Oracle JRockit Java Virtual Machine (JVM) achieved record performance for a four socket Intel-based system on two SPECjbb2005 benchmarks,(1,2) an industry-standard measurement of server side Java-based application performance. Both results, achieved on Dell PowerEdge R900 servers with Intel Xeon processors, beat similarly configured Sun JVM SPECjbb2005 benchmark results.

SPECjbb2005 (Java Server Benchmark), developed by the Standard Performance Evaluation Corporation, is a benchmark for evaluating the performance of server side Java. SPECjbb2005 evaluates the performance of server side Java by emulating a three-tier client/server system, with emphasis on the middle tier. The benchmark exercises the implementations of the JVM (Java Virtual Machine), JIT (Just-In-Time) compiler, garbage collection, threads and some aspects of the operating system. It also measures the performance of CPUs, caches, memory hierarchy and the scalability of shared memory processors (SMPs).

• Setting a new SPECjbb2005 benchmark record for a four socket Intel-based system,(6) Oracle JRockit delivered 628,291 SPECjbb2005 bops/JVM, running on a Dell PowerEdge R900 four socket server with six-core Intel(R) Xeon(R) x7460 2.67 GHz processors, 64 GB RAM and Microsoft Windows 2003. The result delivered more than 18 percent higher performance than a near identical configuration with Sun's Java Virtual Machine.
• In a second test configuration, Oracle JRockit delivered 537,116 SPECjbb2005 bops/JVM, running on a Dell PowerEdge R900 server with four quad-core Intel Xeon x7350 2.93 GHz processors, 64 GB RAM and Microsoft Windows 2003. This result delivered almost 16 percent more performance than a near identical configuration with Sun's Java Virtual Machine.