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What is SPECjbb2005 ?

SPECjbb2005 is a benchmark measure developed by SPEC (Standard Performance Evaluation Corporation) to evaluate server performance in Java-based business application environments. This benchmark simulates a distributor’s ordering application, and evaluates system performance, not limited to Java performance. Hardware performance related to CPUs and memory is evaluated through processing data in memory. JVM performance and related JIT (Just-In Time) compiler and garbage collector contained in JVM are also evaluated.

SPECjbb2005 has two performance indices: total throughput ( by unit name, bops) and throughput per JVM instance (by unit name, bops/JVM). Where an application uses the majority of CPUs and memory resources, you should refer to the throughput per JVM index. When multiple applications run in parallel, you should refer to the total throughput index.

There are many differences between SPECjbb2005 and SPECjbb2000, so you can’t compare both benchmark results with each other. SPECjbb2005 is the successor of SPECjbb2000 and was developed by SPEC, who prepared new features including database sorting, changes to called procedure entry and new feature additions meeting the Java 5.0 standard. Moreover, SPECjbb2005 take regard of either multiple or single JVM instance, but SPECjbb2000 only runs in a single JVM instance.