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 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
 spectral-norm1/12±±
 binary-trees1/111/2±
 mandelbrot1/916×
 n-body1/6±
 fasta1/6±
 fannkuch1/4
 pidigits±
 k-nucleotide1/2
 reverse-complement±
 regex-dna

± 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
 spectral-norm 
Java 6 -Xint93.0093.0212,944950  3% 0% 0% 100%
Perl1,094.721,094.6511,060846  0% 0% 0% 100%
 binary-trees 
Java 6 -Xint131.42131.49547,096603  0% 0% 0% 100%
Perl1,490.641,490.581,091,276541  0% 0% 0% 100%
 mandelbrot 
Java 6 -Xint497.81497.8164,788903  0% 0% 0% 100%
Perl4,387.614,387.504,132311  0% 0% 0% 100%
 n-body 
Java 6 -Xint257.48257.4912,4001424  0% 0% 0% 100%
Perl1,639.611,639.532,5721140  0% 0% 0% 100%
 fasta 
Java 6 -Xint49.4649.4612,0161240  0% 0% 0% 100%
Perl311.00310.982,548934  1% 1% 1% 100%
 fannkuch 
Java 6 -Xint652.83652.8412,2401150  0% 0% 0% 100%
Perl2,660.572,660.432,060391  0% 0% 0% 100%
 pidigits 
Java 6 -Xint6.997.0113,448938  0% 0% 0% 100%
Perl7.477.483,884385  0% 0% 0% 100%
 k-nucleotide 
Java 6 -Xint880.31880.31324,6801602  0% 0% 0% 100%
Perl225.09228.97780,228359  0% 0% 0% 100%
 reverse-complement 
Java 6 -Xint26.9426.97460,756592  0% 0% 0% 100%
Perl5.305.30433,056298  0% 0% 0% 100%
 regex-dna 
Java 6 -Xint338.47338.46676,912929  0% 0% 1% 100%
Perl38.7838.78165,064527  0% 0% 0% 100%
 chameneos-redux 
Java 6 -Xint49.4449.4839,1121462  1% 1% 0% 100%
No Perl

 Measurements for all the accepted programs

 Java 6 -Xint : ubiquitous bytecode interpreter virtual machine 

java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, interpreted mode)

Home Page: http://java.sun.com/j2se/

Download: http://java.sun.com/j2se/downloads/

Revised BSD license