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Understanding Software Dynamics - Richard Sites

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        Présentation Understanding Software Dynamics de Richard Sites Format Broché

         - Livre Informatique

        Livre Informatique - Richard Sites - 01/12/2021 - Broché - Langue : Anglais

        . .

      • Auteur(s) : Richard Sites
      • Editeur : Pearson Education
      • Langue : Anglais
      • Parution : 01/12/2021
      • Format : Moyen, de 350g à 1kg
      • Nombre de pages : 464
      • Expédition : 858
      • Dimensions : 23.1 x 17.4 x 2.5
      • ISBN : 9780137589739



      • Résumé :
        An Expert Guide to Software Performance Optimization

        From mobile and cloud apps to video games to driverless vehicle control, more and more software is time-constrained: It must deliver reliable results seamlessly, consistently, and virtually instantaneously. If it doesn't, customers are unhappy--and sometimes lives are put at risk. When complex software underperforms or fails, software engineers need to identify and address the root causes. This is difficult and, historically, few tools have been available to help.

        In Understanding Software Dynamics, performance expert Richard L. Sites tackles the problem head on, offering expert methods and advanced tools for understanding complex, time-constrained software dynamics, improving reliability and troubleshooting challenging performance problems.

        Sites draws on several decades of experience pioneering software performance optimization, as well as extensive experience teaching graduate-level developers. He introduces principles and techniques for use in any environment, from embedded devices to datacenters, illuminating them with examples based on x86 or ARM processors running Linux and linked by Ethernet. He also guides readers through building and applying a powerful, new, extremely low-overhead open-source software tool, KUtrace, to precisely trace executions on every CPU core. Using insights gleaned from this tool, readers can apply nuanced solutions--not merely brute-force techniques such as turning off caches or cores.

        • Measure and address issues associated with CPUs, memory, disk/SSD, networks, and their interactions
        • Fix programs that are always too slow, and those that sometimes lag for no apparent reason
        • Design useful observability, logging, and time-stamping capabilities into your code
        • Reason more effectively about performance data to see why reality differs from expectations
        • Identify problems such as excess execution, slow instruction execution, waiting for resources, and software locks
        Understanding Software Dynamics will be valuable to experienced software professionals, including application and OS developers, hardware and system architects, real-time system designers, and game developers, as well as advanced students.

        Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details....

        Biographie:
        Richard L. Sites wrote his first computer program in 1959 and has spent most of his career at the boundary between hardware and software, with a particular interest in CPU/software performance interactions. His past work includes VAX microcode, DEC Alpha co-architect, and inventing the performance counters found in nearly all processors today. He has done low-overhead microcode and software tracing at DEC, Adobe, Google, and Tesla. Dr. Sites earned his PhD at Stanford in 1974...

        Sommaire:
        Foreword xix
        Preface xxi
        Acknowledgments xxv
        About the Author xxvii


        Part I: Measurement 1
        Chapter 1: My Program Is Too Slow 3
        Chapter 2: Measuring CPUs 15
        Chapter 3: Measuring Memory 31
        Chapter 4: CPU and Memory Interaction 49
        Chapter 5: Measuring Disk/SSD 61
        Chapter 6: Measuring Networks 85
        Chapter 7: Disk and Network Database Interaction 111

        Part II: Observation 131
        Chapter 8: Logging 133
        Chapter 9: Aggregate Measures 141
        Chapter 10: Dashboards 157
        Chapter 11: Other Existing Tools 167
        Chapter 12: Traces 193
        Chapter 13: Observation Tool Design Principles 209

        Part III: Kernel-User Trace 217
        Chapter 14: KUtrace: Goals, Design, Implementation 219
        Chapter 15: KUtrace: Linux Kernel Patches 227
        Chapter 16: KUtrace: Linux Loadable Module 239
        Chapter 17: KUtrace: User-Mode Runtime Control 245
        Chapter 18: KUtrace: Postprocessing 249
        Chapter 19: KUtrace: Display of Software Dynamics 257

        Part IV: Reasoning 267
        Chapter 20: What to Look For 269
        Chapter 21: Executing Too Much 271
        Chapter 22: Executing Slowly 279
        Chapter 23: Waiting for CPU 289
        Chapter 24: Waiting for Memory 299
        Chapter 25: Waiting for Disk 307
        Chapter 26: Waiting for Network 319
        Chapter 27: Waiting for Locks 337
        Chapter 28: Waiting for Time 357
        Chapter 29: Waiting for Queues 361
        Chapter 30: Recap 383

        Appendix A: Sample Servers 387
        Appendix B: Trace Entries 391

        Glossary 397
        References 405
        Index 415
        ...

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