The Java benchmark tests included Sunflow Rendering System, Bork File Encrypter, Java SciMark, and Java 2D Microbenchmark. All tests ran the same compiled Java byte-code on both Ubuntu Linux and Windows Vista. The first test up was with the Sunflow Rendering System. Although that heavily stresses the CPU, both operating systems performed equally. Next up was the Fast Fourier Transform (FFT) test, where the fastest performance was seen using Sun's Java stack on Ubuntu 8.10. There Ubuntu significantly outperformed Vista, as it was about 30 per cent faster. The Successive Over Relaxation (SOR) test with Java SciMark also ran fastest on Ubuntu, as the test ran about 33 per cent faster under Linux than it did under Vista. On the Monte Carlo test with Java SciMark, Vista was again blown out of the water, as the JVM was a whopping three times faster on Ubuntu.
The SciMark composite performance test showed Ubuntu turning in the best performance yet again, as it came up as the top performer there too at 50 per cent faster compared to Vista. Vista did come out on top in one test. Its j2dbench performance was a lot better, yet this was most likely due to the Intel graphics stack lacking performance optimisations in Linux.
( www.theinquirer.net )