The performance of Java on Sun CoolThreads servers continues to be impressive. Our latest round of improvements have increased performance on SPECjbb2005 by 17% on the Sun Fire T1000 and T2000. If you thought the competitive positioning of these systems was impressive before, take a look at them now. The charts below represent the competitive landscape for the Sun CoolThreads servers and by no means are they meant to be a complete comparison of all systems in the classes described below. If there are particular descrepencies that are annoying, please let me know. For more detailed information on the Sun Fire T1000 and T2000 and comparisions running competitive benchmarks check out BMSeer's blog. The first chart shows the competitive landscape for 1 RU servers. The Sun Fire T1000 shines compared to other systems in this space. The Sun Fire X4100 (powered by AMD Opteron CPUs) looks rather good as well. The second chart shows the competitive landscape for 2 RU and 4 RU servers. The Sun Fire T2000 shows impressive performance against the competition in this space as well. Now this is were the Sun Fire T1000 and Sun Fire T2000 truly excel. The first power performance graph shows a comparision based on performance per watt using the SPECjbb2005 bops metric. The data presented is limited to what I've gathered using The Sun Fire CoolThreads systems and what has been gathered on http://www.sun.com/coolthreads. Here's another look at power performance using the SWaP metric. The SWaP metric is similar to performance / Watt, but includes system footprint as a part of the equation. The Sun Fire T1000 number is impressive. The light bulb next to my workbench in my basement uses more power than this server. For those individuals who prefer a spreadsheet to charts, here the same information as show above. Finally, this chart shows the performance difference between J2SE 5.0_06 and J2SE 5.0_08 on the same hardware, demonstrating a 17% increase in performance on both the Sun Fire T1000 and Sun Fire T2000. If we can improve performance by 17% in 6 months, wait to you see what Java SE 6 ("Mustang") can do. Required Disclosure Statement: SPECjbb2005 Sun Fire T1000 (1 chip, 8 cores) 51,528 SPECjbb2005 bops, 12,882 SPECjbb2005 bops/JVM submitted for review; SPECjbb2005 Sun Fire T2000 (1 chip, 8 cores) 74,365 SPECjbb2005 bops, 18,591 SPECjbb2005 bops/JVM submitted for review; Sun Fire X4100 (2 chips, 2 cores) 38,090 SPECjbb2005 bops, 19,045 SPECjbb2005 bops/JVM submitted for review; IBM eServer p5 550 (2 chips, 4 cores) 61,789 SPECjbb2005 bops, 61,789 SPECjbb2005 bops/JVM; IBM x346 (2 chips, 4 cores) 39,585 SPECjbb2005 bops, 39,585 SPECjbb2005 bops/JVM; IBM eServer p5 520 (1 chip, 2 cores) 32,820 SPECjbb2005 bops, 32,820 SPECjbb2005 bops/JVM; IBM eServer p5 510 (1 chip, 2 cores) 36,039 SPECjbb2005 bops, 36,039 SPECjbb2005 bops/JVM; Fujitsu Siemens RX220 (2 chips, 2 cores) 61,155 SPECjbb2005 bops, 30,578 SPECjbb2005 bops/JVM, Dell PE SC1425 (2 chips, 2 cores) 24,208 SPECjbb2005 bops, 24208 SPECjbb2005 bops/JVM; Dell PE 850 (1 chips, 2 cores) 31,138 SPECjbb2005 bops, 31,138 SPECjbb2005 bops/JVM; Dell PE 2950 (2 chips, 4 cores) 64,288 SPECjbb2005 bops, 64,288 SPECjbb2005 bops/JVM; SPEC, SPECjbb reg tm of Standard Performance Evaluation Corporation. Results as of 6/02/06 on www.spec.org