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  2. Fragmentation (computing) - Wikipedia

    en.wikipedia.org/wiki/Fragmentation_(computing)

    Fragmentation (computing) In computer storage, fragmentation is a phenomenon in which storage space, main storage or secondary storage, such as computer memory or a hard drive, is used inefficiently, reducing capacity or performance and often both. The exact consequences of fragmentation depend on the specific system of storage allocation in ...

  3. Memory leak - Wikipedia

    en.wikipedia.org/wiki/Memory_leak

    e. In computer science, a memory leak is a type of resource leak that occurs when a computer program incorrectly manages memory allocations [1] in a way that memory which is no longer needed is not released. A memory leak may also happen when an object is stored in memory but cannot be accessed by the running code (i.e. unreachable memory). [2]

  4. Computational complexity - Wikipedia

    en.wikipedia.org/wiki/Computational_complexity

    Computational complexity. In computer science, the computational complexity or simply complexity of an algorithm is the amount of resources required to run it. [1] Particular focus is given to computation time (generally measured by the number of needed elementary operations) and memory storage requirements. The complexity of a problem is the ...

  5. Thrashing (computer science) - Wikipedia

    en.wikipedia.org/wiki/Thrashing_(computer_science)

    Thrashing (computer science) In computer science, thrashing occurs in a system with virtual memory when a computer's real storage resources are overcommitted, leading to a constant state of paging and page faults, slowing most application -level processing. [1] This causes the performance of the computer to degrade or even collapse.

  6. Data buffer - Wikipedia

    en.wikipedia.org/wiki/Data_buffer

    In computer science, a data buffer (or just buffer) is a region of memory used to store data temporarily while it is being moved from one place to another. Typically, the data is stored in a buffer as it is retrieved from an input device (such as a microphone) or just before it is sent to an output device (such as speakers); however, a buffer may be used when data is moved between processes ...

  7. Memory paging - Wikipedia

    en.wikipedia.org/wiki/Memory_paging

    Memory paging. In computer operating systems, memory paging (or swapping on some Unix-like systems) is a memory management scheme by which a computer stores and retrieves data from secondary storage [a] for use in main memory. [citation needed] In this scheme, the operating system retrieves data from secondary storage in same-size blocks called ...

  8. Parallel computing - Wikipedia

    en.wikipedia.org/wiki/Parallel_computing

    To deal with the problem of power consumption and overheating the major central processing unit (CPU or processor) manufacturers started to produce power efficient processors with multiple cores. The core is the computing unit of the processor and in multi-core processors each core is independent and can access the same memory concurrently.

  9. Complexity class - Wikipedia

    en.wikipedia.org/wiki/Complexity_class

    Complexity class. In computational complexity theory, a complexity class is a set of computational problems "of related resource-based complexity ". [1] The two most commonly analyzed resources are time and memory. In general, a complexity class is defined in terms of a type of computational problem, a model of computation, and a bounded ...