Operating Systems Case Study Linux 1. Objectives History of Linux Linux Architecture Threads and States 2.

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Presentation transcript:

Operating Systems Case Study Linux 1

Objectives History of Linux Linux Architecture Threads and States 2

History of Linux 1960’s MIT, Bell Labs, GE jointly developed Multics 1970’s Bell labs people created Unics (Simpler Multics) Bell labs changed the name to Unix 1980’s Part of the Bell System breakup…Couldn’t license Unix Various versions of Unix (Berkeley, HP, etc.) 1990’s Linus Torvals begun work on Linux (Clone of Unix) Linux is named to mean “Linus’ Unix” 3

Linux Architecture 4

Thread States 5

Run Queue and Priorities 6

Virtual Address Translation 7

Physical (Real) Memory Zones 8

Free area Vectors 9

Page Replacement System 10

Home Directory (File System) 11

Directory Entry and Inode Cache 12

Ext2 inode Contents 13