CPU and IO Bound Process

Duration: 3 min

This video lesson is available to enrolled students.

Return to /learn/DSSSB-TGT-COMPUTER-SCIENCE-PAPER-2/operating-system/process-management/schedulers-switching/asset-cpu-and-io-bound-process after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Programming, Data Structures, OOP & Java: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References, Language Design, Intro to Compilers, Visual Basics, Syntax Analysis: Bottom-Up, Object Oriented Technology
  3. Computer Networks, TCP/IP & Network Security: Introduction to CN, Data Communication, DLL: Flow Control, DLL: Access Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Access Technologies, Network Security, Society, Law & Ethics, Cloud Computing, Mobile Computing, Net Layer:Routing Protocol, Cyber Safety and Security
  4. Teaching Methodology: Child Development, Concept of Pedagogy, Theories, Inclusive Education, Experiential Pedagogy, Assessment & Evaluation, Curriculum Framework & Reforms, National Education Policy (NEP) 2020, Psychology, Teaching-Learning Process, Personality Development, Teaching Methods & Strategies, Learning and Motivation, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Nature, Objectives & Characteristics of Teaching, Teaching-Learning Aids & ICT Integration, Classroom Management & Communication, Evaluation, Assessment & Measurement, Curriculum & School Environment, Inclusive Education & Special Needs, Professional Development & Ethics
  5. Digital Electronics / Boolean Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Analog-Digital Conversion
  6. Operating Systems & Linux: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, File Management, Disc Scheduling, Unix OS, Linux OS, Distributed Systems, Windows OS
  7. Data Base Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, File Organization & Indexing, Transaction Management, Concurrency Control, Database Security & Authorization, Database Recovery, Data Warehousing & Mining
  8. Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, HTML Basics, CSS, Emerging Technologies, JavaScript-Basics, .Net Programming, Electronic Data Interchange and E-Commerce, XML
  9. Computer Fundamentals, IT Basics & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer, Terms & Abbreviations, MS Office Applications, Instr Formats & Modes, Floating Point Rep
  10. Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  11. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, extras, Fundamentals of Systems and Information Systems
  12. Design & Analysis of Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  13. Mathematics - I, II, III, IV: Permutation and Combination, Logarithm, Linear Algebra, Algebra, Calculus, Trigonometry, Vectors, Set Theory, Functions, Relations, Propositional and Predicate Logic, Research Process Steps, Graph Theory
  14. Computer Graphics, Multimedia & Mobile Computing: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing, Multimedia
  15. Emerging Trends: Emerging Tech Trends, Knowledge Representation, Natural Language Processing
  16. Statistical Techniques: Probability, Statistics
  17. Interpolation - DI: Data Interpretation
  18. Basis of Physics: Physics
  19. Previous Year Paper:
  20. Business Studies and Management: Business Communication, Business Organization and Management, Financial Accounting, Business Economics, Management Information System (MIS), Knowledge Management & New Economy
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video lecture provides a comprehensive overview of process execution cycles, specifically focusing on the distinction between CPU-bound and I/O-bound processes. The instructor explains that a process execution consists of a cycle involving CPU execution or wait states and I/O execution or wait states. He defines CPU-bound processes as those that generate I/O requests infrequently and spend more time doing computations, while I/O-bound processes spend more time doing I/O. The lecture concludes by discussing the importance of the Long-Term Scheduler in selecting a good process mix to ensure system balance and performance.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces the concept of process execution cycles using a slide titled "CPU Bound and I/O Bound Processes." He explains that a process execution consists of a cycle of CPU execution or wait and I/O execution or wait. The slide text notes that normally a process alternates between two states, beginning with a CPU burst that may be followed by an I/O burst, then another CPU and I/O burst, and so on. He emphasizes that eventually, the process will end up on a CPU burst, keeping the process switching between CPU and I/O during execution. He physically underlines the text "CPU execution or wait" and circles the title terms to emphasize the core concepts. At one point, he writes the word "Break" on the screen, likely illustrating a pause in execution.

  2. 2:00 – 3:25 02:00-03:25

    The slide updates to provide formal definitions. "I/O Bound Processes" are defined as processes that spend more of their time doing I/O than computations. Conversely, "CPU Bound Processes" generate I/O requests infrequently, using more of their time doing computations. The instructor highlights the importance of the long-term scheduler selecting a good process mix. He explains that if all processes are I/O bound, the ready queue will almost always be empty, leaving the short-term scheduler with little to do. Similarly, if all processes are CPU bound, the I/O waiting queue will almost always be empty, devices will go unused, and the system will be unbalanced. Thus, the LTS needs to select a good combination of I/O and CPU bound processes for best system performance. A copyright banner for "Knowledge Gate Eduventures" is visible at the bottom.

The lecture effectively bridges the gap between theoretical process cycles and practical system scheduling. By defining the characteristics of CPU-bound and I/O-bound processes, the instructor sets the stage for understanding why a balanced mix is crucial. The key takeaway is that system performance relies heavily on the Long-Term Scheduler's ability to admit a diverse set of processes, preventing resource starvation in either the CPU or the I/O devices.

Loading lesson…