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<title>
Performance Monitoring</title>
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<div class="titlepage">
<div>
<div>
<h2 class="title">
<a name="performance">
</a>
Performance Monitoring</h2>
</div>
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<div>
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<p>
The "Performance Monitor" is
a special Ant listener than can keep track of the amount of time that each target
and task takes to execute. At the end of the build, these times will be sorted
from fastest to slowest and displayed following the build output. This can be
useful to pinpoint slow and/or inefficient spots in the build process and
identify those areas that could benefit from optimization.
</p>
<p>
The performance listener can be used by passing a parameter
to the command line for Ant:
</p>
<p>
<table border="0" bgcolor="#E0E0E0">
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<pre class="programlisting">
ant -listener net.sf.antcontrib.perf.AntPerformanceListener target
</pre>
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<p>
Following is an example of the results from using the listener. The result format is projectname.targetname for targets and projectname.targetname.taskname for tasks. All times are shown to the nearest millisecond.
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<pre class="programlisting">
[danson@blackdog antelope]$ ant -listener net.sf.antcontrib.perf.AntPerformanceListener dist
Buildfile: build.xml
init:
clean:
[delete] Deleting 170 files from /home/danson/apps/antelope/build
compile:
[javac] Compiling 61 source files to /home/danson/apps/antelope/build
all:
-build_number:
prep_files:
[delete] Deleting 3 files from /home/danson/apps/antelope/config
[copy] Copying 3 files to /home/danson/apps/antelope/config
combined:
[echo] basedir = /home/danson/apps/antelope
[jar] Building jar: /home/danson/apps/antelope/Antelope_1.208.jar
dist:
[delete] Deleting 4 files from /home/danson/apps/antelope/dist
[zip] Building zip: /home/danson/apps/antelope/dist/Antelope_1.208.zip
[echo] Created zip file.
-zip_docs:
[zip] Building zip: /home/danson/apps/antelope/dist/Antelope_docs_1.208.zip
[echo] Zipped docs to Antelope_docs_1.208.zip.
-zip_tasks:
[jar] Building jar: /tmp/Antelope_tasks_1.208.jar
[zip] Building zip: /home/danson/apps/antelope/dist/Antelope_tasks_1.208.zip
[delete] Deleting: /tmp/Antelope_tasks_1.208.jar
[echo] Zipped tasks to Antelope_tasks_1.208.zip.
[copy] Copying 1 file to /home/danson/apps/antelope/dist
BUILD SUCCESSFUL
Total time: 8 seconds
-------------- Target Results -----------------------
Antelope.all: 0.000 sec
Antelope.init: 0.011 sec
Antelope.-build_number: 0.014 sec
Antelope.clean: 0.233 sec
Antelope.-zip_tasks: 0.297 sec
Antelope.prep_files: 0.311 sec
Antelope.-zip_docs: 0.546 sec
Antelope.combined: 1.290 sec
Antelope.compile: 1.724 sec
Antelope.dist: 2.162 sec
-------------- Task Results -----------------------
Antelope.init.mkdir: 0.000 sec
Antelope.init.mkdir: 0.001 sec
Antelope.dist.echo: 0.002 sec
Antelope.prep_files.delete: 0.004 sec
Antelope.combined.echo: 0.005 sec
Antelope.dist.delete: 0.006 sec
Antelope.-zip_tasks.echo: 0.007 sec
Antelope.dist.copy: 0.011 sec
Antelope.-build_number.buildnumber: 0.014 sec
Antelope.compile.copy: 0.016 sec
Antelope.prep_files.copy: 0.020 sec
Antelope.prep_files.replace: 0.071 sec
Antelope.-zip_tasks.zip: 0.122 sec
Antelope.-zip_tasks.jar: 0.161 sec
Antelope.prep_files.replace: 0.216 sec
Antelope.clean.delete: 0.233 sec
Antelope.dist.antcall: 0.421 sec
Antelope.-zip_docs.zip: 0.540 sec
Antelope.dist.antcall: 0.685 sec
Antelope.dist.zip: 1.036 sec
Antelope.combined.jar: 1.284 sec
Antelope.compile.javac: 1.708 sec
-------------- Totals -----------------------
Start time: Thu, 5 Dec 2002 17:18:30
Stop time: Thu, 5 Dec 2002 17:18:39
Total time: 8.476 sec
</pre>
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<hr>
<p align="center">Copyright © 2003 Ant-Contrib Project. All
rights Reserved.</p>
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