #6 1.84 1,249,840 1340 3.30 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 Go #5 Bad Output Go Failed 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 Java #7 2.57 1,728,452 841 8.00 Go #6 27.61 404,608 618 29.03 Go #2 13.87 601,252 672 55.04 Go #5 14.37 308,092 957 56.80 Go #3 14.86 323,544 806 57.39 Go 30.97 262,396 488 57.95 Go #7 33.10 292,588 531 61.68 Go go version go1.22.0 linux/amd64 GOAMD64=v2 Java java 22 2024-03-19 Java HotSpot(TM) 64-Bit Server VM (build 22+36-2370, mixed mode, sharing) all Go programs & measurements all Java programs & measurements