Button b1 = new Button(); b1.Content = "OK"; b1.Background = new SolidColorBrush(Colors.LightBlue); b1.Width = 100; OK LightBlue Dim b1 As New Button b1.Content = "OK" b1.Background = New SolidColorBrush(Colors.LightBlue) b1.Width = 100

Composition = Power

Measure, measure, measure Identify key scenarios and set clear goals Start measuring early on representative hardware Low hanging fruit Let measurements be your guide “Premature optimization is the root of all evil” Perceived performance Make it feel fast “An art, not a science” Trade-offs CPU versus memory, etc “To ship is to choose”

demo

Cold start Warm start Runtime Memory Image size Memory leaks Element count

demo

Cold start Warm start Runtime Memory Disk I/O Module loads NGen

demo

Cold start Warm start Runtime Memory Avoid blocking Delay work Perceived perf

demo

Cold start Warm start Runtime Memory Excessive *.* Beware of IRTs Eventing

Excessive *.* Beware of IRTs Eventing Avoid blocking Delay work Perceived perf Disk I/O Module loads NGen Image size Memory leaks Element count Composition + Measurement = Power Memory Cold start Warm start Runtime

Q & A

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