Step 1 : Are the Java 6 -Xint 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 Java 6 -Xint program used compared to the fastest Perl program.
Step 2 : Are the Java 6 -Xint 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 Java 6 -Xint program used compared to the fastest Perl program.
| Java 6 -Xint used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | Reduced N |
| binary-trees | 1/11 | 1/2 | ± | |
| spectral-norm | 1/10 | ± | ± | |
| mandelbrot | 1/7 | 1/6 | 2× | |
| fasta | 1/6 | 5× | ± | |
| fannkuch | 1/6 | 2× | 2× | |
| n-body | 1/3 | 5× | ± | |
| pidigits | ± | 4× | 2× | |
| k-nucleotide | 3× | 1/9 | 2× | |
| reverse-complement | 4× | 4× | 2× | |
| regex-dna | 10× | 4× | 2× | |
± read the measurements and then read the program source code.
Step 3 : Are the Java 6 -Xint 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 Java 6 -Xint 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 | |||||
| Java 6 -Xint | 132.08 | 119.49 | 289,060 | 603 | 7% 91% 7% 6% |
| Perl | 1,292.44 | 1,292.38 | 643,488 | 541 | 0% 0% 100% 0% |
| spectral-norm | |||||
| Java 6 -Xint | 117.30 | 29.54 | 10,840 | 950 | 99% 99% 99% 99% |
| Perl | 1,212.30 | 304.61 | 7,792 | 846 | 100% 100% 99% 100% |
| mandelbrot | |||||
| Java 6 -Xint | 857.62 | 214.66 | 47,108 | 903 | 100% 100% 100% 100% |
| Perl | 5,578.83 | 1,436.69 | 291,628 | 550 | 97% 97% 97% 97% |
| fasta | |||||
| Java 6 -Xint | 55.80 | 55.84 | 10,156 | 1240 | 0% 0% 100% 0% |
| Perl | 339.78 | 339.76 | 2,112 | 934 | 100% 0% 0% 0% |
| fannkuch | |||||
| Java 6 -Xint | 663.52 | 184.98 | 10,308 | 1150 | 81% 78% 100% 96% |
| Perl | 4,206.05 | 1,062.52 | 6,020 | 471 | 99% 99% 99% 100% |
| n-body | |||||
| Java 6 -Xint | 576.65 | 576.54 | 10,404 | 1424 | 0% 75% 0% 25% |
| Perl | 1,914.13 | 1,914.02 | 2,128 | 1140 | 0% 0% 0% 100% |
| pidigits | |||||
| Java 6 -Xint | 5.52 | 5.52 | 11,604 | 938 | 0% 0% 0% 100% |
| Perl | 7.03 | 7.03 | 3,284 | 385 | 0% 0% 0% 100% |
| k-nucleotide | |||||
| Java 6 -Xint | 1,062.49 | 297.28 | 299,196 | 1602 | 85% 86% 86% 100% |
| Perl | 281.57 | 88.72 | 2,774,904 | 648 | 78% 73% 88% 83% |
| reverse-complement | |||||
| Java 6 -Xint | 22.91 | 22.92 | 471,268 | 592 | 0% 0% 100% 0% |
| Perl | 5.78 | 5.79 | 124,036 | 237 | 0% 0% 0% 100% |
| regex-dna | |||||
| Java 6 -Xint | 353.98 | 147.97 | 682,692 | 929 | 55% 76% 63% 47% |
| Perl | 39.07 | 14.23 | 153,584 | 527 | 55% 66% 58% 96% |
| chameneos-redux | |||||
| Java 6 -Xint | 43.53 | 14.27 | 10,508 | 1377 | 62% 54% 90% 89% |
Measurements for all the accepted programs
Java 6 -Xint : ubiquitous bytecode interpreter virtual machine
java version "1.6.0_16"
Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
Java HotSpot(TM) Server VM (build 14.2-b01, interpreted mode)
Home Page: http://java.sun.com/j2se/
Download: http://java.sun.com/j2se/downloads/