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BPF Performance Tools - Brendan Gregg.pdf

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    Title Page
    Copyright Page
    Contents at a Glance
    Table of Contents
    Preface
    Why Do You Need BPF Performance Tools?
    About This Book
    How This Book Is Structured
    Intended Audience
    Source Code Copyright
    Supplemental Material and References
    Part I: Technologies
    Chapter 1. Introduction
    What are BPF and eBPF?
    What are Tracing, Snooping, Sampling, Profiling, and Observability?
    What are BCC, bpftrace, and IO Visor?
    A First Look at BCC: Quick Wins
    BPF Tracing Visibility
    Dynamic Instrumentation: kprobes and uprobes
    Static Instrumentation: Tracepoints and USDT
    A First Look at bpftrace: Tracing open()
    Back to BCC: Tracing open()
    Summary
    Chapter 2. Technology Background
    Illustrated
    BPF
    Extended BPF (eBPF)
    Stack Trace Walking
    Flame Graphs
    Event Sources
    Kprobes
    Uprobes
    Tracepoints
    USDT
    Dynamic USDT
    PMCs
    perf_events
    Summary
    Chapter 3. Performance Analysis
    Overview
    Performance Methodologies
    Linux 60-Second Analysis
    BCC Tool Checklist
    Summary
    Chapter 4. BCC
    BCC Components
    BCC Features
    BCC Installation
    BCC Tools
    funccount
    stackcount
    trace
    argdist
    Tool Documentation
    Developing BCC Tools
    BCC Internals
    BCC Debugging
    Summary
    Chapter 5. bpftrace
    bpftrace Components
    bpftrace Features
    bpftrace Installation
    bpftrace Tools
    bpftrace One-Liners
    bpftrace Documentation
    bpftrace Programming
    bpftrace Usage
    bpftrace Probe Types
    bpftrace Flow Control
    bpftrace Operators
    bpftrace Variables
    bpftrace Functions
    bpftrace Map Functions
    bpftrace Future Work
    bpftrace Internals
    bpftrace Debugging
    Summary
    Part II: Using BPF Tools
    Chapter 6. CPUs
    Background
    Traditional Tools
    BPF Tools
    BPF One-liners
    Optional Exercises
    Summary
    Chapter 7. Memory
    Background
    Traditional Tools
    BPF Tools
    BPF One-liners
    Optional Exercises
    Summary
    Chapter 8. File Systems
    Background
    Strategy
    Traditional Tools
    BPF Tools
    BPF One-liners
    BPF One-Liners Examples
    Optional Exercises
    Summary
    Chapter 9. Disk I/O
    Background
    Traditional Tools
    BPF Tools
    BPF One-liners
    BPF One-Liners Examples
    Optional Exercises
    Summary
    Chapter 10. Networking
    Background
    Traditional Tools
    BPF Tools
    BPF One-liners
    BPF One-Liners Examples
    Optional Exercises
    Summary
    Chapter 11. Security
    Background
    BPF Tools
    BPF One-Liners
    BPF One-Liners Examples
    Summary
    Chapter 12. Languages
    Background
    C
    Java
    Bash Shell
    Other Languages
    Summary
    Chapter 13. Applications
    Background
    BPF Tools
    BPF One-liners
    BPF One-Liners Examples
    Summary
    Chapter 14. Kernel
    Background
    Strategy
    Traditional Tools
    BPF Tools
    BPF One-Liners
    BPF One-Liners Examples
    Challenges
    Summary
    Chapter 15. Containers
    Background
    Traditional Tools
    BPF Tools
    BPF One-liners
    Optional Exercises
    Summary
    Chapter 16. Hypervisors
    Background
    Traditional Tools
    Guest BPF Tools
    Host BPF Tools
    Summary
    Part III: Additional Topics
    Chapter 17. Other BPF Performance Tools
    Vector and Performance Co-Pilot (PCP)
    Grafana and Performance Co-Pilot (PCP)
    Cloudflare eBPF Prometheus Exporter (with Grafana)
    kubectl-trace
    Other Tools
    Summary
    Chapter 18. Tips, Tricks, and Common Problems
    1. Typical Event Frequency and Overhead
    2. Sample at 49 or 99 Hertz
    3. Yellow Pigs and Grey Rats
    4. Write Target Software
    5. Learn Syscalls
    6. Keep it Simple
    7. Missing Events
    8. Missing Stacks Traces
    9. Missing Symbols (Function Names) When Printing
    10. Missing Functions When Tracing
    11. Feedback Loops
    12. Dropped Events
    Part IV: Appendixes
    A. bpftrace One-Liners [This content is currently in development.]
    B. bpftrace Cheat Sheet [This content is currently in development.]
    C. bcc Tool Development [This content is currently in development.]
    D. C BPF [This content is currently in development.]
    E. BPF Instructions [This content is currently in development.]
    Glossary
    Bibliography [This content is currently in development.]
    BPF Performance Tools Linux
System
and
Application Observability Brendan
Gregg
    Copyright
©
2020
Pearson
Education,
Inc.
    Contents at a Glance Preface Part
I:
Technologies Chapter
1.
Intro Chapter
2.
Technology
Background Chapter
3.
Performance
Analysis Chapter
4.
bcc Chapter
5.
bpftrace Part
II:
Using
BPF
Tools Chapter
6.
CPUs Chapter
7.
Memory Chapter
8.
File
Systems Chapter
9.
Disk
I/O Chapter
10.
Networking Chapter
11.
Security Chapter
12.
Languages Chapter
13.
Applications Chapter
14.
Kernel Chapter
15.
Containers Chapter
16.
Hypervisors Part
III:
Additional
Topics
    Chapter
17.
Other
BPF
Tools Chapter
18.
Tips
and
Tricks Part
IV:
Appendixes A.
bpftrace
One-Liners B.
bpftrace
Cheat
Sheet C.
bcc
Tool
Development D.
C
BPF E.
BPF
Instructions Glossary Bibliography
    Table of Contents Preface Why
Do
You
Need
BPF
Performance
Tools? About
This
Book How
This
Book
Is
Structured Intended
Audience Source
Code
Copyright Supplemental
Material
and
References Part
I:
Technologies Chapter
1.
Introduction What
are
BPF
and
eBPF? What
are
Tracing,
Snooping,
Sampling,
Profiling,
and Observability? What
are
BCC,
bpftrace,
and
IO
Visor? A
First
Look
at
BCC:
Quick
Wins BPF
Tracing
Visibility Dynamic
Instrumentation:
kprobes
and
uprobes
    Static
Instrumentation:
Tracepoints
and
USDT A
First
Look
at
bpftrace:
Tracing
open() Back
to
BCC:
Tracing
open() Summary Chapter
2.
Technology
Background Illustrated BPF Extended
BPF
(eBPF) Stack
Trace
Walking Flame
Graphs Event
Sources Kprobes Uprobes Tracepoints USDT Dynamic
USDT PMCs perf_events
    Summary Chapter
3.
Performance
Analysis Overview Performance
Methodologies Linux
60-Second
Analysis BCC
Tool
Checklist Summary Chapter
4.
BCC BCC
Components BCC
Features BCC
Installation BCC
Tools funccount stackcount trace argdist Tool
Documentation Developing
BCC
Tools
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