Step 1 : Are the Perl programs faster? At a glance.
This chart shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.
Each chart bar shows, for one unidentified benchmark, how much the fastest Perl program used compared to the fastest Java 7 -server program.
Look at speed another way - look at a box plot of Time-used data.
Step 2 : Are the Perl programs faster? Approximately.
This table shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.
Each table row shows, for one named benchmark, how much the fastest Perl program used compared to the fastest Java 7 -server program.
| Perl used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | |
| pidigits | ± | 1/5 | 1/2 | |
| regex-dna | ± | 1/4 | 1/2 | |
| reverse-complement | 2× | ± | 1/3 | |
| k-nucleotide | 7× | 2× | 1/7 | |
| fannkuch-redux | 39× | 1/10 | 1/3 | |
| binary-trees | 42× | 1/2 | ± | |
| fasta | 54× | 1/9 | 1/2 | |
| spectral-norm | 58× | 1/5 | 1/3 | |
| n-body | 64× | 1/7 | ± | |
| mandelbrot | 120× | 1/34 | 1/2 | |
| Perl used what fraction? used how many times more? | |||||||
|---|---|---|---|---|---|---|---|
| Time-used | |- | |--- | 25% | median | 75% | ---| | -| |
| (Elapsed secs) | ± | ± | 2× | 40× | 58× | 120× | 120× |
± read the measurements and then read the program source code.
Step 3 : Are the Perl programs faster? Measurements.
This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ≈ CPU Load ~ speed and size.
For each named benchmark, measurements of the fastest Perl program are shown for comparison against measurements of the fastest Java 7 -server program.
| Program Source Code | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| pidigits | |||||
| Perl | 6.04 | 6.05 | 3,124 | 385 | 0% 0% 0% 100% |
| Java 7 -server | 5.44 | 5.44 | 16,944 | 938 | 0% 0% 0% 100% |
| regex-dna | |||||
| Perl | 30.59 | 30.63 | 139,456 | 527 | 0% 0% 0% 100% |
| Java 7 -server | 21.58 | 21.61 | 557,612 | 1284 | 0% 0% 0% 100% |
| reverse-complement | |||||
| Perl | 3.02 | 3.03 | 374,196 | 284 | 1% 1% 0% 100% |
| Java 7 -server | 1.87 | 1.90 | 511,340 | 745 | 1% 1% 0% 100% |
| k-nucleotide | |||||
| Perl | 226.75 | 229.92 | 708,068 | 359 | 0% 0% 0% 100% |
| Java 7 -server | 33.81 | 33.93 | 336,388 | 2431 | 0% 0% 0% 100% |
| fannkuch-redux | |||||
| Perl | 2,756.98 | 2,757.67 | 1,448 | 457 | 0% 0% 0% 100% |
| Java 7 -server | 71.27 | 71.29 | 13,856 | 1282 | 0% 0% 0% 100% |
| binary-trees | |||||
| Perl | 662.98 | 663.34 | 289,548 | 448 | 0% 0% 0% 100% |
| Java 7 -server | 15.64 | 15.68 | 506,672 | 603 | 0% 0% 0% 100% |
| fasta | |||||
| Perl | 263.41 | 263.93 | 1,708 | 934 | 0% 0% 0% 100% |
| Java 7 -server | 4.92 | 4.92 | 14,828 | 1507 | 1% 0% 0% 100% |
| spectral-norm | |||||
| Perl | 939.56 | 939.79 | 2,768 | 343 | 0% 0% 0% 100% |
| Java 7 -server | 16.21 | 16.21 | 14,860 | 950 | 0% 0% 0% 100% |
| n-body | |||||
| Perl | 1,563.23 | 1,563.63 | 1,972 | 1140 | 0% 0% 0% 100% |
| Java 7 -server | 24.32 | 24.33 | 13,744 | 1424 | 0% 0% 0% 100% |
| mandelbrot | |||||
| Perl | 3,236.67 | 3,237.39 | 1,976 | 370 | 0% 0% 0% 100% |
| Java 7 -server | 26.86 | 26.87 | 67,760 | 796 | 0% 0% 0% 100% |
| fasta-redux | |||||
| Java 7 -server | 0.11 | 0.11 | ? | 1443 | 0% 0% 0% 100% |
Step 4 : Are there other Perl programs for these benchmarks?
Remember - those are just the fastest Perl and Java 7 -server programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Perl.
Maybe one of those other Perl programs is fastest on a different OS/machine.
Step 5 : Are there other faster programs for these benchmarks?
Remember - those are just the fastest Perl and Java 7 -server programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.
Maybe one of those other programs is fastest on a different OS/machine.
Perl : server-side shell & cgi scripts
This is perl 5, version 14, subversion 1 (v5.14.1) built for i686-linux
Compile-time options: PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP PERL_PRESERVE_IVUV USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF
optimize='-O2'
Compare to built for i686-linux-thread-multi
Home Page: http://www.perl.org/
Download: http://www.cpan.org/src/5.0/