Document Revision History
This table describes the changes to Performance Overview.
Removed obsolete references to Shark.
Updated the Apple developer information.
Updated the thread guidance to include Grand Central Dispatch.
Updated for OS X v10.5 and iOS.
Updated the advice about using Velocity Engine to reflect using the Accelerate framework, which supports multiple platform architectures.
New document that introduces the factors that determine performance.
Some information appeared previously in Performance Fundamentals and Finding Performance Problems.