Systems performance analysis and tuning lead to a better end-user experience and lower costs, especially for cloud computing environments that charge by the OS instance. Systems Performance, 2nd Edition covers concepts, strategy, tools, and tuning for operating systems and applications, using Linux-based operating systems as the primary example.

World-renowned systems performance expert Brendan Gregg summarizes relevant operating system, hardware, and application theory to quickly get professionals up to speed even if they've never analyzed performance before, and to refresh and update advanced readers' knowledge. Gregg illuminates the latest tools and techniques, including extended BPF, showing how to get the most out of your systems in cloud, web, and large-scale enterprise environments. He covers these and other key topics:

• Hardware, kernel, and application internals, and how they perform
• Methodologies for rapid performance analysis of complex systems
• Optimizing CPU, memory, file system, disk, and networking usage
• Sophisticated profiling and tracing with perf, Ftrace, and BPF (BCC and bpftrace)
• Performance challenges associated with cloud computing hypervisors
• Benchmarking more effectively
  Fully updated for current Linux operating systems and environments, Systems Performance, 2nd Edition addresses issues that apply to any computer system. The book will be a go-to reference for many years to come and recommended reading at many tech companies, like its predecessor first edition.

Systems Performance, Second Edition, covers concepts, strategy, tools, and tuning for operating systems and applications, using Linux-based operating systems as the primary example. A deep understanding of these tools and techniques is critical for developers today. Implementing the strategies described in this thoroughly revised and updated edition can lead to a better end-user experience and lower costs, especially for cloud computing environments that charge by the OS instance.

Systems performance expert and best-selling author Brendan Gregg summarizes relevant operating system, hardware, and application theory to quickly get professionals up to speed even if they have never analyzed performance before. Gregg then provides in-depth explanations of the latest tools and techniques, including extended BPF, and shows how to get the most out of cloud, web, and large-scale enterprise systems. Key topics covered include

• Hardware, kernel, and application internals, and how they perform
• Methodologies for rapid performance analysis of complex systems
• Optimizing CPU, memory, file system, disk, and networking usage
• Sophisticated profiling and tracing with perf, Ftrace, and BPF (BCC and bpftrace)
• Performance challenges associated with cloud computing hypervisors
• Benchmarking more effectively Featuring up-to-date coverage of Linux operating systems and environments, Systems Performance, Second Edition, also addresses issues that apply to any computer system. The book will be a go-to reference for many years to come and, like the first edition, required reading at leading tech companies.

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

Autorentext
Brendan Gregg is an industry expert in computing performance and cloud computing. He is a senior performance architect at Netflix, where he does performance design, evaluation, analysis, and tuning. The author of multiple technical books including BPF Performance Tools and Systems Performance, he received the USENIX LISA Award for Outstanding Achievement in System Administration. He has also been a kernel engineer and performance lead, and was program co-chair for the USENIX LISA 2018 conference. He has created performance tools included in multiple operating systems, and visualizations and methodologies for performance analysis, including flame graphs.

Zusammenfassung
Systems Performance, Second Edition, covers concepts, strategy, tools, and tuning for operating systems and applications, using Linux-based operating systems as the primary example. A deep understanding of these tools and techniques is critical for developers today. Implementing the strategies described in this thoroughly revised and updated edition can lead to a better end-user experience and lower costs, especially for cloud computing environments that charge by the OS instance.

Systems performance expert and best-selling author Brendan Gregg summarizes relevant operating system, hardware, and application theory to quickly get professionals up to speed even if they have never analyzed performance before. Gregg then provides in-depth explanations of the latest tools and techniques, including extended BPF, and shows how to get the most out of cloud, web, and large-scale enterprise systems. Key topics covered include

• Hardware, kernel, and application internals, and how they perform
• Methodologies for rapid performance analysis of complex systems
• Optimizing CPU, memory, file system, disk, and networking usage
• Sophisticated profiling and tracing with perf, Ftrace, and BPF (BCC and bpftrace)
• Performance challenges associated with cloud computing hypervisors
• Benchmarking more effectivelyFeaturing up-to-date coverage of Linux operating systems and environments, Systems Performance, Second Edition, also addresses issues that apply to any computer system. The book will be a go-to reference for many years to come and, like the first edition, required reading at leading tech companies.
   
  Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

Inhalt
Preface xxix
Acknowledgments xxxv
About the Author xxxvii

Chapter 1: Introduction 1
1.1 Systems Performance 1
1.2 Roles 2
1.3 Activities 3
1.4 Perspectives 4
1.5 Performance Is Challenging 5
1.6 Latency 6
1.7 Observability 7
1.8 Experimentation 13
1.9 Cloud Computing 14
1.10 Methodologies 15
1.11 Case Studies 16
1.12 References 19

Chapter 2: Methodologies 21
2.1 Terminology 22
2.2 Models 23
2.3 Concepts 24
2.4 Perspectives 37
2.5 Methodology 40
2.6 Modeling 62
2.7 Capacity Planning 69
2.8 Statistics 73
2.9 Monitoring 77
2.10 Visualizations 79
2.11 Exercises 85
2.12 References 86

Chapter 3: Operating Systems 89
3.1 Terminology 90
3.2 Background 91
3.3 Kernels 111
3.4 Linux 114
3.5 Other Topics 122
3.6 Kernel Comparisons 124
3.7 Exercises 124
3.8 References 125

Chapter 4: Observability Tools 129
4.1 Tool Coverage 130
4.2 Tool Types 133
4.3 Observability Sources 138
4.4 sar 160
4.5 Tracing Tools 166
4.6 Observing Observability 167
4.7 Exercises 168
4.8 References 168

Chapter 5: Applications 171
5.1 Application Basics 172
5.2 Application Performance Techniques 176
5.3 Programming Languages 182
5.4 Methodology 186
5.5 Observability Tools 199
5.6 Gotchas 213
5.7 Exercises 216
5.8 References 217

Chapter 6: CPUs 219
6.1 Terminology 220
6.2 Models 221
6.3 Concepts 223
6.4 Architecture 229
6.5 Methodology 244
6.6 Observability Tools 254
6.7 Visualizations 288
6.8 Experimentation 293
6.9 Tuning 294
6.10 Exercises 299
6.11 References 300

Chapter 7: Memory 303
7.1 Terminology 304
7.2 Concepts 305
7.3 Architecture 311
7.4 Methodology 323
7.5 Observability Tools 328
7.6 Tuning 350
7.7 Exercises 354
7.8 References 355

Chapter 8: File Systems 359
8.1 Terminology 360
8.2 Models 361
8…