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Well, what better way to start off my blog than to launch it concurrently with the new UltraSPARC T1 processor? If you haven't heard so already, Sun is launching a new line of servers called the Sun Fire CoolThreads servers that feature the new UltraSPARC T1 processor. What is so cool about this server that it runs 4 hardware threads concurrently per core instead of sequentially. The results? Greater efficiency and throughput with much lower power consumption. I'll leave the nitty gritty details about the chip to more qualified sources, but I wanted to blog about how this relates back to the work that I am currently doing with Java performance. I have been looking at XML performance with XMLTest, a benchmark we have been using to measure parsing performance with a different battery of XML documents. (You can get more details about XMLTest on java.net). Specifically, we have been measuring how different XML parsing technologies scale on the Sun Fire CoolThreads server: Sun's implementation of the Streaming XML API for XML (StAX) called Sun Java Streaming XML Parser (SJSXP), Java Architecture for XML Binding (JAXB).

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