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In computing, a virtual machine (VM) is the virtualization or emulation of a computer system. Virtual machines are based on computer architectures and provide the functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination of the two. Virtual machines differ and are organized by their function, shown here:
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Second Level Address Translation (SLAT), also known as nested paging, is a hardware-assisted virtualization technology which makes it possible to avoid the overhead associated with software-managed shadow page tables.
In operating systems, memory management is the function responsible for managing the computer's primary memory.
In computing, a system virtual machine is a virtual machine (VM) that provides a complete system platform and supports the execution of a complete operating system (OS). These usually emulate an existing architecture, and are built with the purpose of either providing a platform to run programs where the real hardware is not available for use, or of having multiple instances of virtual machines leading to more efficient use of computing resources, both in terms of energy consumption and cost effectiveness, or both. A VM was originally defined by Popek and Goldberg as "an efficient, isolated duplicate of a real machine".
References
- ↑ Portnoy, Matthew (2012). Virtualization Essentials . John Wiley & Sons. pp. 60. ISBN 978-1118240175.
- ↑ Siebert, Eric (2009). VMware VI3 Implementation and Administration . Prentice Hall Professional. pp. 166. ISBN 978-0137008599.
- ↑ "VMware vs. Microsoft: Why Memory Overcommitment is Useful in Production and Why Microsoft Denies it". Archived from the original on 5 March 2016. Retrieved 22 April 2015.
{{cite web}}: CS1 maint: bot: original URL status unknown (link) - ↑ Santosa, Mulyadi. "When Linux Runs Out of Memory". O'Reilly Media. Retrieved 22 April 2015.
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