Is this real? The Metaphysics of Hardware Virtualization

One of the philosophical principles of hardware virtualization is that the hardware should appear “real” to a virtualized operating system. One could generalize this to a principle of emulation – the emulated entity should not be “enlightened” to the reality of its environment.  It is a useful assumption to be able to make when managing virtualized resources. If virtual hardware…

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Mapping Virtual Address Space in T-SQL

The Dynamic Management Views (DMVs) introduced in  SQL Server 2005 provide a comprehensive window into the state of the SQL engine and also the machine it is running on. This post will look at how the SQL Server process uses DMVs to keep track of its own Virtual Address Space (VAS). Querying the sys.dm_os_virtual_address_dump DMV results a map…

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