In computing, virtual memory, or virtual storage, is a memory management technique that provides an "idealized abstraction of the storage resources that...
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references to memory, and translates the memory addresses being referenced, known as virtual memory addresses, into physical addresses in main memory. In modern...
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In computer science, memory virtualization decouples volatile random access memory (RAM) resources from individual systems in the data center, and then...
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physical memory of the system. For historical reasons, this technique is sometimes referred to as swapping. When combined with virtual memory, it is known...
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A page, memory page, or virtual page is a fixed-length contiguous block of virtual memory, described by a single entry in a page table. It is the smallest...
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Virtual memory compression (also referred to as RAM compression and memory compression) is a memory management technique that utilizes data compression...
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devised that increase the effectiveness of memory management. Virtual memory systems separate the memory addresses used by a process from actual physical...
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evolves virtual memory for purposes of virtualization, new systems of memory overcommitment may be applied to manage memory sharing among multiple virtual machines...
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computing, virtualization (abbreviated v12n) is a series of technologies that allows dividing of physical computing resources into a series of virtual machines...
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OpenVMS (redirect from Virtual Memory System)
often referred to as just VMS, is a multi-user, multiprocessing and virtual memory-based operating system. It is designed to support time-sharing, batch...
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other virtual memory operating systems. When a new application on a 32-bit OS is executed, the process has a 4 GiB VAS: each one of the memory addresses...
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Operating system (section Virtual memory)
for example, virtual memory can provide a program with the illusion of nearly unlimited memory that exceeds the computer's actual memory. Operating systems...
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low-level dynamic memory allocation code in the operating system, when mapping virtual memory to physical memory. A virtual memory subsystem that lacks...
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IBM System/370 Model 155 (section Virtual memory)
the IBM System/370 line of computers. Since none of them came with virtual memory, "which was to be a hallmark of the 370 line", some said about these...
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CPU-visible virtual addresses to physical addresses, the IOMMU maps device-visible virtual addresses (also called device addresses or memory mapped I/O...
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the computer memory can be transferred to storage; a common way of doing this is through a memory management technique called virtual memory. Modern computer...
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the computer's physical memory, or be flagged as being protected. Virtual memory makes it possible to have a linear virtual memory address space and to use...
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pages of [virtual] memory. To implement memory ballooning, the virtual machine's kernel implements a "balloon driver" that allocates unused memory within...
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A memory-mapped file is a segment of virtual memory that has been assigned a direct byte-for-byte correlation with some portion of a file or file-like...
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IBM System/370 Model 145 (section Virtual memory)
Model 145 did not support virtual memory. Unlike the earlier Model 155 and 165 systems, for which an upgrade to virtual memory required the purchase of...
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operating systems, but have no support for virtual memory or memory protection. Operating systems that use virtual memory require more time for context switching...
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IBM System/360 Model 67 (section Virtual memory)
notably a Dynamic Address Translation unit, the "DAT box", to support virtual memory, 32-bit addressing and the 2846 Channel Controller to allow sharing...
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general memory hierarchy structuring. Many other structures are useful. For example, a paging algorithm may be considered as a level for virtual memory when...
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machine code with 64-bit virtual memory addresses. However, not all 64-bit instruction sets support full 64-bit virtual memory addresses; x86-64 and AArch64...
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addresses (actual locations in hardware memory) were the same. However, with the introduction of virtual memory most application programs do not deal directly...
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Kernel (operating system) (redirect from Kernel memory)
systems, a program's virtual address may refer to data which is not currently in memory. The layer of indirection provided by virtual addressing allows the...
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VAX (section Virtual memory map)
acronym for virtual address extension) is a series of computers featuring a 32-bit instruction set architecture (ISA) and virtual memory that was developed...
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Protected mode (redirect from Protected Virtual Address Mode)
(CPUs). It allows system software to use features such as segmentation, virtual memory, paging and safe multi-tasking designed to increase an operating system's...
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Presence of this population in humans is currently under investigation. Virtual memory T cell (TVM): As of now, the only function apparent in TVM cells is...
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CPU cache (redirect from Virtual-to-physical address translation)
see virtual memory for elaboration. One early virtual memory system, the IBM M44/44X, required an access to a mapping table held in core memory before...
97 KB (13,327 words) - 11:22, 3 July 2025