Racket versus Python 3 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. spectral-norm source secs mem gz busy cpu load Racket 2.90 40,688 627 10.89 93% 93% 93% 97% Python 3 118.40 22,912 407 470.86 99% 99% 99% 100% n-body source secs mem gz busy cpu load Racket 25.38 38,392 1689 25.92 100% 0% 1% 1% Python 3 586.17 8,012 1196 589.84 0% 0% 0% 100% mandelbrot source secs mem gz busy cpu load Racket 13.74 120,776 801 52.59 96% 96% 96% 95% Python 3 172.58 12,216 688 689.62 100% 100% 100% 100% binary-trees source secs mem gz busy cpu load Racket 6.87 987,244 853 17.30 80% 53% 41% 77% Python 3 49.35 278,628 589 174.26 95% 86% 86% 86% fannkuch-redux source secs mem gz busy cpu load Racket 51.89 35,336 1101 205.05 99% 100% 100% 96% Python 3 367.49 12,288 950 1,454.68 100% 98% 99% 98% fasta source secs mem gz busy cpu load Racket 9.60 40,052 1280 9.90 1% 2% 100% 1% Python 3 39.10 846,628 1947 70.52 43% 8% 61% 69% pidigits source secs mem gz busy cpu load Racket 1.02 36,924 1136 1.04 99% 3% 0% 0% Python 3 1.28 12,336 567 1.30 1% 0% 1% 100% k-nucleotide source secs mem gz busy cpu load Racket 52.28 417,576 885 53.32 0% 1% 100% 1% Python 3 46.37 239,472 1967 176.69 94% 95% 98% 94% reverse-complement source secs mem gz busy cpu load Racket 9.80 566,208 1030 10.18 1% 1% 2% 100% Python 3 7.16 1,005,968 814 10.65 20% 53% 47% 29% regex-redux source secs mem gz busy cpu load Racket 15.65 1,256,208 729 38.29 78% 65% 2% 99% Python 3 1.36 112,052 1403 2.64 40% 88% 32% 33% Racket Welcome to Racket v7.9 [bc]. Python 3 Python 3.9.0 all Racket programs & measurements all Python 3 programs & measurements