12.10. CHUD Tools

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12.9. Performance Tools and Debugging Tools

The developer tools that ship with Tiger include an impressive array of debugging and tuning tools. These tools are extensively documented at /Developer/ADC Reference Library/documentation/Performance/Conceptual/PerformanceOverview/index.html. This site includes a more complete list of tools and offers examples to demonstrate the use of these tools. The following short list is intended to give you an idea of what is available.


gdb

The GNU debugger.


MallocDebug

Analyzes memory usage.


ObjectAlloc

Analyzes both memory allocation and deallocation.


heap

Analyzes memory usage.


leaks

Lists the addresses and sizes of unreferenced malloc buffers.


malloc_history

Lists the malloc allocation history of a given process.


vm_stat

Lists virtual memory statistics.


vmmap

Displays a virtual memory map in a process, including the attributes of memory regions such as starting addresses, sizes, and permissions.


OpenGL Profiler

Profiles OpenGL-based applications.


QuartzDebug

A debugging tool related to the Quartz graphics system.


Sampler

Performs a statistical analysis of where an application spends its time by providing information such as how often allocation routines, system calls, or other functions are called.


Shark

Provides instruction-level profiling of execution time of a program, using statistical sampling. Advice on optimization is also provided. (A command-line version, /usr/bin/shark, is also provided.)


Spin Control

Monitors programs that become unresponsive and cause the spinning curser.


Activity Monitor

GUI application, located in /Applications/Utilities, that displays information on memory and CPU usage for running processes. This application is similar to the command line utility, top, which is also included with Tiger.


BigTop

GUI application, similar to both top and vm_stat, that displays information on memory, CPU, network, and disk usage for running processes.


Thread Viewer

Profiles individual threads in multithreaded applications.


gprof

Profiles execution of programs by reporting information such as execution times, and the number of calls for individual functions.


fs_usage

Displays information on filesystem activity.


sc_usage

Displays information on system calls and page faults.


otool

A command-line utility used to display information associated with object files or libraries. Earlier, we used it with the -L option, which displays the names and version numbers of the shared libraries used by the given object file. For more details see the otool manpage.


top

Reports dynamically updated statistics on memory and CPU usage for running processes.


c2ph

Displays information on C-structures in object files.


kdump

Displays kernel race data.


atos

Converts to and from symbol names and numeric address of symbols in running programs.


mn

Displays symbol table for object files.


pagestuff

Displays information about the logical pages of a Mach-O executable file.


pstruct

Same as c2ph.


sample

A command-line tool used to profile a process over a time interval.

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    Mac OS X Tiger for Unix Geeks
    Mac OS X Tiger for Unix Geeks
    ISBN: 0596009127
    EAN: 2147483647
    Year: 2006
    Pages: 176

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