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Advanced UNIX Programming: Lecture 22 Overview and Project Announcement

In this lecture, we delve into client-server design, exploring concurrent server architectures and various alternatives. Key topics include multiplexed I/O and the concept of preforking in server management to enhance performance. Students are reminded of the reading assignments pertaining to Chapters 7 and 27, along with an upcoming quiz in Week 8. A project announcement will also be made, providing opportunities for applied learning in UNIX programming.

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Advanced UNIX Programming: Lecture 22 Overview and Project Announcement

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  1. Advanced UNIX programming Fall 2002 Instructor: Ashok Srinivasan Lecture 22 Acknowledgements: The syllabus and power point presentations are modified versions of those by T. Baker and X. Yuan

  2. Announcements • Reading assignment • Chapter 27 • Sections 27.1 and 27.2 • Section 27.6 • Chapter 7 • Sections 7.1 – 7.6 and 7.9 – 7.11 • Project will be announced today • Quiz Monday

  3. Week 8 Topics • Client-Server design • Concurrent server • Programming assignment 3 discussion • Client-server design alternatives • Server with multiplexed I/O • Preforked server

  4. Client-server design alternatives • Server with multiplexed I/O • Preforked server

  5. Preforked server • Main limitation of concurrent server • fork overhead • Instead, prefork N processes and use them forever • See example1.c and example2.c

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