You can see that the DrawMandel method directly calls Bitmap.SetPixel. The Exclusive Samples % column represents samples collected in the body of the function only. Looking at the Call Tree view of the report, shown in Figure 3, the Inclusive Samples % column represents the samples collected in the function and its children. To learn more about the options for reporting, see the sidebar "Report Visualization Options."įigure 2** Performance Test Shows Expensive Function Calls **(Click the image for a larger view) The remaining 69 percent of the samples are scattered among different functions and not shown here. The summary page shows that Visual Studio Profiler collected 30.71 percent of the samples during execution of the DrawMandel method. The second list does not count the samples collected in child calls. For each function, the numbers represent the accumulated samples collected in both the body of the function and in all of its child calls. The first measures the work performed directly or indirectly by listed functions. The report shows these functions in two ways. When the analysis completes, Visual Studio Profiler displays the Performance Report Summary, which lists the most expensive functions (see Figure 2). Visual Studio automatically adds a newly created report to our performance session and starts analyzing it. To start profiling we click the Launch with Profiling button in the tool window toolbar.Īfter the application draws the fractal, we immediately close the form to stop profiling. The session contains the target application, Mandel in our case, and no reports. (See the "Performance Profiling Explained" sidebar for details on these profiling methods.) For now, we will pick the defaults.Īfter the wizard completes, a Performance Explorer dialog is displayed and a new performance session is created. The second step provides two different profiling methods: sampling and instrumentation. This launches a three-step wizard, where the first step lets us specify the target project or Web site. In Visual Studio 2005 this functionality is available from the Tools | Performance Tools menu. To start our investigation, we launch the Performance Wizard from the new Analyze menu in Visual Studio 2008. This application is not very efficient and it takes approximately 10 seconds to draw the fractal.įigure 1** Target Program for Performance Testing **(Click the image for a larger view) We will start with a small sample project that draws a Mandelbrot fractal as shown in Figure 1. #WIN32 APPLICATION WIZARD DOES NOT LAUNCH VISUAL STUDIO CODE#Please note that while we used C# to write the code samples in this article, most of the examples here are equally valid for native C/C++ and Visual Basic® code as well.įor our purpose, we'll use the profiler that comes with the two previously mentioned editions of Visual Studio. We'll introduce you to the Visual Studio Profiler by walking through a sample performance investigation. In this article, we will show you how you can use Visual Studio® Team System Development Edition or Visual Studio Team Suite to identify performance bottlenecks in your application. Throughout development, you should also measure different performance aspects of the application to find possible regression, and ensure that testers file and track bugs for slow scenarios.Įven with best planning, you may still have to investigate performance problems during product development. Early in planning, you should add requirements for responsiveness and create prototypes to identify possible technology restrictions. As Internet technologies like blogs have now enabled frustrated users to easily cast a negative light on your applications, you really need to make performance a primary priority. Each of these new technologies requires special knowledge to create great-performing applications. #WIN32 APPLICATION WIZARD DOES NOT LAUNCH VISUAL STUDIO SOFTWARE#The past decade has brought us many new software technologies and platforms. This article uses the following technologies: Hari Pulapaka and Boris Vidolov This article discusses: Find Application Bottlenecks with Visual Studio Profiler
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