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 | 1/10 | 1/2 | ± | |
| spectral-norm | 1/10 | ± | ± | |
| mandelbrot | 1/9 | 3× | 2× | |
| fasta | 1/6 | 5× | ± | |
| fannkuch | 1/5 | 6× | 3× | |
| n-body | 1/3 | 5× | ± | |
| pidigits | ± | 4× | 2× | |
| k-nucleotide | 4× | 1/2 | 4× | |
| reverse-complement | 4× | 4× | 2× | |
| regex-dna | 8× | 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 | 128.55 | 128.64 | 257,612 | 603 | 0% 0% 0% 100% |
| Perl | 1,297.73 | 1,297.68 | 643,488 | 541 | 0% 0% 0% 100% |
| spectral-norm | |||||
| Java 6 -Xint | 117.86 | 117.90 | 10,836 | 950 | 0% 0% 0% 100% |
| Perl | 1,184.33 | 1,184.26 | 7,792 | 846 | 0% 0% 0% 100% |
| mandelbrot | |||||
| Java 6 -Xint | 617.73 | 617.73 | 10,320 | 665 | 0% 0% 0% 100% |
| Perl | 5,268.13 | 5,267.81 | 3,032 | 311 | 0% 0% 0% 100% |
| fasta | |||||
| Java 6 -Xint | 55.77 | 55.81 | 10,148 | 1240 | 0% 0% 0% 100% |
| Perl | 349.59 | 349.57 | 2,112 | 934 | 0% 1% 0% 100% |
| fannkuch | |||||
| Java 6 -Xint | 665.34 | 665.35 | 10,316 | 1150 | 0% 0% 0% 100% |
| Perl | 3,160.50 | 3,160.31 | 1,692 | 391 | 0% 0% 0% 100% |
| n-body | |||||
| Java 6 -Xint | 606.07 | 606.06 | 10,404 | 1424 | 0% 0% 0% 100% |
| Perl | 1,911.92 | 1,911.80 | 2,128 | 1140 | 0% 0% 0% 100% |
| pidigits | |||||
| Java 6 -Xint | 5.52 | 5.56 | 11,584 | 938 | 0% 0% 0% 99% |
| Perl | 7.04 | 7.05 | 3,284 | 385 | 0% 0% 0% 100% |
| k-nucleotide | |||||
| Java 6 -Xint | 969.07 | 969.07 | 299,116 | 1602 | 0% 0% 0% 100% |
| Perl | 249.61 | 252.46 | 709,264 | 359 | 0% 0% 0% 100% |
| reverse-complement | |||||
| Java 6 -Xint | 23.25 | 23.27 | 471,280 | 592 | 0% 0% 0% 100% |
| Perl | 5.80 | 5.80 | 124,036 | 237 | 0% 0% 1% 100% |
| regex-dna | |||||
| Java 6 -Xint | 321.48 | 321.48 | 679,700 | 921 | 0% 0% 0% 100% |
| Perl | 38.84 | 38.84 | 153,472 | 527 | 0% 0% 0% 100% |
| chameneos-redux | |||||
| Java 6 -Xint | 44.54 | 44.55 | 19,920 | 1462 | 0% 0% 0% 100% |
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/