Sun's Hotspot JVM continues to demonstrate industry leading performance. Here's just a few examples where Hotspot shines. SPECjbb2005 Leading x64 on Opteron 2-core result; 27004 bops, 27004 bops/JVM; Sun Fire X4100 and Sun Fire X4200 Leading x64 on Xeon 2-core result; 28,314 bops, 28,314 bops/JVM Fujitsu Siemens Computers PRIMERGY TX300 S2 Leading x64 on Opteron 4-core result: 45,124 bops, 45,124 bops/JVM Sun Fire X4100 and Sun Fire X4200 Best of class 1U result; Sun Fire T1000, 51,540 bops, 12,885 bops/JVM; Results under review. Best of class 2U result; 63,378 bops, 15,845 bops/JVM; Sun Fire T2000, powered by UltraSPARC T1 SPECjappserver2004 SPECjappserver2004 World Record 6 Sun Fire T2000 servers SPECjappserver2004 Single J2EE Node World Record 1 Sun Fire T2000 server SciMark Top 3 submitted results; running Solaris, Linux, and Windows Please post comments and questions here or on the java.net performance forum sharing your experiences running Hotspot. Yes, I'd love to here success stories, but what is most important are those situations where performance wasn't what you expected. We are serious about Java performance here at Sun, and want to do what it takes to make every Java user satisfied with the performance of their application. We want to fix any and all performance issues you run into. We can and will continue to demonstrate industry leading performance, but what is most important is broad and reliable JVM performance which is defined individually with every user's application. Fine print SPEC disclosure: SPECjbb2005 Sun Fire X4200 (2 chips, 2 cores, 2 threads) 27004 bops, 27004 bops/JVM, Fujitsu Siemens Computers PRIMERGY TX300 S2 (2 chips, 2 cores, 4 threads) 28,314 bops, 28,314 bops/JVM, Sun Fire X4200 (2 chips, 4 cores, 4 threads) 45,124 bops, 45,124 bops/JVM, Sun Fire T1000 (1 chip, 8 core, 32 threads) 51,540 bops, 12,885 bops/JVM submitted for review, Sun Fire T2000 (1 chip, 8 core, 32 threads) 63,378 bops, 15,845 bops/JVM. SPEC™ and the benchmark name SPECjbb2005™ are trademarks of the Standard Performance Evaluation Corporation. Competitive benchmark results stated above reflect results published on www.spec.org as of November 30, 2005. For the latest SPECjbb2005 benchmark results, visit http://www.spec.org/osg/jbb2005.