6/22/2023 0 Comments Improve windows startup time![]() Defines where to store JIT Enables Multicore JIT with the specified profile You simply need to use the following two lines of code in your app constructor to enable MultiCore JIT: When the application is executed for the second time, saved methods are compiled to native code in a separate process. MultiCore JIT logs methods used by your application and saves them to disk. You can use MultiCore JIT for this purpose (available for. MultiCore JITĪlternatively, you can optimize the translation of Microsoft Intermediate Language (MSIL) to machine code by translating most frequently used methods asynchronously at application startup. The image below illustrates startup benefits you can expect from Ngen.exe: 2. ![]() Nonethless, you still need to run Ngen.exe manually, because Native Image Task only works with assemblies located in GAC or Windows Store app package. NET Framework 4.5 applications when a computer is idle. Windows 8 (and newer versions of the Windows OS) include a Native Image Task that automatically generates native images for frequently used. For example, a user cancelled the UAC prompt. Run the process and save the executable’s hash: Var ngenPath = Path.Combine(dotNetRuntimePath, "ngen.exe") Īrguments = $"install \"\" /nologo", Var dotNetRuntimePath = RuntimeEnvironment.GetRuntimeDirectory() Var hash = string.Concat(SHA1.Create().ComputeHash(File.ReadAllBytes(assemblyLocation)) Cancel the operation if the application does not have changes: Var hashPath = Path.Combine(Environment.GetFolderPath(), "hash.txt") Create this file or load the saved hash if the file already exists: Specify a path to the file that stores your executable’s hash. Var assemblyLocation = Assembly.GetEntryAssembly().Location To only run Ngen.exe for the first startup, calculate a hash for your executable file and check this hash during subsequent startups: If you distribute your application as Click Once or an archive (and don’t have an installer), you can call Ngen.exe from code during application startup. You’ll need to execute the following line during the installation process and Ngen.exe will automatically process all assemblies associated with your project: C:\Windows\Microsoft.NET\Framework\v9\ngen.exe install C:\MyApp.exe The best way to run Ngen on a user’s machine is to incorporate Ngen.exe within your application installer. You can run it on your machine to test performance, but to optimize cold start for an end user, you need to use Ngen.exe on the user machine. It’s important to note that Ngen.exe should be used on the machine where your application will be used. You can use Ngen.exe to generate native image libraries that already contain native code. ![]() Translation from MSIL to machine code begins at startup - a process that may require significant time. This code needs to be translated to machine code before executing the application. NET Framework projects produce assemblies with Microsoft Intermediate Language (MSIL) code. NET Framework app (.NET/.NET Core projects don’t support Ngen). Native Image Generator (Ngen.exe) is the first tool you should consider when optimizing startup for a.
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