VW Smalltalk versus Ruby 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 VW Smalltalk 33.65 246,512 1047 111.23 80% 82% 84% 85% Ruby 154.65 26,296 839 603.60 98% 98% 97% 97% mandelbrot source secs mem gz busy cpu load VW Smalltalk 168.51 178,660 929 582.35 87% 96% 75% 88% Ruby 340.43 65,964 931 1,353.94 100% 99% 99% 99% n-body source secs mem gz busy cpu load VW Smalltalk 199.03 54,988 1782 202.03 1% 91% 9% 1% Ruby 376.42 25,112 1137 401.06 92% 2% 4% 9% binary-trees source secs mem gz busy cpu load VW Smalltalk 32.55 375,964 930 83.17 73% 64% 58% 61% Ruby 44.67 531,624 1096 126.74 79% 60% 73% 72% fasta source secs mem gz busy cpu load VW Smalltalk 48.54 55,108 1539 53.76 40% 0% 65% 5% Ruby 51.46 122,960 1069 57.67 20% 22% 47% 23% fannkuch-redux source secs mem gz busy cpu load VW Smalltalk 714.56 55,020 916 722.40 0% 100% 0% 1% Ruby 307.68 26,776 1444 1,190.76 98% 95% 96% 98% pidigits source secs mem gz busy cpu load VW Smalltalk 15.22 55,620 753 15.31 0% 0% 100% 0% Ruby 3.21 369,020 485 5.35 21% 31% 15% 100% k-nucleotide source secs mem gz busy cpu load VW Smalltalk 651.32 381,100 1317 659.29 1% 13% 87% 1% Ruby 106.07 145,640 644 387.67 92% 93% 87% 93% reverse-complement source secs mem gz busy cpu load VW Smalltalk Bad Output Ruby 31.78 511,692 264 34.71 5% 54% 47% 4% regex-redux source secs mem gz busy cpu load No program contribute your program Ruby 15.85 277,116 724 35.00 93% 39% 41% 48% VW Smalltalk VisualWorks® 8.3 Aug 19 2017 Ruby ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux] --jit all VW Smalltalk programs & measurements all Ruby programs & measurements