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  2. Page fault - Wikipedia

    en.wikipedia.org/wiki/Page_fault

    In computing, a page fault (sometimes called PF or hard fault) [a] is an exception that the memory management unit (MMU) raises when a process accesses a memory page without proper preparations. Accessing the page requires a mapping to be added to the process's virtual address space. Besides, the actual page contents may need to be loaded from ...

  3. ntoskrnl.exe - Wikipedia

    en.wikipedia.org/wiki/Ntoskrnl

    ntoskrnl.exe (short for Windows NT operating system kernel executable ), also known as the kernel image, contains the kernel and executive layers of the Microsoft Windows NT kernel, and is responsible for hardware abstraction, process handling, and memory management. In addition to the kernel and executive layers, it contains the cache manager ...

  4. Kernel (operating system) - Wikipedia

    en.wikipedia.org/wiki/Kernel_(operating_system)

    The kernel is a computer program at the core of a computer's operating system and generally has complete control over everything in the system. The kernel is also responsible for preventing and mitigating conflicts between different processes. [1] It is the portion of the operating system code that is always resident in memory [2] and ...

  5. VistA - Wikipedia

    en.wikipedia.org/wiki/VistA

    VistA. VISTA's Architecture is an "Onion" with concentric layers of functions. At its core is a single shared database that all applications use. The Veterans Health Information Systems and Technology Architecture (VISTA) is the system of record for the clinical, administrative and financial operations of the Veterans Health Administration [1 ...

  6. VA Kernel - Wikipedia

    en.wikipedia.org/wiki/VA_Kernel

    VA Kernel. The VA Kernel is a set of programs, developed by the Department of Veterans Affairs of the United States Government, which provide an operating system and MUMPS implementation independent abstraction to the VistA Hospital Information System. These programs (called 'routines' in MUMPS) are the only programs which are expected to not ...

  7. User space and kernel space - Wikipedia

    en.wikipedia.org/wiki/User_space_and_kernel_space

    A modern computer operating system usually uses virtual memory to provide separate address spaces called user space and kernel space. [a] Primarily, this separation serves to provide memory protection and hardware protection from malicious or errant software behaviour. Kernel space is strictly reserved for running a privileged operating system ...

  8. Black screen of death - Wikipedia

    en.wikipedia.org/wiki/Black_screen_of_death

    In some versions of macOS (such as OS X Lion), a hardware or software issue could cause the system to display a black screen of death instead of a kernel panic. This is usually pointed to a graphics card failure or a sleep/wake issue. See also. Fatal system error; References

  9. Comparison of operating system kernels - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_operating...

    The major contemporary general-purpose kernels are shown in comparison. Only an overview of the technical features is detailed. section below). Linux (kernel), Android, Ubuntu, CentOS, webOS, Fire OS, Firefox OS, ChromeOS, Syllable Server, Mastodon Linux, OpenBSD/Linux, Plan 9/Linux, Sailfish OS, Tizen, amongst others.