What is SPECjbb2000?
SPECjbb2000 is a Java program emulating a 3-tier system with emphasis on the middle tier. Random input selection represents the 1st tier user interface. SPECjbb2000 fully implements the middle tier business logic. The 3rd tier database is replaced by binary trees. SPECjbb2000 is inspired by the TPC-C benchmark and loosely follows the TPC-C specification for its schema, input generation, and transaction profile. SPECjbb2000 replaces database tables with Java classes and replaces data records with Java objects. The objects are held by either binary trees (also Java objects) or other data objects. SPECjbb2000 runs in a single JVM in which threads represent terminals in a warehouse. Each thread independently generates random input (tier 1 emulation) before calling transaction-specific business logic. The business logic operates on the data held in the binary trees (tier 3 emulation). The benchmark does no disk I/O or network I/O.
• Who will use SPECjbb2000 and how will they use it? • Why is the benchmark important for vendors? • Why did SPEC decide to develop SPECjbb2000? • Does this benchmark measure end-to-end Java performance? • Does SPECjbb2000 represent real applications? • What specific aspects of performance does SPECjbb2000 measure? • What factors affecting Java performance are not measured by SPECjbb2000? • Why doesn’t SPECjbb2000 cover AWT/graphics performance? • Is this benchmark suitable for measuring client performance? • Does SPECjbb2000 use Enterprise Java Beans (EJBs), Servlets or Java Server Pages (JSPs)? • Why doesn’t the benchmark measure network and database performance? • Does this benchmark replace any other benchmark? • Can I compare my SPECjbb2000 results with my TPC-C results? • Can SPECjbb2000 results be compared to results from other SPEC benchmarks? • Is this related to any of IBM’s BOB benchmarks? • Can I use this application for non-benchmarking purposes? • Do you provide source co
