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Leopard Reference Library: Performance
The performance of Darwin applications can be measured, evaluated, and optimized using Apple's developer tools, technologies, and programming interfaces. Developers can fine-tune their applications for high performance using tools such as the Shark code-profiling application, features such as multiprocessing, and APIs such as the one for the vDSP library.
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Disabling Processor Cores on a Multi-Core System (HTML) (日本語 HTML)
QA1141: Describes how to disable processor cores on a multi-core system for testing purposes.
 Technical Q&As 2008-09-16
64-Bit Transition Guide (HTML) (PDF)
Describes the 64-bit features available in Mac OS X.
 Guides 2008-04-08
Affinity API Release Notes for Mac OS X v10.5 (HTML)
Explains how to influence which CPU core runs a group of threads (for performance optimization).
 Release Notes 2007-10-31
Xgrid Foundation Reference Update (HTML) (PDF)
Summarizes the symbols added to the Xgrid Foundation framework.
 Release Notes 2007-07-18
Tiger Developer Overview Series: Developing 64-bit Applications (HTML)
Learn how Mac OS X Tiger breaks the limitations of 32-bit computing.
 Articles 2004-12-20
MapLargeFile (HTML) (DMG) (ZIP)
Shows a technique for mapping files greater than 4GB into memory for faster access.
 Sample Code 2003-11-19
Setting environment variables for user processes (HTML)
QA1067: Tells how to set environment variables for user processes.
 Technical Q&As 2001-10-25
GDB for MacsBug Veterans (HTML)
TN2030: Translate your experience with MacsBug into a working knowledge of the GNU source-level debugger (GDB).
 Technical Notes 2001-10-18