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Oracle Solaris Studio 12.2: Performance Analyzer |
1. Overview of the Performance Analyzer
3. Collecting Performance Data
4. The Performance Analyzer Tool
5. The er_print Command Line Performance Analysis Tool
dbx Experiments That Create a Process
dbx Experiments on a Running Process
Interpreting Performance Metrics
Hardware Counter Overflow Profiling
Call Stacks and Program Execution
Single-Threaded Execution and Function Calls
Function Calls Between Shared Objects
Overview of Java Technology-Based Software Execution
Java Call Stacks and Machine Call Stacks
Clock-based Profiling and Hardware Counter Overflow Profiling
Java Processing Representations
The Expert-User Representation
Overview of OpenMP Software Execution
User Mode View of OpenMP Profile Data
Expert View Mode of OpenMP Profiling Data
Machine View Mode of OpenMP Profiling Data
Mapping Addresses to Program Structure
Static Functions From Stripped Shared Libraries
Fortran Alternate Entry Points
Compiler-Generated Body Functions
Dynamically Compiled Functions
The <no Java callstack recorded> Function
The <Truncated-stack> Function
Functions Related to Hardware Counter Overflow Profiling
Mapping Performance Data to Index Objects
Mapping Data Addresses to Program Data Objects
The <Unknown> Data Object and Its Elements
Mapping Performance Data to Memory Objects
The Performance Analyzer reads the event data that is collected by the Collector and converts it into performance metrics. The metrics are computed for various elements in the structure of the target program, such as instructions, source lines, functions, and load objects. In addition to a header containing a timestamp, thread id, LWP id, and CPU id, the data recorded for each event collected has two parts:
Some event-specific data that is used to compute metrics
A call stack of the application that is used to associate those metrics with the program structure
The process of associating the metrics with the program structure is not always straightforward, due to the insertions, transformations, and optimizations made by the compiler. This chapter describes the process and discusses the effect on what you see in the Performance Analyzer displays.
This chapter covers the following topics:
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