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Lecture Notes for CMSC 412 - Operating Systems with Hicks at Maryland (UMD)

Notes Information

Material Type:Note
Professor:Hicks
Class:CMSC 412 - Operating Systems
Subject:Computer Science
University:University of Maryland
Term:Fall 2005
Keywords:
  • Internal Fragmentation
  • Utilization
  • Simple Solution
  • Logical View
  • Segmentation
  • External Fragmentation
  • Implementation
  • Hierarchical
  • Continued...
  • Architecture
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Sample Document Text

1 1 CMSC 412 Memory Management: Paging and Virtual Memory Anouncements .Reading: -Today: Chapter 8.2-8.4 -Next time: Chapter 8.5-8.7, 9 2 2 Anouncements .AWC 40 Level Lecture Series (40 LS) .AVW 3258 Oct 18, 19, 20 5- 6:30 pm .FRE PIZA! .Professors who will be teaching 400 level classes this spring will be speaking for 10-15 minutes about the class they will be teaching and how they will run the class. This is a great way to find out information about the course from the Professor who will be teaching it. Logical vs. Physical Adreses .The concept of a logical addres space that is bound to a separate physical adres space is central to proper memory management. -Logical adres - generated by the CPU; also refered to as virtual adres. -Physical adres - adres sen by the memory unit. 3 3 Basic Relocation Hardware Swapping . Main memory is big, but what if we run out? . A process can be swapped temporarily out of memory to a backing store, and then brought back into memory f...

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155, "/var/app/current/tmp/"