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J2EE Sig – Load Testing App Servers

Presented by Stephen Davidson Mahender Akula Sponsored by; Stephen Davidson & Associates, Inc. J2EE Sig – Load Testing App Servers. Agenda. Discussion of Tools available What to use, & why Load Generators Profilers. Load Generators. Grinder MultiPlatform Clusterable

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J2EE Sig – Load Testing App Servers

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  1. Presented by Stephen Davidson Mahender Akula Sponsored by; Stephen Davidson & Associates, Inc. J2EE Sig – Load Testing App Servers

  2. Agenda • Discussion of Tools available • What to use, & why • Load Generators • Profilers

  3. Load Generators • Grinder • MultiPlatform • Clusterable • Version 2.x (3.0 in Beta) • Maintained be BEA, among others • Siege • 1.00 (from 2001) • Maintained • VERY STABLE

  4. Profilers • Several Available on SourceForge • Experiment to see which you like best • Eclipse Plugin Available (see SF) • Extensible Java Profiler (Beta 4 – But quite stable) • Mike's Java Profiler (Alpha Version) • JPerfAnal (Version 2.0) • Several More • JMeter • See Jakarta

  5. JPerfAnal • Distributed with book “ Java Programming on Linux”. (http://www.javalinux.net) • Well Documented (see Docs link on SF Homepage) • Uses output from Sun's hprof Profiler • java -Xrunhprof:help • Java -Xrunhprof:cpu=samples,depth=XXX,thread=y...

  6. Extensible Java Profiler • Well Documented • Need to build on local machine • Make sure to have zlib compression Lib installed • Make sure to edit the MakeFile! • Multi-platform versions available • VERRY HIGH OVERHEAD!!!! • Much promise, but not yet ready for large projects

  7. XLink • Maintained by Kimble Consultancy Services • J2EE (especially Jboss/Jetty servers)

  8. OptimizeIt • Made by Borland ($$$ - 1599 for Basic/$2600 for Enterprise) • Currently the most powerful/easiest to use of the ones tested. • Multiple Platform versions available • Adds about 25 % (10% to 35%) to application overhead

  9. Launching • JAVA_OPTS • Use to turn on JVM Profiling when launching JBoss & TomCat • May/May Not be used with other application servers • Some Tools (OptimizeIt) do realtime profiling, others (JPerfAnal) wait until run is done, then analyze results.

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