Windows 7 to scale to 256 processors | All about Microsoft | ZDNet.com

Windows 7 to scale to 256 processors | All about Microsoft | ZDNet.com: "Russinovich noted with the dispatcher-lock roadblock removed, a second set of locks became the new focus for folks working on the Windows kernel. The PFN database inside Windows, which contains information on all of the physical memory in the system, was becoming another scalability bottleneck when trying to get Windows to handle multithreaded apps on massively multicore machines. With Windows 7 and Windows Server 2008 R2 (Windows 7 Server), Microsoft again broke this lock down into finer grain locks, Russinovich said."