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Mac vs Microsoft vs

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Submitted By jrvasque1988
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Within the operating system world, there are several things to consider before making a decision as to which one best suits your needs. One of the most important things within an operating system is the ability to manage its memory. It is crucial for the operating system to be able to handle large amounts of information at the same time by using the processor, the RAM and the Hard Drive. Operating systems need a way to be able to allocate and de-allocate memory within the sectors of the RAM using the Kernel. However, every operating system handles this very differently. Let’s take a look at the differences between the three major operating systems and how they each manage its memory. We begin by analyzing UNIX/Linux. Linux, a form of UNIX, is very different in how it manages its memory to the other operating systems. Linux uses a tree like structure for memory management, and also using a numeric algorithm to make the best use of its valuable memory. The memory it manages is maintained in structures which enable protection of them by converting the list into the tree like structure. The tree is also balanced and not too much in depth. This helps for the information to be reached much more easily because it is closer for the processor to grab and use. It also cuts the time it takes for the processor to reach the data that would otherwise take longer to reach. The Virtual Address Descriptors marks the nodes within the tree as reserved, committed, or free. MAX OS works in a similar fashion to UNIX. Each task created within the MAC operating system has its own memory map. Within the operating system, the memory map mentioned before takes a form in to what it looks like an ordered doubly linked list. The objects within the linked list contain lists of pages as well as references to other objects. There really is not a need to be able to ever access the memory

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