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Instruments (application): Xcode, Apple Inc., Mac OS X v10. 5, DTrace
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| Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. Instruments
(formerly Xray) is an application performance analyzer and visualizer,
integrated in Xcode 3.0. It is a developer tool included in Apple Mac OS
X v10.5, built on top of the DTrace tracing framework from OpenSolaris
and ported to Mac OS X. Instruments shows a time line displaying any
event occurring in the application, such as CPU activity variation,
memory allocation, and network and file activity, together with graphs
and statistics. Group of events are monitored via customizable
"instruments", which have the ability to record user generated events
and replay (emulate) them exactly as many times as needed, so a
developer can see the effect of code changes without actually doing the
repetitive work. The Instrument Builder feature allows the creation of
custom analysis instruments. |
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