Capacity Planning

Academic Year 2017/18

Prof. Bruno Ciciani,

Tutors: Ing. Romolo Marotta & Stefano Conoci

1. Dependable systems

   • Introduction to dependable systems

     • Dependability attributes

     • Dependable applications

     • Impairments to dependability

   • Fault tolerant techniques

     • Basic concepts and techniques

     • Hardware redundancy

     • Time redundancy

     • Software redundancy

     • Information redundancy

     • Fault tolerance in distributed systems

2. Capacity Planning

   • Workload characterization

   • Dependability and Performance evaluation techniques

   • Benchmarks

   • Web and Intranet Performance Issues

3. Dependability modelling and evaluation methodologies

   • Dependability modelling; definitions and hypothesis

   • Combinatorial methods

   • Markovian processes

   • Examples of reliability, availability and safety evaluation

4. Performance evaluation techniques

   • Basic performance concepts

   • System-level performance model

   • Component-level performance level

5. Examples of system performance modelling and evaluation

   • Web systems

     • Peculiarity of Web traffic

• Power law

• Burstly workload

• Client side models

• No cache proxy server case

• Cache proxy server case

• Server side models

• Single Web server

• Mirrored Web server

• Content distribution networks

  • Architectures and solutions

  • Document popularity

• Document popularity probability distribution

• Evaluation of hit popularity

• Performance evaluation

• Data base systems

  • Centralized

• Modeling and evaluation of DB with pessimistic concurrency control

• Modeling and evaluation of DB with optimistic concurrency control

• Distributed

• Modeling and evaluation of DB with pessimistic concurrency control

• Modeling and evaluation of DB with optimistic concurrency control

• Cloud computing systems

  • Identification of the best provider