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Session 409 - Learning Instruments
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wwdcman
August 27, 2012
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Session 409 - Learning Instruments
wwdcman
August 27, 2012
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Transcript
These are confidential sessions—please refrain from streaming, blogging, or taking
pictures Profiling your App Session 409 Learning Instruments David M. O’Rourke Performance Tools Engineering Manager
What You’ll Learn Today
What You’ll Learn Today •Elements of performance
What You’ll Learn Today •Elements of performance •Methodology to improve
performance
What You’ll Learn Today •Elements of performance •Methodology to improve
performance •Instruments tour
What You’ll Learn Today •Elements of performance •Methodology to improve
performance •Instruments tour •iOS App optimization demonstrations
What Is Performance?
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"Crashes all the time" "Crashes all the time"
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Performance Is a Feature of Your App
Performance Is a Feature of Your App •Xcode to author/build
your app
Performance Is a Feature of Your App •Xcode to author/build
your app •Interface Builder to design your app
Performance Is a Feature of Your App •Xcode to author/build
your app •Interface Builder to design your app •Instruments to profile your app ▪ Optimize performance ▪ Reduces crashes and terminations ▪ Can improve power usage
Performance Profile Process
Debug Process
Debug Process Reproduce the problem
Debug Process Reproduce the problem Debug and inspect logs
Debug Process Reproduce the problem Form a hypothesis Debug and
inspect logs
Debug Process Reproduce the problem Form a hypothesis Make a
change Debug and inspect logs
Debug Process Reproduce the problem Form a hypothesis Make a
change Debug and inspect logs
Profile Process
Profile Process Reproduce the problem
Profile Process Reproduce the problem Profile with tools
Profile Process Form a hypothesis Reproduce the problem Profile with
tools
Profile Process Form a hypothesis Make a change Reproduce the
problem Profile with tools
Profile Process Form a hypothesis Make a change Reproduce the
problem Profile with tools
Where Can I Find Instruments?
Where Can I Find Instruments?
How Do I Access Instruments?
How Do I Access Instruments?
How Do I Access Instruments?
How Do I Access Instruments? •Pro Tip ▪ Right-click and
choose Keep in Dock
Instruments Tour
Document Model and Templates
Tour
Tour Toolbar
Tour Strategies
Tour Timeline
Tour Details
Tour Extended Details
Toolbar
Toolbar
Toolbar
Toolbar Target menu
Toolbar Target menu
Toolbar
Toolbar
Toolbar
Toolbar
Toolbar
Toolbar
Timeline Instrument strategy
Timeline Threads strategy
Timeline CPU strategy
Timeline and Filtering System Trace
Detail Pane Call Tree
Detail Pane Call Tree
Detail Pane Sample List
Detail Pane Source code
Detail Pane Source code
Detail Pane Disassembly
Detail Pane System Calls
Detail Pane Activity summary
Instruments
Demo Time Profiler example Joe Grzywacz Performance Tools Engineering
Use Call Tree
Use Call Tree
Use Thread Strategy
Use Thread Strategy
Use CPU Strategy
Demo Memory profiling example Victor Hernandez Performance Tools Engineering
Use Cycles and Roots
Use Allocations
Use Allocations
Closing Thoughts…
Profile Process
Profile Process Reproduce the problem
Profile Process Reproduce the problem Profile with tools
Profile Process Form a hypothesis Reproduce the problem Profile with
tools
Profile Process Form a hypothesis Make a change Reproduce the
problem Profile with tools
Profile Process Form a hypothesis Make a change Reproduce the
problem Profile with tools
Instruments Templates Used
Instruments Templates Used 3 Improvements 2 Improvements
Can Profile Virtually Anything
Can Profile Virtually Anything
"Fantastic and Fast" "Fantastic and Fast"
"Must buy this app" "Must buy this app"
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More Information Michael Jurewitz Developer Tools Evangelist
[email protected]
Instruments Documentation
Instruments User Guide (Xcode Documentation) Instruments New Features User Guide Apple Developer Forums http://devforums.apple.com
Related Sessions iOS App Performance: Responsiveness Presidio Thursday 11:30AM iOS
App Performance: Graphics and Animations Presidio Thursday 3:15PM iOS App Performance: Memory Presidio Thursday 4:30PM
Labs Xcode Lab Developer Tools Lab B Ongoing
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