Step 1 : Are the Scheme PLT programs faster? At a glance.
This chart shows 3 comparisons - Time-used, Memory-used and Code-used.
Each chart bar shows, for one unidentified benchmark, how much the fastest Scheme PLT program used compared to the fastest Perl program.
Step 2 : Are the Scheme PLT programs faster? Approximately.
This table shows 3 comparisons - Time-used, Memory-used and Code-used.
Each table row shows, for one named benchmark, how much the fastest Scheme PLT program used compared to the fastest Perl program.
| Scheme PLT used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | Reduced N |
| binary-trees | 1/18 | 1/3 | ± | |
| n-body | 1/7 | 5× | ± | |
| fasta | 1/5 | 4× | ± | |
| fannkuch | 1/2 | 2× | ± | |
| mandelbrot | 1/2 | 1/34 | ± | |
| pidigits | ± | 4× | 3× | |
| spectral-norm | ± | ± | 1/2 | |
| regex-dna | 3× | 4× | 2× | |
| k-nucleotide | 4× | 1/2 | ± | |
| reverse-complement | 4× | 3× | 2× | |
± read the measurements and then read the program source code.
Step 3 : Are the Scheme PLT programs faster? Measurements.
This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ~ CPU Load.
For each named benchmark, measurements of the fastest Scheme PLT program are shown for comparison against measurements of the fastest Perl program.
| Program Source Code | CPU secs | Elapsed secs | Memory KB | Code B | ~ CPU Load |
|---|---|---|---|---|---|
| binary-trees | |||||
| Scheme PLT | 71.74 | 71.74 | 253,944 | 503 | 100% 0% 0% 0% |
| Perl | 1,292.44 | 1,292.38 | 643,488 | 541 | 0% 0% 100% 0% |
| n-body | |||||
| Scheme PLT | 269.67 | 269.69 | 9,844 | 1558 | 0% 100% 0% 0% |
| Perl | 1,914.13 | 1,914.02 | 2,128 | 1140 | 0% 0% 0% 100% |
| fasta | |||||
| Scheme PLT | 64.04 | 64.05 | 7,780 | 1053 | 0% 1% 0% 100% |
| Perl | 339.78 | 339.76 | 2,112 | 934 | 100% 0% 0% 0% |
| fannkuch | |||||
| Scheme PLT | 544.15 | 544.12 | 9,176 | 549 | 0% 0% 100% 0% |
| Perl | 4,206.05 | 1,062.52 | 6,020 | 471 | 99% 99% 99% 100% |
| mandelbrot | |||||
| Scheme PLT | 837.50 | 837.84 | 8,572 | 508 | 28% 0% 72% 0% |
| Perl | 5,578.83 | 1,436.69 | 291,628 | 550 | 97% 97% 97% 97% |
| pidigits | |||||
| Scheme PLT | 5.60 | 5.61 | 12,316 | 1131 | 0% 0% 0% 100% |
| Perl | 7.03 | 7.03 | 3,284 | 385 | 0% 0% 0% 100% |
| spectral-norm | |||||
| Scheme PLT | 264.46 | 264.46 | 9,248 | 419 | 0% 0% 0% 100% |
| Perl | 1,212.30 | 304.61 | 7,792 | 846 | 100% 100% 99% 100% |
| regex-dna | |||||
| Scheme PLT | 38.85 | 38.85 | 614,904 | 835 | 93% 0% 7% 7% |
| Perl | 39.07 | 14.23 | 153,584 | 527 | 55% 66% 58% 96% |
| k-nucleotide | |||||
| Scheme PLT | 311.58 | 311.90 | 1,294,924 | 623 | 2% 3% 2% 93% |
| Perl | 281.57 | 88.72 | 2,774,904 | 648 | 78% 73% 88% 83% |
| reverse-complement | |||||
| Scheme PLT | 20.49 | 20.49 | 383,816 | 554 | 100% 0% 0% 0% |
| Perl | 5.78 | 5.79 | 124,036 | 237 | 0% 0% 0% 100% |
| chameneos-redux | |||||
| Scheme PLT | 223.70 | 223.69 | 26,144 | 792 | 45% 57% 0% 0% |
Measurements for all the accepted programs
Scheme PLT : statically-scoped properly tail-recursive dialect of lisp
online book "The Scheme Programming Language, Fourth Edition" by R. Kent Dybvig, 2009.
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