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Xcode® 4 Unleashed, Second Edition by Frederic F. Anderson

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Chapter 27. Instruments

In This Chapter

• Using Instruments: performance and resources in time

• Configuring instruments

• Understanding Apple’s templates and instruments

• Creating custom templates and instruments

Instruments is a framework for software-measurement tools called...instruments. (Uppercase-I Instruments is the application, lowercase-i instruments are components of the Instruments application.) The analogy is to a multitrack recording deck. Instruments records activity into tracks (one per instrument), building the data on a timeline like audio on a tape.

You’ve seen Instruments before, in Chapter 14, “Measurement and Analysis,” where it helped you track down some memory and performance bugs in the Passer Rating iPhone app. It ...

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