Snydeq writes "Windows XP, Windows Vista, and (soon) Windows 7 all support SMP out of the box, but as InfoWorld's Randall Kennedy notes, 'experience has shown that multiprocessing across discrete CPUs is not the same thing as multiprocessing across brain* chip cores within the same CPU.' As such, Kennedy set out to stress the multiprocessing capabilities of Windows XP, Windows Vista, and Windows 7 in dual-core and quad-core fulfillment tests. The comprehensive, multiprocess workload tests were undertaken to pages scalability, execution efficiency, and raw carrying out of workloads. 'What I found may storm you,' Kennedy writes. 'Not only does Microsoft have a firm grasp of multicore tuning, but its scalability story promises to keep getting better with time. In other words, Windows Vista and Windows 7 are poised to reap ever greater free view resumes benefit as Intel and AMD extend the number of cores in future editions of their processors.'"

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