OProfile manual

OProfile是一款开源性能分析工具,适用于多种CPU架构。此工具能够收集硬件性能计数器数据,帮助开发者定位性能瓶颈。本文档详细介绍了OProfile的安装、配置及使用方法,并提供了丰富的示例和常见问题解决方案。

OProfile manual


Table of Contents

1. Introduction
1. Applications of OProfile 2. System requirements 3. Internet resources 4. Installation 5. Uninstalling OProfile
2. Overview
1. Getting started 2. Tools summary
3. Controlling the profiler
1. Using opcontrol
1.1. Examples 1.2. Specifying performance counter events
2. Using oprof_start 3. Configuration details
3.1. Hardware performance counters 3.2. OProfile in RTC mode 3.3. OProfile in timer interrupt mode 3.4. Pentium 4 support 3.5. Intel Itanium 2 support 3.6. PowerPC64 support 3.7. Dangerous counter settings
4. Obtaining results
1. Profile specifications
1.1. Examples 1.2. Profile specification parameters 1.3. Locating and managing binary images 1.4. What to do when you don't get any results
2. Image summaries and symbol summaries (opreport)
2.1. Merging separate profiles 2.2. Side-by-side multiple results 2.3. Callgraph output 2.4. Differential profiles with opreport 2.5. Anonymous executable mappings 2.6. Options for opreport
3. Outputting annotated source (opannotate)
3.1. Locating source files 3.2. Usage of opannotate
4. gprof-compatible output (opgprof)
4.1. Usage of opgprof
5. Archiving measurements (oparchive)
5.1. Usage of oparchive
6. Converting sample database files (opimport)
6.1. Usage of opimport
5. Interpreting profiling results
1. Profiling interrupt latency 2. Kernel profiling
2.1. Interrupt masking 2.2. Idle time 2.3. Profiling kernel modules
3. Interpreting call-graph profiles 4. Inaccuracies in annotated source
4.1. Side effects of optimizations 4.2. Prologues and epilogues 4.3. Inlined functions 4.4. Inaccuracy in line number information
5. Assembly functions 6. Other discrepancies
6. Acknowledgments
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