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CS533 Concepts of Operating Systems Class 18

CS533 Concepts of Operating Systems Class 18. File Systems. Questions. What factors would influence the optimum block size for a file system? Why has disk workload become write-dominated? What would be the disk workload if memory was free? What “two” functions does the buffer-cache serve?.

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CS533 Concepts of Operating Systems Class 18

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  1. CS533 Concepts of Operating SystemsClass 18 File Systems

  2. Questions • What factors would influence the optimum block size for a file system? • Why has disk workload become write-dominated? • What would be the disk workload if memory was free? • What “two” functions does the buffer-cache serve? CS533 - Concepts of Operating Systems

  3. Questions • Why does read-optimized block placement perform very poorly for a write-dominated workload? • How should free space be managed for a read-dominated workload? • How should free space be managed for a write-dominated workload? CS533 - Concepts of Operating Systems

  4. Questions • What impact will the current rapid increase in disk capacity and decrease in cost per Mbyte have? • What if disk space was free? • With intelligent disk controllers should the file system manage placement at all? • What issues should concern a file system designer, beyond performance? CS533 - Concepts of Operating Systems

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