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Duc Vianney, Ph. D.

Company: Linux Kernel Performance Group, Linux Technology Center, IBM
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Duc Vianney works in operating system performance evaluation and measurement in computer architectures and Java. He is with the Linux Kernel Performance Group at the IBM Linux Technology Center. Duc has written several articles on Java performance for IBM developerWorks and PartnerWorld. You can contact Duc at


The Intel Xeon processor introduces a new technology called Hyper-Threading (HT) that, to the operating system, makes a single processor behave like two logical processors. When enabled, the technology allows the processor to execute multiple threads simultaneously, in parallel within each processor, which can yield significant performance improvement. We set out to quantify just how much improvement you can expect to see.

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