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Introduction
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J2DBench is a suite of benchmarks with a GUI front end that lets you
analyze the performance of many Java2D graphical operations. You can
easily modify the test options, and save them for later runs using
GUI, or load them in batch mode to allow quick testing on different
builds. It also provides logging of the result, to make the
comparison of the collected data easier.
J2DAnalyzer is J2DBench a results analyzer/comparator which can
compare the results generated by the J2DBench runs.
XMLHTMLReporter is an additional tool which can create an html report
from the results files generated by the J2DBench runs.
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Minimum requirements
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The benchmark requires at least jdk1.4 to compile and
at least jdk1.2** to run.
** Note: the goal is to make the benchmark run on 1.1.x as well.
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How To Compile
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#> cd J2DBench
The benchmark can be compiled by using either ant:
#> ant
or gnumake (assuming there's 'javac' in the path):
#> gnumake
The jar files will be generated into J2DBench/dist directory.
Note that the workspace also contains Netbeans 4.0 project file:
allowing it to be easily imported into Netbeans.
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How To Run J2DBench, J2DAnalyzer, XMLHTMLReporter
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#> ant run
or
#> java -jar dist/J2DBench.jar
To get help page for each of the tools, run:
#> java -jar dist/J2DBench.jar -help
#> java -jar dist/J2DAnalyzer.jar -help
#> java -cp dist/J2DAnalyzer.jar j2dbench.report.XMLHTMLReporter -help
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Using J2DBench GUI to Create Options File
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There are global options, options specific to a group of benchmarks,
and benchmark-specific options.
Global options affect all groups of benchmarks, group options only
affect benchmarks in particular group, and benchmark-specific ones are
relevant to a single benchmark.
Examples of important global options:
Calibration:
if the "Fixed Number of reps" is set to 0, J2DBench will calibrate
each individual benchmark, meaning that it will determine how many
repetitions each benchmark can perform in "Target Test Time", and
use this number of repetitions for each Test Run.
If "Fixed Number of reps" is non-0, each benchmark will be run for
specified number of repetitions. The use of Calibration mode is
preferable because the time per operation can vary widely among
the various tests.
Output Destinations:
where the benchmarks will render to.
All selected benchmarks will be repeated for each selected
destination.
Example of benchmark group options:
Text AntiAlias:
whether to use text antialiasing for text benchmarks
Example of a benchmark option:
Graphics Benchmarks/Imaging Benchmarks:
Image Rendering Sources (for Imaging Benchmarks only):
the source image types used for testing
Example of a benchmark:
Graphics Benchmarks/Imaging Benchmarks/Image Rendering Tests:
drawImage(img, tx, obs):
test the Graphics2D's
drawImage(Image image, AffineTransform tx, ImageObserver obs)
operation.
General note: you can chose multiple options in some cases by holding
Shift or Ctrl key.
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Use Scenario
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Suppose you want to compare rendering performance of the default
and opengl pipelines.
Start J2DBench (assuming the current dir is J2DBench's top dir)
#> java -jar dist/J2DBench.jar
You can either create and save the option file by selecting desired
tests and their attributes, or use one of the provided option files in
options/ directory (for example, default.opt, which is used below).
Note that it's very easy to create an option file which would take an
extremely long time to execute the tests, so be be careful when
choosing the options and benchmarks to run.
After the options file is created, start J2DBench in batch mode to run
the benchmarks for the default pipeline:
#> java -jar dest/J2DBench.jar -batch -loadopts options/default.opt \
-saveres default.res -title "Rendering - Default ppl" \
-desc "Rendering tests with the default pipeline"
This command will run the benchmarks defined in options/default.opt
file and save the result in default.res file.
(You can also run selected tests directly from the GUI mode by hitting
"Run Tests" in the J2DBench dialog)
Now run the benchmark with opengl pipeline:
#> java -Dsun.java2d.opengl=True -jar dest/J2DBench.jar -batch \
-loadopts options/default.opt \
-saveres opengl.res -title "Rendering - OpenGL" \
-desc "Rendering tests with OpenGL pipeline"
Now let's analyze the results using J2DAnalyzer:
Note that you can compare more than two sets of results, see
J2DAnalyzer's help page.
You can also generate html pages from the results files using
j2dbench.report.XMLHTMLReporter class in J2DAnalyzer.jar. Suppose
generated pages are to be stored in html_results directory.
First, make sure html_results/testcases directory exists:
#> mkdir -p html_results/testcases
Then generate the report:
#> java -cp J2DAnalyzer.jar j2dbench.report.XMLHTMLReporter \
-r html_results -b default.res -t opengl.res
The html report will be generated in html_results/ directory.
The index page: