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Define Memory-Management Unit (MMU) in Operating System?

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November 8th, 2012 10:22
in Operating System by charlene (University of Virginia (VA), General physics)

Define Memory-Management Unit (MMU) in Operating System?

Can you define Memory-Management Unit (MMU) as a concept of the Operating System Subject?

8 Answers
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November 12th, 2012 07:57
themask (University of Dayton (OH), General law)
"Hardware device that maps virtual to physical addressIn MMU scheme, the value in the relocation register is added to every address generated by a user process at the time it is sent to memoryThe user program deals with logical addresses; it never sees the real physical addresses Source: http://in.docsity.com/en-docs/Operating_System_-_Memory_Management_-_Sonali_Agrawal"

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November 16th, 2012 06:48
arold (Duke University (NC), Databases)
"A new ram management product (MMU), at times termed paged memory space operations model (PMMU), is usually a computers part liable for controlling accesses in order to memory requested with the Computer. It is capabilities include rendering of personal address to help actual handles (my spouse and i.elizabeth., virtual storage managing), storage safety, storage cache controller, jalopy arbitrament as well as in less complicated computer architectures (especially eight-bit programs) traditional bank switching. "

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November 19th, 2012 10:42
karthur (University of Alaska System (AK), Mathematics)
"Mod MMUs normally watershed your electronic target infinite (the product range involving details as used by the actual processor) in to websites, to each one using a sizing which is a energy of two, normally a couple of kilobytes, however they might be much larger. The end and bits of your savoir-faire (the balance out in just a web page) remain unaltered. Top of the deal with bits are the (electronic) page number. Your MMU usually transposes virtual web site volumes for you to physical page quantities through a good associatory storage cache termed as a interpretation lookaside stream (TLB). If your TLB does not have any translation, some sort of slow procedure regarding hardware-certain data structures or software assistance can be used. The information seen in such files set ups are usually termed web page kitchen table articles (PTEs), as well as the data framework is typically termed as a page table. The real page number is definitely together with the site offset to offer the whole home address. "

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November 19th, 2012 13:51
aristel (University of Virginia (VA), American literature)
    "Limited with regard to ram administration unit, this equipment ingredient that manages virtual storage programs. Commonly, your MMU is a component of the Computer, even though in some types this can be a independent chips. Your MMU incorporates a bit of computer memory that will retains A stand coordinating personal address to actual addresses. This specific desk is known as your Rendering Looking-aside Buffer (TLB). All asks for pertaining to information usually are delivered to the actual MMU, which often ascertains regardless of if the info is in Ram memory or must be fetched in the bulk memory device. Should the results are not really in memory space, your MMU issues a website error stop. "

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November 20th, 2012 07:57
astarloa (City University of New York (NY), General history)
"Some sort of storage direction product (MMU) is a hardware ingredient that manages all ram and caching procedures of this particular brand. Put differently, your MMU is answerable to every aspect associated with ram supervision. It is usually built-into this processor chip, though in certain systems this takes in a separate IC (integrated circuit) chips. "

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November 20th, 2012 10:05
teap1x (Utah State University (UT), Contemporary history)
"Typically, some sort of chipset (motherboard) could are apt to have D bytes connected with physical storage. Real computer memory can be ""tangible"" memory space which will be throughout the world obvious to all processor chips. Underneath regular operations, or rather, when the CPU is actually working with out their Paged Memory space Supervision System turned on, virtually any address the particular Computer suffers from will certainly avoid your (S)MMU and move specifically out there onto the particular tackle shuttle bus. I'd like to shift straight into thinking about any TLB, you bet ""page number"" will work, and so on. Numerous model architectures of waking time establish some behaviors that the cpu will probably demonstrate if the Bone software package invokes the particular processor's PMMU. Merely precisely what *will be* some sort of Memory space Managing Unit? A new Memory Direction Unit is usually a storage cache involving translation information. Every time a brand permits multiple ""exclusive"", main(a) savoir-faire spots to get used with a appliance so that the Pc considers just one grow involving ""electronic"" ram which is often mapped to be able to just about any bodily webpage, there needs to be a certain amount of tabling, or even various other history-keeping that actual physical framing each and every virtual web site need to cause the cpu to help finally admittance on the handle shuttle bus. "

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November 20th, 2012 11:52
hambery (Columbia University (NY), Modern literature)
"Your operating-system is made up of many operations devices as well as recollection administration unit is one offering the supervision characteristics for the memory so that total utilization of recollection happens. Your numerous-tasking on the people happens since divided storage is actually provided to different operations which might be supplied by storage operations unit. As a result, on this page I'll present to you this more than-most purpose of the storage supervision in computing machine performance? "

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November 20th, 2012 13:47
alannis (University of Texas(TX), Philosophy of mathematics)
"The actual personal handle living space (the product range of addresses utilized by the brand) is actually split into internet pages, as their size is iienqa_In, usually a couple of kilobytes. The lower And components of this deal with (the particular balance out in a page) remain unrevised. Top of the handle bits would be the (personal) folio. This MMU includes a varlet table that's indexed (perhaps associatively) through the folio. Each webpage dining room table gain access to (PTE) provides the real page number related to the exclusive one particular. This can be combined with page set-back to provide the complete street address. "

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